Article Per Year (5 Year)
p-Index From 2019 - 2024
2.096
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Jurnal Ilmu Lingkungan Jurnal Keteknikan Pertanian JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) SAINS TANAH - Journal of Soil Science and Agroclimatology Seminar Nasional Lahan Suboptimal Jurnal Tanah dan Iklim JURNAL HUTAN TROPIS Jurnal Penelitian Kehutanan Wallacea
Latief Mahir Rachman
Departemen Ilmu Tanah Dan Pengelolaan Sumberdaya Lahan, Fakultas Pertanian, IPB
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Environmental Science Other

Published : 18 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 18 Documents
Search

 1   2 
Karakteristik dan Variabilitas Sifat-Sifat Fisik Tanah dan Evaluasi Kualitas Fisik Tanah pada Lahan Suboptimal Rachman, Latief Mahir
Seminar Nasional Lahan Suboptimal 2019: Prosiding Seminar Nasional Lahan Suboptimal “Smart Farming yang Berwawasan Lingkungan untuk
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.87 KB)

Abstract

Rachman, LM. 2019. Characteristic and variability of soil physical properties and evaluation of soil physical evaluation in suboptimal land. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal 2019, Palembang 4-5 September 2019. Pp. 132-139. Palembang: Unsri Press. Self-reliance of food depends on how to optimizing dry land farming, especially enhancing productivity of soils in suboptimal lands. It needs strong direction and recommendation of soil management. Nowadays, soils on suboptimal lands encountered soil chemical, biological and physical problems to support optimal plant growth and production. Problems that are often arising are soil acidity, low availability of soil nutrients, low carbon organic content and low soil ability to serve available water for plant. The excellence fertilization technology is believed to be able to overcome the chemical aspects problems such as low of soil pH, soil nutrients and carbon organic content. However, problems related to soil physical properties are more difficult to be solved and need a longer period process for recovering, amendment and improvement. Correspondingly, a deep research needs to study the characteristics and variability of soil physical properties and soil physical quality of suboptimal lands. The purpose of study was to assess the characteristics and variability of soil physical properties and to evaluate soil physical quality on suboptimal lands. Soil physical properties that affecting soil physical quality analyzed is directed to aspects related to root development in soil, available water supply, and soil aeration, particularly soil depth, drainage, texture, bulk density or soil compaction, porosity, and soil pore distribution that controls the ability of soil to hold water, supply available water, release water and pull water very strong. Results of study conducted in 60 locations of suboptimal land, spread in 3 regencies and 2 cities in Banten Province and 6 regencies in West Java Province, showed that majority of their soil physical quality belong to moderate class. In fact, almost all of the soil physical properties that were studied did not show severe handicap for plant growth and production.Keywords: soil physical evaluation, soil physical properties, soil quality evaluation, suboptimal land
KAJIAN DAMPAK PERUBAHAN PENGGUNAAN LAHAN TERHADAP DEBIT ALIRAN DAS CIUJUNG Sulaeman, Dede; Hidayat, Yayat; Rachman, Latief Mahir; Tarigan, Suria Darma
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.907 KB)

