南方红壤丘陵区小流域水土保持综合效益评价——以江西阳坑小流域为例

发布时间：2018-09-04 18:53

【摘要】：随着国家对水土保持工作的不断重视,越来越多的水土保持措施开始实施,为评定水土保持工作开展情况,水土保持综合效益评价工作显得尤为重要。因此,选取南方红壤丘陵区水土流失严重的江西阳坑小流域为例,以2005年为基准年,通过层次分析法选择涉及生态效益、经济效益、社会效益的13个评价指标,从单项效益入手,运用市场价值法、替代市场法、对比分析法等方法直接计算水土保持各单项效益价值,从而得到三大效益及综合效益价值。结果表明:江西阳坑小流域经过水土保持治理之后,2005年水土保持综合效益总价值为12 445.42万元。其中生态效益价值为10 240.65万元,占82.29%;单项效益价值大小排序依次为:保水效益净化大气效益保肥效益保土效益。经济效益价值为894.13万元,占7.18%;单项效益价值排序为:粮食增产效益经果林效益水保林效益。社会效益价值为1 310.64万元,占10.53%;单项效益价值排序依次为:改善群众经济效益提高土地生产率效益增加耕地效益减少泥沙淤积效益。评价结果表明水土保持生态效益在水土保持工作中占有决定性地位,这将为今后水土保持工作提供重要的理论依据,同时也将提升人们对水土保持工作的了解与认识。
[Abstract]:More and more measures of soil and water conservation have been put into practice with the country paying more and more attention to the work of soil and water conservation. In order to evaluate the development of soil and water conservation, it is very important to evaluate the comprehensive benefit of soil and water conservation. Therefore, the Yangkeng small watershed with serious soil and water loss in the red soil hilly region of southern China is selected as an example. Taking 2005 as the reference year, 13 evaluation indexes involving ecological benefit, economic benefit and social benefit are selected through the Analytic hierarchy process (AHP). In this paper, the value of individual benefits of soil and water conservation is calculated directly by using market value method, substitute market method and comparative analysis method, and three benefits and comprehensive benefit values are obtained. The results show that the total benefit of water and soil conservation in Yangkeng small watershed of Jiangxi Province in 2005 is 124.4542 million yuan after soil and water conservation management. The value of ecological benefit is 102.4065 million yuan, accounting for 82.29 yuan, and the order of individual benefit value is: water conservation benefit, atmosphere benefit, fertilizer benefit, soil conservation benefit. The value of economic benefit is 8.9413 million yuan, accounting for 7.18 yuan, and the order of single benefit value is as follows: the benefit of increasing grain yield is the benefit of fruit forest, the benefit of water conservation is the benefit of forest conservation. The social benefit value is 13.1064 million yuan, accounting for 10.53 yuan, and the order of individual benefit value is: improving the economic benefit of the masses, raising the land productivity benefit, increasing the cultivated land benefit, reducing the silt deposition benefit. The evaluation results show that the ecological benefit of soil and water conservation plays a decisive role in soil and water conservation work, which will provide an important theoretical basis for future soil and water conservation work, and will also enhance people's understanding and understanding of soil and water conservation work.
【作者单位】：中国科学院水利部水土保持保持研究所土壤侵蚀与旱地农业国家重点实验室;中国科学院大学;西北农林科技大学土壤侵蚀与旱地农业国家重点实验室;南昌工程学院;万安县水利局;
【基金】：国家重点研发计划专题计划(2016YFC0501707) 中国科学院西部之光项目;中国科学院青年创新促进会(2011289)
【分类号】：S157

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