[1]王晓慧,陈永富,陈尔学. 近30年三北防护林工程区中阳县土壤侵蚀变化分析[J].西北林学院学报,2012,27(05):1-5.
 WANG Xiao-hui,CHEN Yong-fu,CHEN Er-xue. Change Analyses of Soil Erosion in 30 Years in Zhongyang County, Regions of Three-North Shelter Forest Project[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(05):1-5.
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 近30年三北防护林工程区中阳县土壤侵蚀变化分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第27卷
期数:
2012年05期
页码:
1-5
栏目:
出版日期:
2012-09-20

文章信息/Info

Title:
 Change Analyses of Soil Erosion in 30 Years in Zhongyang County, Regions of Three-North Shelter Forest Project
文章编号:
1001-7461(2012)05-0001-05
作者:
 王晓慧陈永富陈尔学
 (中国林业科学研究院 资源信息研究所,北京 100091)
Author(s):
 WANG Xiao-hui CHEN Yong-fu CHEN Er-xue
 (Institute of Forest Resource Information Techniques, CAF, Beijing 100091, China)
关键词:
 三北防护林土壤侵蚀变化RUSLE中阳县
Keywords:
 Three-north Shelter Forest project soil erosion change RUSLE Zhongyang County
分类号:
S714.7
文献标志码:
A
摘要:
 基于遥感和GIS,应用修正的通用土壤流失方程(RUSLE)对比分析中阳县实施三北防护林工程后1978年、1992年和2006年的土壤侵蚀量变化,掌握三北防护林工程建设对水土流失治理的影响,为进一步制定相应的治理措施提供科学依据。结果表明,中阳县土壤侵蚀面积减少,比工程建设初期减少了305.56 km2,土壤侵蚀强度降低,从建设初期的极强烈侵蚀成为中度侵蚀。从1978-1992年,中阳县发生轻度以上土壤侵蚀面积减少了145.52 km2,平均土壤侵蚀模数降低了1 619.04 t·km-2·a-1,尽管土壤侵蚀强度仍然为极强烈,但是整体来说土壤侵蚀治理初步呈现好转。从1992-2006年,中阳县发生轻度以上土壤侵蚀面积减少了160.01 km2,平均土壤侵蚀模数降低了5 962.57 t·km-2·a-1,土壤侵蚀强度从极强烈降低到中度,土壤侵蚀面积中有588.60 km2侵蚀强度降低,占侵蚀面积的75.21%,土壤侵蚀呈现逆转趋势。土壤侵蚀强度降低的土地,主要是由于三北防护林工程实施以来,荒山造林、退耕还林和加强林地管护,以及农田基本建设工程改造坡耕地成为梯田。

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