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Vol.50, No.3, PP.89-130
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1
Occurrence Potential Assessment Model of Debris Flow Torrents Based on the Hillslope Debris Flow Index in a Catchment in a Slate Region
50(3):89-101
Tien-Chien Chen* Szu-Yu Chen
* Corresponding Author. E-mail : tcchen@mail.npust.edu.tw
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2
Automated Extraction of Surface Grain-Size Distribution From UAV Images
50(3):102-115
Hsun-Chuan Chan Po-Wei Lin Hui-Chun Cheng
* Corresponding Author. E-mail : hcchan@nchu.edu.tw
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3
Simulation and Evaluation of Habitat Suitability Index for Fish: Example of Dashin Village in Hualien County
50(3):116-123
Shu-Yuan Chen [1] Jui-Min Kuo [1] Yu-Lien Sung [1] Tung-Jer Hu [2] Yu-Jen Chou[3]
* Corresponding Author. E-mail : tjhu@ntu.edu.tw
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4
Erosion Hazard Assessment in Forest and Land Rehabilitation for Managing the Tambun Watershed in Sulawesi, Indonesia
50(3):124-130
Naharuddin* Abdul Wahid Rukmi Sustri
* Corresponding Author. E-mail : pailing@gmail.com
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Erosion Hazard Assessment in Forest and Land Rehabilitation for Managing the Tambun Watershed in Sulawesi, Indonesia
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Naharuddin* Abdul Wahid Rukmi Sustri

Abstract
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.
Keywords: erosion, watershed, rehabilitation, forest, land
Tadulako University, Faculty of Forestry, Forestry Department, Palu City, Central Sulawesi, Indonesia
* Corresponding Author. E-mail : pailing@gmail.com
Received: 2019/06/14
Revised: 2019/06/26
Accepted: 2019/10/05
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