Identification of priority areas for controlling soil erosion
Identification of priority areas for controlling soil erosion
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DOI：
10.1016/j.catena.2010.06.012
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发表时间：
2010-10
期刊：
影响因子：
6.2
通讯作者：
Xiwang Zhang;Bingfang Wu;F. Ling;Y. Zeng;Nana Yan;C. Yuan
中科院分区：
文献类型：
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作者：
Xiwang Zhang;Bingfang Wu;F. Ling;Y. Zeng;Nana Yan;C. Yuan
保护的优先次序是规划自然资源管理的一个重要考虑因素，使决策者能够实施长期更可持续的管理战略。然而，仅以目前的侵蚀状况或相对指标，并不能准确地确定优先保护区。本文的目的是通过一个特定的多准则评价方法来确定保护优先级。侵蚀风险趋势表明侵蚀风险增加的区域，并根据永定河流域土壤侵蚀的不稳定性，将其作为确定优先事项的评价标准之一。在本文中，植被覆盖，土地利用和坡度被用来评估侵蚀风险和侵蚀风险的趋势，通过比较2000年和2006年之间的侵蚀风险的结果。利用这些信息，优先保护区分为六个级别。最高优先级的两个区域覆盖了严重侵蚀或近期侵蚀风险大幅增加的区域（4722.56km2，占研究面积的11.82%），并建议作为侵蚀控制区域，并采取适当的保护策略。中间两个层次为侵蚀状态稳定或变化不大的区域，只需采取较小的措施。所提出的方法是快速和直接的，显示出良好的潜力，成功的应用在其他领域。
Conservation prioritization is an important consideration for planning of natural resources management, allowing decison makers to implement management strategies that are more sustainable in the long-term. However, only a current erosion status or a relative index cannot exactly identify priority area for conservation. The objective of this paper is to identify conservation priorities by a specific multicriteria evaluation method. Trends in erosion risk indicate regions of increasing erosion risk and are also chosen as one of the evaluation criteria to identify the priorities based on the instability of soil erosion in the Yongding river basin. In this paper, vegetation cover, land-use, and slope gradient are used to assess erosion risk and trends in erosion risk are obtained by comparing the results of erosion risk between 2000 and 2006. Using this information, the priority conservation areas are graded into six levels. The two highest priority levels cover the regions with severe erosion or a substantial recent increase in erosion risk (4722.56km2, or 11.82% of the study area), and are recommended as erosion control regions with appropriate conservation strategies. The middle two levels cover the regions with stable erosion status or slight change, needing only minor measures. The method presented is fast and straightforward, showing good potential for successful application in other areas.