Abstract

Ciujung Watershed is considered as one of major watershed in Banten Province related to floods that take place almost every year in the area. The study aims to assess landuse change and its influence on discharge. Watershed conditions such as precipitation, discharge, peak discharge, volume rate of discharge, and runoff were analyzed in two periods: 1999-2003 and 2004-2011. Landuse changes were analyzed in 8 years period (2003-2011) as well as its influence on discharge. Average annual precipitation in the period of 1999-2003 and 2004-2011 are 2370 and 2419 mm respectively. Average annual discharge in the period of 2004-2011 increased by 15% compared to the period of 1999-2003. Watershed conditions analysis indicates that Ciujung watershed quality decreased with increasing in surface runoff coefficient with values of 0.43 (period 1999-2003) and 0.48 (period 2004-2011). The study showed that there are several decreasing landuses during period 2003-2011 such as open land, natural forest, mixed dry land farming, secondary dry forest, primary dry forest, and dry land farming by 47.4; 14.3; 8.4; 2.9; 1.6 and 0.1% respectively. Several increasing land uses during the period including bush, plantations, settlements, and paddy field by 1,974.5; 5.5; 3.8 and 0.9% respectively. Keywords: discharge, land use change, peak discharge, runoff Ciujung Watershed is considered as one of major watershed in Banten Province related to floods that take place almost every year in the area. The study aims to assess landuse change and its influence on discharge. Watershed conditions such as precipitation, discharge, peak discharge, volume rate of discharge, and runoff were analyzed in two periods: 1999-2003 and 2004-2011. Landuse changes were analyzed in 8 years period (2003-2011) as well as its influence on discharge. Average annual precipitation in the period of 1999-2003 and 2004-2011 are 2370 and 2419 mm respectively. Average annual discharge in the period of 2004-2011 increased by 15% compared to the period of 1999-2003. Watershed conditions analysis indicates that Ciujung watershed quality decreased with increasing in surface runoff coefficient with values of 0.43 (period 1999-2003) and 0.48 (period 2004-2011). The study showed that there are several decreasing landuses during period 2003-2011 such as open land, natural forest, mixed dry land farming, secondary dry forest, primary dry forest, and dry land farming by 47.4; 14.3; 8.4; 2.9; 1.6 and 0.1% respectively. Several increasing land uses during the period including bush, plantations, settlements, and paddy field by 1,974.5; 5.5; 3.8 and 0.9% respectively. Keywords: discharge, land use change, peak discharge, runoff
Analysis of Soil Physics Quality Index in Terms of Soybean Crop Productivity Putri, Savitri Khairunnisa; Baskoro, Dwi Putro Tejo; Rachman, Latief Mahir
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 45, No 2 (2021)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v45n2.2021.163-173

Abstract

Abstrak. Sifat fisika tanah merupakan salah satu sifat tanah yang menentukan kualitas suatu tanah serta salah satu penentu kesuburan tanah, serta berperan dalam pertumbuhan dan produksi tanaman, sehingga perlu ditentukan indeks kualitas fisika tanah. Penelitian ini bertujuan untuk mengetahui indeks kualitas fisika tanah (IKFT) pada tanaman kedelai berdasarkan perlakuan yang diberikan dan untuk mengetahui hubungan indeks kualitas fisik tanah dengan produktivitas kedelai. Lokasi penelitian ini berada di Kebun Percobaan Pacet, Kabupaten Cianjur, Provinsi Jawa Barat. Sifat fisik tanah yang digunakan untuk menentukan IKFT adalah tekstur, bulk density, porositas, pori drainase, air tersedia, permeabilitas, dan stabilitas agregat. Setiap parameter fisika tanah menggunakan skor dalam rentang 0 sampai 5. Penetapan IKFT pada lahan dapat menunjukkan berbagai kualitas sifat fisika tanah yang diwakili oleh beberapa sifat fisika tanah. Indeks kualitas fisika tanah (IKFT) pada masing-masing unit yang ditanami kedelai, yaitu berkisar antara 0,74-0,91 dengan kategori agak baik (P10) sebagai kontrol, baik (P1-P7 dan P9), dan sangat baik (P8). Indeks kualitas fisika tanah memiliki hubungan linier positif sedang antara IKFT dengan produktivitas kedelai (R = 0,4223) yang berarti semakin tinggi indeks kualitas fisika tanah maka produktivitas kedelai semakin tinggi.Kata kunci: sifat fisika tanah, indeks kualitas fisika tanah, tanaman kedelai Abstract.  Soil physical properties are one of the soil properties that determine the quality of a soil as well as one of the determinants of soil fertility, as well as contributing to plant growth and production, so it is necessary to determine the physical quality index of the soil. This study aims to determine the soil physical quality index (SPQI) in soybean plants based on the treatment given and to determine the relationship between soil physical quality index and soybean productivity. This research location was at the Pacet Experimental Garden, Cianjur Regency, West Java Province. The physical properties of the soil used to determine the SPQI are texture, bulk density, porosity, drainage pores, available water, permeability, and aggregate stability. Each soil physics parameter uses a score in the range of 0 to 5. Determination of SPQI on land can show various qualities of soil physical properties which are represented by several soil physical properties. The soil physical quality index (SPQI) of each unit planted with soybeans, which ranged from 0.74-0.91 with categories slightly good (P10) as a control, good (P1-P7 and P9), and very good (P8). Soil physical quality index has a moderate positive linear relationship between SPQI and soybean productivity (R = 0.4223) which means that the higher the soil physical quality index, the higher the soybean productivity.Key word: soil physical properties, soil physical quality index, soybean plant
Analisis Daya Dukung Lahan Pertanian Tanaman Pangan Daerah Aliran Sungai Cibaliung, Provinsi Banten Nurlaila Mubarokah; Latief Mahir Rachman; Suria Darma Tarigan
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 1 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (702.585 KB) | DOI: 10.18343/jipi.25.1.73

