ZHANG Xin,YIN Rui-ping,WANG Jian.Benefit of the Treatment to the Soil and Water Erosion in Dadonggou Small Basin in Keshiketeng County[J].Research of Soil and Water Conservation,2009,16(05):255-259.
克什克腾大东沟小流域水土流失治理效益分析
- Title:
- Benefit of the Treatment to the Soil and Water Erosion in Dadonggou Small Basin in Keshiketeng County
- 分类号:
- S157
- 摘要:
- 克什克腾旗低山丘陵区由于长期的垦草造田活动，已使自然环境恶化，为了恢复与重建退化的生态系统，当地人们群众在政府部门的指导下，进行了大规模的生态建设。通过对流域的综合治理状况，环境改善状况，经济状况进行分析，为今后该地区小流域综合治理提供科学依据。在对克什克腾旗大东沟小流域水现状调查分析的基础上，采用柯布-道格拉斯方程（Cobb-Douglas），选取人均水浇地面积、林草植被盖度和水土流失治理率3个影响因子，进行生产弹性与边际变化额分析。结果表明：这3个影响因子的弹性系数均为正值，其中，水浇地面积的生产弹性系数最大，这表明以上3个影响因子均对农业生产总值起重要作用，水浇地面积的变化在影响农业生产总值中占首要地位。经过治理，该小流域的水土流失取得了显著成效。植被盖度增大，水土流失治理率增加，人均产值，人均纯收入以及单位面积粮食产量均有显著增长。
- Abstract:
- In the hilling area of Keshiketeng County,the natural environment has deteriorated due to long-term tilling and crop production.In order to recover and rebuild the ecosystem large scale ecosystem construction projects have been implemented under the leadership and instruction of the local governmennt.Summarizing the achievement in comprehensively treatment to the deteriorated ecosystem and the improvement to the environment in a small basin,the authors made an analysis on the economical situation.The conclusion of the paper could be a scientific reference for future basin treatment practices.Based on the example of Dadonggou small basin in Keshiketeng County and adopted the Cobb-Douglas Equation,the author took the irrigated land area per person,the coverage of trees and grasses and the treatment ratio to the soil and water erosion as the three affecting factors,made an analysis on the productive elasticity and the value of marginal change.It has been concluded that the elasticity coefficient of the three affecting factors are all positive and among of them the irrigated land area affected the most.This shows that the three affecting factors are all very important for agrocultural production,the irrigated land area is the first importance.After the erosion in the Dadonggou small basin has been controlled,the vegetation,crop production and people’s income are all have been increased.
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备注/Memo
收稿日期:2009-3-25;
作者简介:张欣(1972-)，女，河北人，硕士，工程师，从事水土保持的研究。E-mail：nmmkszx@163.com