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运用水土保持综合治理效益计算方法(GB/T15774-2008)分析了陇南土石山区水土保持综合治理效益。研究结果表明:1)30年来陇南土石山区各措施累计调水104.40亿m~3,累计保土1.65亿t,调水保土效益主要来自坡面措施减蚀效益;2)截止到2011年,陇南土石山区获得的经济效益折合人民币359.4亿元,净增产值215.8亿元,累计净效益181.7亿元。累积完成治理面积28.96万hm~2;3)随着治理程度的提高,自然灾害有了一定的控制,受灾程度有了一定的减轻。陇南土石山区治理初期(1979)农业所占比例最大,其他产业产值非常小,说明在该时期主要以农业生产为主。到治理末期(2011)农业比例仍最大,但较1979年有所减小,牧业有所增加。该区通过水土保持措施的实施,生态环境有了很大的改善,人民生活水平也有了很大的提高。
Using the calculation method of comprehensive benefit of soil and water conservation (GB / T15774-2008), the benefit of comprehensive management of soil and water conservation in mountainous area of Longnan was analyzed. The results show that: 1) In the past 30 years, the total water transfer of various measures in Longnan rocky mountainous area has reached 10.440 billion m 3, accumulative total of 165 million t of soil, benefits of soil and water conservation are mainly from slope erosion mitigation benefits; 2) Longnan Rocky Mountain economic benefits obtained equivalent to 35.94 billion yuan, net output value 21.58 billion yuan, the cumulative net benefit of 18.18 billion yuan. Cumulatively completed treatment area of 289600 hm ~ 2; 3) With the improvement of the degree of governance, natural disasters have a certain degree of control, the degree of disaster has been reduced. Longnan soil and stone mountain in the early (1979) the largest proportion of agriculture, other industries output value is very small, indicating that the main period of agricultural production. By the end of governance (2011), the proportion of agriculture still remained the largest, but down from 1979, while animal husbandry increased. Through the implementation of soil and water conservation measures in this area, the ecological environment has been greatly improved and the living standards of the people have also been greatly improved.