Naharuddin Sumani - Profile on Academia.edu (original) (raw)
Papers by Naharuddin Sumani
International Journal of Design & Nature and Ecodynamics
The region consists of karst hills and dryland forest cover with high water demand. This watershe... more The region consists of karst hills and dryland forest cover with high water demand. This watershed is the main source of water for the community in fulfilling the needs of clean water, agriculture and tourism, so this research is important to do. Therefore, this study aims to determine the spatial distribution effect of dryland forest area on water availability in the Kumaligon Watershed. A spatialmeteorological method was used with an analytical approach to determine the distribution, while the Thornthwaite-Mather water balance analysis assessed the water availability. The result showed that dryland forest is concentrated in the upstream region of the karst hills with an area of 1,082.43 Ha and water availability of 4,332.34 m 3 /year. By comparing the water demand in 2021, namely, 1,218.75 m 3 /year, a criticality index of 0.28 was obtained, which indicates that the condition of the region was not critical. Based on these findings, the dryland forests in the region are expected to still have an adequate supply of water in the next 25 years.
Water Conservation & Management
The heterogeneity of infiltration has a strategic influence on the hydrological process in the wa... more The heterogeneity of infiltration has a strategic influence on the hydrological process in the watershed, and one of the factors affecting its rate and soil compaction is land use. Therefore, this study aims to compare infiltration rates in three land-use areas, namely secondary forest, agroforestry, and moor. A survey method was used, where field data observations were carried out at three locations. The infiltration rate measurement was performed using a double-ring infiltrometer with five repetitions at each sampling site. The results showed that the lowest value of 4.72 cm h-1 was recorded on the moorland, while agroforestry had the highest of 12.87 cm h-1. These findings indicate that land use has a significant role in changing soil physical properties and compaction, hence, sustainable soil and water conservation strategies are needed.
Global Journal of Environmental Science and Management : GJESM
Various systems of land use have a different capability in its function as a hydrological paramet... more Various systems of land use have a different capability in its function as a hydrological parameter and erosion. Surface runoff and erosion depends on the type of land use applied. The objective of this research was to find out the rate of surface runoff and erosion from agroforestry land use types at Miu sub-watershed, Palu watershed, Central Sulawesi, Indonesia, 2016. The method used was the multislot divisor on a plot measured 22 m x 2 m with 3 repetitions in 3 types of land use with a slope of 25-40% (steep). The result showsed that the largest surface runoff amounted from non-agroforestry land use type (10-year-old pure cocoa) by 72.674 liters/ha, followed by teak tree-and cocoa based agroforestry system aged 10 years old amounting to 59.815 liters/ha and the smallest is Candlenut tree-and cocoa-based agroforestry system aged 10 years old by 45.983 liters/ha. The highest erosion was recorded from non-agroforestry land use type (10-year-old pure cocoa) by 4,125 grams/ha, followe...
In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management.... more In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management. Furthermore, the watershed approach is the basis of FLR evaluations, which include evaluations of hydrology, land erosion, and other environmental factors. Currently, sustainable FLR planning is in the development stage. The present research was conducted to identify the erosion hazard level as a result of FLR performed on the Tambun Watershed in Central Sulawesi, Indonesia. Analysis of the erosion hazard level was conducted using the USLE equation. The results of this research revealed that FLR performed in a community forest and nursery, where Paraserianthes falcataria and Palaquium obovatum trees had been planted, had not been able to reduce the rate of soil erosion. Happen increase in soil erosion from 955.63 ton/ha/year (prior to FLR) to 1,097.52 ton/ha/year (after FLR). This was because these two types of plants were broad-leaved. Therefore, selecting the right type of plant is necessary. In particular, needle-leaved plants should be used in FLR activities to minimize soil erosion.
Jour nal of Chinese Soil and Water Conservation, 2019
In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management.... more In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management. Furthermore, the watershed approach is the basis of FLR evaluations, which include evaluations of hydrology, land erosion, and other environmental factors. Currently, sustainable FLR planning is in the development stage. The present research was conducted to identify the erosion hazard level as a result of FLR performed on the Tambun Watershed in Central Sulawesi, Indonesia. Analysis of the erosion hazard level was conducted using the USLE equation. The results of this research revealed that FLR performed in a community forest and nursery, where Paraserianthes falcataria and Palaquium obovatum trees had been planted, had not been able to reduce the rate of soil erosion. Happen increase in soil erosion from 955.63 ton/ha/year (prior to FLR) to 1,097.52 ton/ha/year (after FLR). This was because these two types of plants were broad-leaved. Therefore, selecting the right type of plant is necessary. In particular, needle-leaved plants should be used in FLR activities to minimize soil erosion.