Abstract

Analysis of carrying capacity of agricultural land for food crops is very important to do to determine the extent of the ability of agricultural land in supporting the fulfillment of the food needs of the population in an area. One problem in the Cibaliung watershed is the low ability of land to meet food needs so that residents cannot meet their needs independently. This study aims to determine the level of carrying capacity of agricultural food crops in meeting the food needs of the community in the Cibaliung River Basin (DAS) of Banten Province. Spatially, this study covered 2 regencies consisting of 15 districts within the scope of the Cibaliung watershed. The data used were secondary data taken from the Central Statistics Agency and the Agriculture and Animal Husbandry Office of Pandeglang and Lebak Regencies. The results showed that overall based on 4-year data (for the period of 2013‒2016) the carrying capacity of the Cibaliung watershed agricultural land as a whole was still low. In addition, the optimal number of populations that is able to be supported by the available food needs is still smaller than the total population recorded in each district in the Cibaliung watershed. This shows that the Cibaliung watershed area has not been able to be self-sufficient in food and has not been able to provide a decent life for its residents. Therefore, certain efforts need to be made to increase the carrying capacity of food agricultural land in this area, for example by suppressing the population and improving the quality of agricultural land resources through efforts to conserve agriculture and diversify food crop species. Keywords: agricultural land, carrying capacity, Cibaliung watershed
Penetapan Alokasi Sawah Penerima Air Irigasi Berdasarkan Kondisi Hidroklimatologi di Daerah Irigasi Cihea Nur Etika Karyati; Latief Mahir Rachman; Dwi Putro Tejo Baskoro
Jurnal Ilmu Pertanian Indonesia Vol. 27 No. 2 (2022): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.27.2.216

Abstract

One of the main supporting factors for the agricultural sector in the Cihea Irrigation Area is the availability of sufficient water resources. However, uncertain climatic conditions due to climate change lead the changes in the rain distribution and affect the availability of water resources. The study aims to (1) assess the land water balance and drought index in Cihea Irrigation Area and (2) develop alternatives related to irrigation priority locations based on hydro climatological conditions. The water balance was analyzed using the Thornthwaite-Mather method (1957), while the irrigation priority locations were determined using the composite performance index method. Based on the annual water balance analysis, this irrigation area had a 568 mm/year water surplus. However, there was a water shortage from July to October, at 132 mm per month. From ten land systems,the highest deficit was in SL_9, while the lowest was in SL_1. These conditions triggered drought in some locations. The highest drought index occurred in August (56,89%), while the lowest occurred in July (3.98%). Based on hidroclimatological ,the prioritised locations for escalated productivity are paddy fields in CDK.16 Ka, CDK.17 Ki, PD.1 Ka, PD.1 Ki, PD.2 Ka, PD.2 Ki, CRJ.6 Ki, CRJ.7 Ki, CRJ.8 Ki, CRJ.9 Ki, CRJ.10 Ki, and CKR.1 Ki in the Ciranjang subdistrict. Meanwhile, to gain the equal irrigation distribution, the priority locations consist of paddy fields in CSK.1 Ki to CSK.5 ki, CSK.6 Ki, CSK.6 Ka, CSK.7 Ki to CSK.9 Ki, CSK.10 Ki, and CSK.10 Ka, situated in Bocongpicung District. Keywords: drought index, irrigation priority, water balance
Best Management Practice untuk Menurunkan Debit Aliran dan Hasil Sedimen DAS Ciujung Menggunakan Model SWAT: Best Management Practice to Reduce Flow Discharge and Sediment Yield in Ciujung Watershed Using SWAT Model Dede Sulaeman; Yayat Hidayat; Latief Mahir Rachman; Suria Darma Tarigan
Jurnal Ilmu Tanah dan Lingkungan Vol 18 No 1 (2016): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.996 KB) | DOI: 10.29244/jitl.18.1.8-14

