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河南省近十年来土壤侵蚀时空变化分析 |
Analysis of spatial and temporal changes of soil erosion in Henan province in the last ten years |
投稿时间:2020-05-15 修订日期:2020-06-29 |
DOI: |
中文关键词: 河南省 土壤侵蚀 定量 RUSLE |
英文关键词: Henan province soil erosion quantitative RUSLE |
基金项目:国家自然科学基金重点项目(51739009);国家重点研发计划(2018YFC0406501) |
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中文摘要: |
【目的】为定量评价河南省土壤侵蚀状况,实现河南省农业高质量发展,【方法】本文以RUSLE模型为基础,利用多源遥感数据、数字高程模型,水文统计数据、气象数据等,系统分析了河南省近10年来土壤侵蚀的时空变迁,并结合地理探测器方法探讨了研究区土壤侵蚀可能的驱动因素。【结果】研究表明:2008-2018年河南省土壤侵蚀以微度侵蚀为主,其面积占全省95%以上且逐年递增,轻度侵蚀区面积逐年递减,中度及以上侵蚀区域面积无明显变化趋势;河南省西部、西南部及南部的地区土壤侵蚀状况近年来有明显改善,而西北部及北部黄河流域的土壤侵蚀模数维持相对较高状态;坡度对土壤侵蚀的解释力最强,且与其它因子有强交互作用,是影响河南省土壤侵蚀的主要因素。【结论】本研究可以为河南省生态治理及环境保护政策制定提供科学依据,促进黄河流域的绿色健康发展。 |
英文摘要: |
In order to quantitatively evaluate the soil erosion status and achieve high-quality agricultural development in Henan province, this study systematically analyzed the spatial and temporal changes of soil erosion in the past 10 years using RUSLE model. After that, we discussed the possible driving factors of soil erosion with the method of geographic detectors. The research shows that soil erosion in Henan province was dominated by slight erosion, whose area accounts for more than 95% of the province and increases year by year from 2008 to 2018. The area of light erosion area decreases year by year while the area of moderate and above erosion area has no obvious change trend. The soil erosion situation in the western, southwest and southern regions of Henan province has improved significantly in recent years, while the soil erosion modulus in the northwest and north Yellow River basins has remained relatively high. The slope are the main factors affecting soil erosion because of its strongest interpretation and interaction. This research can provide a scientific basis for the formulation of ecological governance and environmental protection policies so as to promote the green and healthy development of the Yellow River Basin. |
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