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Objectives and evaluating indicators of soil erosion control in the new era |
JIANG Dewen |
The Center of Water and Soil Conservation Monitoring, Ministry of Water Resources, 100053, Beijing, China |
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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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Received: 15 January 2020
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