Abstract

Ciujung Watershed is the biggest and considered one of the major watersheds in Banten Province related to floods that take place almost every year in the area. The study aimed to review the SWAT (Soil and Water Assessment Tool) Model performance in predicting flow discharge and sediment yield to determine the best management practice to reduce those parameters in Ciujung Watershed. There were some steps in running SWAT model, including: (1) delineate watershed; (2) create Hydrology Response Unit (HRU); (3) HRU definition; (4) climate data input; (5) write SWAT input files; (6) run SWAT model; (7) calibration and validation; and (8) hydrological parameters simulation. The study showed that the model had a good performance in predicting flow discharge with R2 and NSE values in the calibration process of 0.83 and 0.65 respectively. Meanwhile, the model resulted in not a satisfying performance in predicting sediment yield with R2 value of 0.55 and NSE value of -193.62. The validation process in predicting flow discharge produced R2 and NSE values of 0.78 and 0.63 respectively. Land management practices used in this study are reforestation, land degradation rehabilitation, soil and water conservation practice with vegetative and mechanical methods, and all land management practice implementation. The last scenario is the best management practice that can be implemented in Ciujung watershed to maintain watershed conditions. The scenario produced the best river regime coefficient by 65 (moderate), reduced direct runoff and sediment yield by 46% and 95% respectively, and increased lateral and return flow by 32% and 80% respectively. Keywords: Best management practice, flow discharge, hydrological parameters, sediment yield, SWAT model
Alternatif Teknik Konservasi Tanah dan Air untuk DAS Cilemer, Banten: Alternative of Soil and Water Conservation Techniques in Cilemer Watershed, Banten Evi Nursari; Latief Mahir Rachman; Dwi Putro Tejo Baskoro
Jurnal Ilmu Tanah dan Lingkungan Vol 20 No 1 (2018): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.815 KB) | DOI: 10.29244/jitl.20.1.33-39

Abstract

Banjir dan kekeringan merupakan persoalan rutin yang terjadi di Daerah Aliran Sungai (DAS) Cilemer karena kualitasnya menurun. Penerapan Konservasi Tanah dan Air (KTA) merupakan salah satu upaya untuk meningkatkan kualitas DAS Cilemer. Studi ini bertujuan untuk mensimulasikan beberapa teknik KTA, mendapatkan alternatif teknologi KTA, dan menyusun arahan pengelolaan DAS yang baik. Penelitian dilaksanakan kedalam beberapa tahap yaitu: (i) pengumpulan data sekunder, (ii) survei lapang (pengumpulan data primer), (iii) analisis data, (iv) running model SWAT, (v) simulasi KTA dengan model SWAT, (vi) skenario pengelolaan DAS, serta (vii) penyusunan arahan pengelolaan DAS. Hasil penelitian menunjukkan bahwa penerapan KTA dapat memperbaiki kualitas DAS yang ditandai dengan menurunnya rasio Qmax/Qmin dan aliran permukaan langsung serta meningkatnya aliran dasar dan water yield. Strip cropping, agroforestry dan embung dapat dijadikan alternatif teknologi KTA yang dapat diimplementasikan secara simultan di DAS Cilemer pada sub agroekosistem dimana teknologi tersebut sesuai untuk diterapkan. Embung adalah skenario pengelolaan DAS terbaik, yang mampu menurunkan aliran permukaan langsung sebesar 29.24%, koefisien aliran tahunan menurun dari 0.25 menjadi 0.17, meningkatkan aliran dasar sebesar 46.00% dan hasil air sebesar 3.99%.
Evaluasi Kinerja Daerah Irigasi Cikeusik Berdasarkan Petunjuk Pelaksanaan Gabungan Penilaian Kinerja Irigasi Kementerian Pekerjaan Umum dan Perumahan Rakyat (PUPR) Tahun 2017: Performance Evaluation Cikeusik Irrigation Area Based on Combined Instructions for Assessment of Irrigation Performance of the Ministry of Public and Household Housing (PUPR) in 2017 Kiki Rishki Ananda; Latief Mahir Rachman; Suria Darma Tarigan
Jurnal Ilmu Tanah dan Lingkungan Vol 21 No 1 (2019): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (318.541 KB) | DOI: 10.29244/jitl.21.1.1-6

