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新时代水土流失治理目标及评价标准

Objectives and evaluating indicators of soil erosion control in the new era

  • 摘要: 中国经济社会发展进入新时代,研究水土流失治理目标及考评指标,对全面防治水土流失及其影响,满足新时代人民对美好生态环境的新需求,推进美丽中国建设具有重要意义。作者分析了中国自然地理特点、水土流失治理进度与成效、经济社会发展需求,对比分析治理水土流失面积与减少水土流失面积之间不对应的相互关系及客观规律,指出水土流失治理进度面临的天花板制约。得出:1)中国将长期存在水土流失是基本国情,单一以减少水土流失面积为治理目标不够全面,存在不足;2)未来应以降低水土流失强度及其危害,恢复水土保持功能为水土流失治理目标,应以在当前经济、技术条件下,我们可实现、社会可接受、又不构成较大水土流失危害的水土流失强度为治理的达标标准;3)根据区域土壤侵蚀现状、自然环境条件、经济发展水平、社会需求等,按全国水土保持区划类型区分别确定水土流失治理标准;4)根据水土流失强度降低的不同成效予以不同的权重,不同水土保持主导功能区应建立各自特点的监测评价指标;5)以降低水土流失强度,恢复和提高水土保持功能作为确定不同区域水土保持率的评价基础与标准。

     

    Abstract:
    Background China's economic and social development has entered a new era. It is of great significance to study soil erosion control targets and evaluation indicators to comprehensively control soil erosion and its impact, thus meeting the new needs of people in the new era for a beautiful ecological environment, and promoting the construction of a beautiful China.
    Methods This paper analyzed the characteristics of China's natural geography, the progress and effectiveness of soil erosion control, and the needs of economic and social development. It compared and analyzed the uncorresponding relationship between the area of soil erosion control and the area of soil erosion reduction and objective laws, and finally pointed out the ceiling constraints to soil erosion control.
    Results 1) The soil erosion will exist in China for a long time is the basic national situation. The sole goal of reducing the area of soil erosion is incomplete, in which there are shortcomings. 2) Reducing soil erosion intensity and its damage and restoring soil and water conservation functions should be the goal of soil erosion control in the future. Under the current economic and technological conditions, the soil erosion intensity, which we may achieve, is socially acceptable, and does not cause a major soil erosion hazard, should be applied as the approvable standards of control. Reducing soil erosion intensity should be the control standard for governance. 3) Based on the status of regional soil erosion, natural environmental conditions, economic development level, social needs, etc., the varied soil erosion control standards corresponding to types of national soil and water conservation divisions should be determined. 4) Different weights should be given to different effects of reducing soil erosion intensity. Monitoring and evaluation indicators of their own characteristics should be established in different leading functions area of soil and water conservation. 5) Reducing the soil erosion intensity, restoring and increasing the soil and water conservation function should be used as the evaluation basis and standard for determining the soil and water conservation rate in different regions.
    Conculsions The goal, standards, monitoring and evaluation indicators of soil erosion control in the era will be accordingly adjusted.

     

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