Journal of Animal and Plant Sciences, 2018
Various systems of land use have a different capability in its function as a hydrological paramet... more Various systems of land use have a different capability in its function as a hydrological parameter and erosion. Surface runoff and erosion depends on the type of land use applied. The objective of this research was to find out the rate of surface runoff and erosion from agroforestry land use types at Miu sub-watershed, Palu watershed, Central Sulawesi, Indonesia, 2016. The method used was the multislot divisor on a plot measured 22 m x 2 m with 3 repetitions in 3 types of land use with a slope of 25-40% (steep). The result showsed that the largest surface runoff amounted from non-agroforestry land use type (10-year-old pure cocoa) by 72.674 liters/ha, followed by teak tree-and cocoa based agroforestry system aged 10 years old amounting to 59.815 liters/ha and the smallest is Candlenut tree-and cocoa-based agroforestry system aged 10 years old by 45.983 liters/ha. The highest erosion was recorded from non-agroforestry land use type (10-year-old pure cocoa) by 4,125 grams/ha, followed by teak tree-and cocoa based agroforestry system aged 10 years old amounting to 2,749 grams/ha and candlenut-and cocoa-based agroforestry system aged 10 years old by 1,280 grams/ha. Candlenut-and cocoa-based agroforestry system aged 10 was more effective to manage surface runoff and erosion rate.
Journal of Chinese Soil and Water Conservation, 2019
In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management.... more In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management. Furthermore, the watershed approach is the basis of FLR evaluations, which include evaluations of hydrology, land erosion, and other environmental factors. Currently, sustainable FLR planning is in the development stage. The present research was conducted to identify the erosion hazard level as a result of FLR performed on the Tambun Watershed in Central Sulawesi, Indonesia. Analysis of the erosion hazard level was conducted using the USLE equation. The results of this research revealed that FLR performed in a community forest and nursery, where Paraserianthes falcataria and Palaquium obovatum trees had been planted, had not been able to reduce the rate of soil erosion. Happen increase in soil erosion from 955.63 ton/ha/year (prior to FLR) to 1,097.52 ton/ha/year (after FLR). This was because these two types of plants were broad-leaved. Therefore, selecting the right type of plant is necessary. In particular, needle-leaved plants should be used in FLR activities to minimize soil erosion.
Books by Naharuddin Sumani
Media Madani, 2020
Rehabilitasi Hutan dan Lahan (RHL) adalah upaya untuk memulihkan, mempertahankan dan meningkatkan... more Rehabilitasi Hutan dan Lahan (RHL) adalah upaya untuk memulihkan, mempertahankan dan meningkatkan fungsi hutan dan lahan sehingga daya dukung, produktifitas dan peranannya dalam mendukung sistem penyangga kehidupan tetap terjaga. Sasaran kegiatan RHL adalah lahan-lahan kritis yang berada di dalam dan di luar kawasan hutan.
Secara nasional, lahan kritis pada tahun 2013 mencapai luas 24,20 juta hektar yang terdiri atas seluas 19,56 juta hektar berada pada kelas kritis dan seluas 4,63 juta hektar berada pada kelas sangat kritis. Selanjutnya capaian kegiatan RHL dalam bentuk pemulihan di dalam dan di luar kawasan hutan, pada tahun 2013 mencapai luas 0,66 juta hektar dan pada tahun 2017 menurun hingga 0,20 juta hektar.
Pemulihan hutan rusak di dalam kawasan hutan dalam bentuk rehabilitasi hutan (reboisasi), dan di luar kawasan hutan dalam bentuk rehabilitasi lahan (penghijauan: hutan rakyat, hutan kota, penghijauan lingkungan), serta rehbailitasi mangrove, rehabilitasi sempadan pantai dan rehabilitasi kawasan rawa gambut, tampaknya belum mampu mengimbangi perkembangan lahan kritis. Karena itu dibutuhkan perencanaan RHL.