Abstract

Daerah irigasi (D.I.) Cikeusik dibangun pada tahun 1883 dan mulai beroperasi pada tahun 1884, namun saat ini sudah tidak beroperasi secara optimum. D.I. Cikeusik terletak di Kecamatan Cikeusik, Kabupaten Pandeglang, Provinsi Banten. Sektor pertanian yang terdapat di daerah tersebut memiliki potensi yang sangat baik. Kecamatan Cikeusik mempunyai lahan pertanian seluas 650 ha. Jaringan irigasi di D.I. Cikeusik mencakup jaringan irigasi teknis yang memiliki sembilan buah pintu sadap. Saat ini irigasi Cikeusik mengalami perubahan dalam pemasokan air ke petak tersier, air yang dipasok tidak tercukupi. Penelitian ini bertujuan untuk mengevaluasi kinerja D.I. Cikeusik. Metode yang digunakan dalam penelitian ini adalah menggunakan petunjuk pelaksanaan gabungan penilaian kinerja sistem irigasi utama dan tersier kementerian PUPR 2017. Hasil penelitian menunjukkan bahwa Nilai Kinerja Sistem Irigasi (NKSI) sebesar 64.86% termasuk kategori kinerja irigasi masih kurang.
Analisis Kinerja DAS Pedindang Pasca Tambang Timah Kabupaten Bangka Tengah Provinsi Bangka Belitung: Analysis of Pedindang Bassin Performance Post Tin Minning in Central Bangka Regency, Bangka Belitung Province Hendi Hendra Bayu; Dwi Putro Tejo Baskoro; Latief Mahir Rachman
Jurnal Ilmu Tanah dan Lingkungan Vol 21 No 2 (2019): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.438 KB) | DOI: 10.29244/jitl.21.2.72-77

Abstract

Aktifitas kegitan manusia di dalam DAS Pedindang secara langsung mempengaruhi keadaan fisik lahan, kualitas air, dan kinerja DAS Pedindang. Aktifitas kegiatan penambangan merupakan salah satu faktor yang mengakibatkan kerusakan tanah, menurunnya kualitas air dan meningkatnya aliran permukaan. Tujuan penelitian ini adalah: i) menganalisis kualitas air di DAS Pedindang pada daerah hulu dan daerah lain yang mengalami pencemaran; ii) menganalisis tingkat kerusakan tanah yang berada di DAS Pedindang pasca penambangan timah; iii) mengevaluasi kinerja DAS Pedindang dengan pendekatan Koefisien Regim Aliran (KRA) dan Koefisien Aliran Tahunan (KAT). Penelitian ini menggunakan metode analisis tumpangtindih GIS serta penilaian ambang batas kerusakan tanah, penilaian ambang batas kualitas air dan kinerja DAS dengan penilaian KRA dan KAT. Hasil evaluasi DAS Pedindang menunjukkan bahwa kondisi kualitas air dalam DAS pedindang mengalami penurunan di wilayah hilir akibat aktifitas tambang, sehingga perlu adanya penanganan tanah tambang.
Proyeksi Konservasi Tanah dan Air Mitigasi Penurunan Jasa Lingkungan Tata Hidrologi DAS Hulu Brantas Raushanfikr Bushron; Latief Mahir Rachman; Dwi Pujo Tejo Baskoro; Soemarno Soemarno
Jurnal Ilmu Lingkungan Vol 20, No 3 (2022): July 2022
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.20.3.474-483

