Analysis of The Correlation Between Land Use Changes in Sub Watershed Wuno Toward Lifetime of Wuno Reservoir, Sigi District, Central Sulawesi Province

Civil and Environmental Science Pub Date : 2019-04-01 DOI:10.21776/UB.CIVENSE.2019.00101

Wardani Yuliana, Suhartanto Ery, Haribowo Riyanto

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引用次数: 2

Abstract

Wuno Reservoir is located in Sigi Biromaru District, Sigi Regency, Central Sulawesi Province. It is planned for 50 years. This analysis to known the condition of ideal land use so that the life time of the reservoir reaches 50 years. Trend of land use change, erosion and sediment rate estimation using the ArcSWAT model. During 2008-2016, natural forest land use showed a downward trend, while mixed gardens, shrubs, fields and settlements showed an increasing trend. The erosion rate in 2008-2010 increased by 72.5%, in 2010-2012 it increased by 1.45%, in 2012-2014 decreased by 0.09% and in 2014-2016 increased by 0.98%. In 20082016 Low BEHI area was reduced by 3.74%, medium BEHI was increasing by 14.11%, BEHI High increased by 16.57% and BEHI Very High increased by 12.64%. This shows that the rate of erosion and the extent of BEHI are influenced by changes in land use. Based on the results of analyzing the lifetime of the reservoir, changes in land use also affect the reduced useful life of the reservoir. Vegetative land conservation efforts are adjusting forest areas so that rate of erosion decreases by 62.75%. Mechanical land conservation efforts in the form of the construction of 6 check dams so that weight of sediment decreases by 89.24%.

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苏拉威西省中部斯吉区乌诺小流域土地利用变化与乌诺水库寿命的相关性分析

乌诺水库位于苏拉威西省中部锡吉县锡吉比罗马鲁区。它的规划是50年。通过分析，确定了理想的土地利用条件，使水库的使用寿命达到50年。基于ArcSWAT模型的土地利用变化趋势、侵蚀沙率估算2008-2016年，天然林土地利用呈下降趋势，混合园林、灌木、田野和聚落土地利用呈增加趋势。2008-2010年侵蚀率增长72.5%，2010-2012年增长1.45%，2012-2014年下降0.09%，2014-2016年增长0.98%。2008 - 2016年低BEHI面积减少3.74%，中BEHI面积增加14.11%，高BEHI面积增加16.57%，高BEHI面积增加12.64%。这表明侵蚀速率和BEHI的程度受到土地利用变化的影响。根据水库寿命分析结果，土地利用变化对水库使用寿命的缩短也有影响。植被保护工作对森林面积进行了调整，使水土流失率下降了62.75%。以机械保地为主要形式，建设了6座防沙坝，使泥沙重量减少了89.24%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Civil and Environmental Science

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