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National Chung Hsing University Institutional Repository - NCHUIR > 農業暨自然資源學院 > 水土保持學系 > 依資料類型分類 > 期刊論文 >  Assessing reforestation placement and benefit for erosion control: A case study on the Chi-Jia-Wan stream, Taiwan

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/130287

標題: Assessing reforestation placement and benefit for erosion control: A case study on the Chi-Jia-Wan stream, Taiwan
作者: Lin, W.T.;Tsai, J.S.;Lin, C.Y.;Huang, P.H.
林昭遠
關鍵字: reforestation;fuzzy c-mean algorithm;erosion control;agricultural;pollution;soil-erosion;prediction;sediment;information;system;strips;width;usle;wepp
日期: 2008
Issue Date: 2012-12-07 15:52:28 (UTC+8)
關連: Ecological Modelling, Volume 211, Issue 3-4, Page(s) 444-452.
摘要: Improper agricultural activities accelerate soil loss and water pollution. A system for assessing reforestation placement and benefit was developed in this study. Digital elevation models, remotely sensed data extracted using fuzzy c-mean algorithm and geographic information systems coupled with sediment yield estimation and vegetated buffer strip models were used to discuss the efficiency of erosion control for land use change from the cultivated land to reforestation on the Chi-Jia-Wan stream watershed. In accordance with the concepts ofhigh sediment delivery ratio and vegetated buffer strips, 35.98 ha of reforestation placements were suggested in the study area. The sediment delivery ratio calculations were based on the concept of the probability density function of the travel time, evaluated as a function of contributing area. From the analyzed sediment results, the suggested placement and overused farmland can reduce 15544.01 and 6339.61 t/year of sediments, respectively. Sediment retrieved ratio of the suggested placement is 2.41 times as high as that of the overused farmland. The results show that the restoration sites made in the related policy should be examined and reassessed. (c) 2007 Elsevier B.V. All rights reserved.
Relation: Ecological Modelling
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 林昭遠
[依教師分類] 林昭遠

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