Abstract

Jasa lingkungan pengaturan hidrologi DAS berupa Koefisien Rezim Aliran (KRA) dan Koefisien Aliran tahunan (KAT)mengalami penurunan kualitas akibat perubahan penggunaan lahan. Upaya konservasi tanah dan air memiliki peranan penting dalam memperbaiki jasa lingkungan DAS, sehingga untuk melakukan upaya mitigasi dampak perubahan penggunaan lahan di masa yang akan dating, perlu dilakukan proyeksi arahan teknik konservasi tanah dan air. Penelitian ini memiliki 3 skenario yaitu 1). Skenario A (eksisting tahun 2019), 2) Skenario B (Proyeksi Penggunaan lahan tahun 2029), 3) Skenario C (penerapan KTA Proyeksi Penggunaan lahan 2029). Analisis pada penelitian ini menggunakan 2 analisis yaitu; 1) CA-Markov untuk menentukan proyeksi penggunaan lahan 2) Soil and Water Assessment Tool untuk menentukan nilai KRA dan KAT. Hasil yang didapatkan dari analisis proyeksi CA-Makov didapatkan bahwa penggunaan lahan ditahun 2029 mengalami peningkatan terbesar pada penggunaan lahan permukiman yaitu sebesar 4100 Ha, sedangkan penggunaan lahan vegetatif berupa lahan pertanian dan hutan mengalami penurunan sebesar 4785 Ha. Nilai KRA skenario B diseluruh sub-DAS lebih tinggi dibandingkan pada skenario A, hal ini menunjukkan bahwa terjadi penurunan fungsi hidrologi DAS pada proyeksi tahun 2029 dibanding pada tahun 2019. Nilai KRA pada skenario C lebih rendah di seluruh sub-DAS dibandingkan dengan skenario B, bahkan di sebagian sub-DAS nilai KRA skenario C lebih rendah dari skenario A. hal tersebut menunjukkan arahan KTA dapat memperbaiki nilai KRA akibar penggunaan lahan proyeksi 2029, bahkan nilai KRA nya dapat lebih baik dari penggunaan lahan eksisting tahun 2029. Nilai KRA pada skenario C lebih rendah di seluruh sub-DAS dibandingkan dengan skenario B, bahkan di sebagian sub-DAS nilai KRA skenario C lebih rendah dari skenario A. hal tersebut menunjukkan arahan KTA dapat memperbaiki nilai KRA akibar penggunaan lahan proyeksi 2029, bahkan nilai KRA nya dapat lebih baik dari penggunaan lahan eksisting tahun 2029.ABSTRACTWatershed hydrological regulation environmental services in the form of Flow Regime Coefficient (KRA) and Annual Flow Coefficient (KAT) have decreased in quality due to changes in land use. Soil and water conservation efforts have an important role in improving watershed environmental services, so that in order to mitigate the impacts of future land use changes, it is necessary to project directions for soil and water conservation techniques. This study has 3 scenarios, namely 1). Scenario A (existing in 2019), 2) Scenario B (Land Use Projection in 2029), 3) Scenario C (implementation of KTA Land Use Projection in 2029). The analysis in this study uses 2 analyzes, namely; 1) CA-Markov to determine land use projections 2). Soil and Water Assessment Tool to determine KRA and KAT values. The results obtained from the CA-Makov projection analysis showed that land use in 2029 experienced the largest increase in residential land use, which was 4100 Ha, while the use of vegetative land in the form of agricultural and forest land decreased by 4785 Ha. The KRA value in scenario B in all sub-watersheds is higher than in scenario A, this indicates that there is a decrease in the hydrological function of the watershed in the 2029 projection compared to 2019. The KRA value in scenario C is lower in all sub-watersheds compared to scenario B, even in some sub-watersheds the KRA value in scenario C is lower than scenario A. This shows that the KTA direction can improve the KRA value due to the projected land use in 2029, even the KRA value can be better than the existing land use in 2029. The KRA value in scenario C lower in all sub-watersheds compared to scenario B, even in some sub-watersheds the value of KRA in scenario C is lower than scenario A. This shows that the KTA direction can improve the KRA value due to the projected land use in 2029, even the KRA value can be better of existing land use in 2029.
Co-Authors Aditia Sapto Utomo Ashadi Maryanto Ashadi Maryanto Asti Nurmilah Dede Sulaeman Dede Sulaeman, Dede Dwi Pujo Tejo Baskoro Dwi Putro Tejo Baskoro Egidius Naitkakin Elianah Enni Dwi Wahjunie Evi Nursari Fahrizal Hazra Fitriani Hayati Hendi Hendra Bayu Hidayat Pawitan Kiki Rishki Ananda Kukuh Murtilaksano Kukuh Murtilaksano Navisha Maulita Dewi Nur Etika Karyati Nuraida Nuraida Nurlaila Mubarokah Putri, Savitri Khairunnisa Rahma Anisa Raushanfikr Bushron Saiful Akhyar Lubis Soemarno Soemarno Suria Darma Tarigan Tiwi Astriani Wahyu Purwakusuma Yayat Hidayat Yusuf, Sri Malahayati