Buku ini memuat uraian teori dan aplikasi perencanaan RHL dengan pemanfaatan teknologi Sistem Informasi Geografi (SIG), mulai dari tahapan rencana teknik RHL, rencana pengelolaan RHL, rencana tahunan RHL hingga rancangan kegiatan RHL. Sehingga menarik untuk dijadikan bahan bacaan bagi akademisi dan para perencana pada perencanaan kegiatan RHL
International Journal of Design & Nature and Ecodynamics
The region consists of karst hills and dryland forest cover with high water demand. This watershe... more The region consists of karst hills and dryland forest cover with high water demand. This watershed is the main source of water for the community in fulfilling the needs of clean water, agriculture and tourism, so this research is important to do. Therefore, this study aims to determine the spatial distribution effect of dryland forest area on water availability in the Kumaligon Watershed. A spatialmeteorological method was used with an analytical approach to determine the distribution, while the Thornthwaite-Mather water balance analysis assessed the water availability. The result showed that dryland forest is concentrated in the upstream region of the karst hills with an area of 1,082.43 Ha and water availability of 4,332.34 m 3 /year. By comparing the water demand in 2021, namely, 1,218.75 m 3 /year, a criticality index of 0.28 was obtained, which indicates that the condition of the region was not critical. Based on these findings, the dryland forests in the region are expected to still have an adequate supply of water in the next 25 years.
Water Conservation & Management
The heterogeneity of infiltration has a strategic influence on the hydrological process in the wa... more The heterogeneity of infiltration has a strategic influence on the hydrological process in the watershed, and one of the factors affecting its rate and soil compaction is land use. Therefore, this study aims to compare infiltration rates in three land-use areas, namely secondary forest, agroforestry, and moor. A survey method was used, where field data observations were carried out at three locations. The infiltration rate measurement was performed using a double-ring infiltrometer with five repetitions at each sampling site. The results showed that the lowest value of 4.72 cm h-1 was recorded on the moorland, while agroforestry had the highest of 12.87 cm h-1. These findings indicate that land use has a significant role in changing soil physical properties and compaction, hence, sustainable soil and water conservation strategies are needed.
Global Journal of Environmental Science and Management : GJESM
Various systems of land use have a different capability in its function as a hydrological paramet... more Various systems of land use have a different capability in its function as a hydrological parameter and erosion. Surface runoff and erosion depends on the type of land use applied. The objective of this research was to find out the rate of surface runoff and erosion from agroforestry land use types at Miu sub-watershed, Palu watershed, Central Sulawesi, Indonesia, 2016. The method used was the multislot divisor on a plot measured 22 m x 2 m with 3 repetitions in 3 types of land use with a slope of 25-40% (steep). The result showsed that the largest surface runoff amounted from non-agroforestry land use type (10-year-old pure cocoa) by 72.674 liters/ha, followed by teak tree-and cocoa based agroforestry system aged 10 years old amounting to 59.815 liters/ha and the smallest is Candlenut tree-and cocoa-based agroforestry system aged 10 years old by 45.983 liters/ha. The highest erosion was recorded from non-agroforestry land use type (10-year-old pure cocoa) by 4,125 grams/ha, followe...
In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management.... more In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management. Furthermore, the watershed approach is the basis of FLR evaluations, which include evaluations of hydrology, land erosion, and other environmental factors. Currently, sustainable FLR planning is in the development stage. The present research was conducted to identify the erosion hazard level as a result of FLR performed on the Tambun Watershed in Central Sulawesi, Indonesia. Analysis of the erosion hazard level was conducted using the USLE equation. The results of this research revealed that FLR performed in a community forest and nursery, where Paraserianthes falcataria and Palaquium obovatum trees had been planted, had not been able to reduce the rate of soil erosion. Happen increase in soil erosion from 955.63 ton/ha/year (prior to FLR) to 1,097.52 ton/ha/year (after FLR). This was because these two types of plants were broad-leaved. Therefore, selecting the right type of plant is necessary. In particular, needle-leaved plants should be used in FLR activities to minimize soil erosion.
Jour nal of Chinese Soil and Water Conservation, 2019
In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management.... more In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management. Furthermore, the watershed approach is the basis of FLR evaluations, which include evaluations of hydrology, land erosion, and other environmental factors. Currently, sustainable FLR planning is in the development stage. The present research was conducted to identify the erosion hazard level as a result of FLR performed on the Tambun Watershed in Central Sulawesi, Indonesia. Analysis of the erosion hazard level was conducted using the USLE equation. The results of this research revealed that FLR performed in a community forest and nursery, where Paraserianthes falcataria and Palaquium obovatum trees had been planted, had not been able to reduce the rate of soil erosion. Happen increase in soil erosion from 955.63 ton/ha/year (prior to FLR) to 1,097.52 ton/ha/year (after FLR). This was because these two types of plants were broad-leaved. Therefore, selecting the right type of plant is necessary. In particular, needle-leaved plants should be used in FLR activities to minimize soil erosion.
Journal of Animal and Plant Sciences, 2018
Various systems of land use have a different capability in its function as a hydrological paramet... more Various systems of land use have a different capability in its function as a hydrological parameter and erosion. Surface runoff and erosion depends on the type of land use applied. The objective of this research was to find out the rate of surface runoff and erosion from agroforestry land use types at Miu sub-watershed, Palu watershed, Central Sulawesi, Indonesia, 2016. The method used was the multislot divisor on a plot measured 22 m x 2 m with 3 repetitions in 3 types of land use with a slope of 25-40% (steep). The result showsed that the largest surface runoff amounted from non-agroforestry land use type (10-year-old pure cocoa) by 72.674 liters/ha, followed by teak tree-and cocoa based agroforestry system aged 10 years old amounting to 59.815 liters/ha and the smallest is Candlenut tree-and cocoa-based agroforestry system aged 10 years old by 45.983 liters/ha. The highest erosion was recorded from non-agroforestry land use type (10-year-old pure cocoa) by 4,125 grams/ha, followed by teak tree-and cocoa based agroforestry system aged 10 years old amounting to 2,749 grams/ha and candlenut-and cocoa-based agroforestry system aged 10 years old by 1,280 grams/ha. Candlenut-and cocoa-based agroforestry system aged 10 was more effective to manage surface runoff and erosion rate.
Journal of Chinese Soil and Water Conservation, 2019
In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management.... more In forest and land rehabilitation (FLR), the watershed is the major unit of watershed management. Furthermore, the watershed approach is the basis of FLR evaluations, which include evaluations of hydrology, land erosion, and other environmental factors. Currently, sustainable FLR planning is in the development stage. The present research was conducted to identify the erosion hazard level as a result of FLR performed on the Tambun Watershed in Central Sulawesi, Indonesia. Analysis of the erosion hazard level was conducted using the USLE equation. The results of this research revealed that FLR performed in a community forest and nursery, where Paraserianthes falcataria and Palaquium obovatum trees had been planted, had not been able to reduce the rate of soil erosion. Happen increase in soil erosion from 955.63 ton/ha/year (prior to FLR) to 1,097.52 ton/ha/year (after FLR). This was because these two types of plants were broad-leaved. Therefore, selecting the right type of plant is necessary. In particular, needle-leaved plants should be used in FLR activities to minimize soil erosion.
Media Madani, 2020
Rehabilitasi Hutan dan Lahan (RHL) adalah upaya untuk memulihkan, mempertahankan dan meningkatkan... more Rehabilitasi Hutan dan Lahan (RHL) adalah upaya untuk memulihkan, mempertahankan dan meningkatkan fungsi hutan dan lahan sehingga daya dukung, produktifitas dan peranannya dalam mendukung sistem penyangga kehidupan tetap terjaga. Sasaran kegiatan RHL adalah lahan-lahan kritis yang berada di dalam dan di luar kawasan hutan.
Secara nasional, lahan kritis pada tahun 2013 mencapai luas 24,20 juta hektar yang terdiri atas seluas 19,56 juta hektar berada pada kelas kritis dan seluas 4,63 juta hektar berada pada kelas sangat kritis. Selanjutnya capaian kegiatan RHL dalam bentuk pemulihan di dalam dan di luar kawasan hutan, pada tahun 2013 mencapai luas 0,66 juta hektar dan pada tahun 2017 menurun hingga 0,20 juta hektar.
Pemulihan hutan rusak di dalam kawasan hutan dalam bentuk rehabilitasi hutan (reboisasi), dan di luar kawasan hutan dalam bentuk rehabilitasi lahan (penghijauan: hutan rakyat, hutan kota, penghijauan lingkungan), serta rehbailitasi mangrove, rehabilitasi sempadan pantai dan rehabilitasi kawasan rawa gambut, tampaknya belum mampu mengimbangi perkembangan lahan kritis. Karena itu dibutuhkan perencanaan RHL.
Buku ini memuat uraian teori dan aplikasi perencanaan RHL dengan pemanfaatan teknologi Sistem Informasi Geografi (SIG), mulai dari tahapan rencana teknik RHL, rencana pengelolaan RHL, rencana tahunan RHL hingga rancangan kegiatan RHL. Sehingga menarik untuk dijadikan bahan bacaan bagi akademisi dan para perencana pada perencanaan kegiatan RHL