|本期目录/Table of Contents|

[1]郭力宇,郭昭,王涛,等.陕西渭河流域近15年土壤侵蚀时空变化分析[J].江苏农业科学,2018,46(02):185-190.
 Guo Liyu,et al.Spatio-temporal variation of soil erosion in Weihe River Basin of Shaanxi Province in the past 15 years[J].Jiangsu Agricultural Sciences,2018,46(02):185-190.
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第46卷
期数:
2018年02期
页码:
185-190
栏目:
资源与环境
出版日期:
2018-01-20

文章信息/Info

Title:
Spatio-temporal variation of soil erosion in Weihe River Basin of Shaanxi Province in the past 15 years
作者:
郭力宇 郭昭 王涛 张娅
西安科技大学测绘科学与技术学院,陕西西安 710054
Author(s):
Guo Liyuet al
关键词:
土壤侵蚀RUSLE模型降雨侵蚀力MODIS NDVI渭河流域水土保持生态环境保护政策参考
Keywords:
-
分类号:
S157.1
DOI:
-
文献标志码:
A
摘要:
渭河流域土壤侵蚀与气候变化、生态保护与建设政策、城市扩张等人类活动密切相关,受到广泛关注。基于渭河流域DEM、土壤类型、2000—2014年渭河流域气象站点逐日降水数据及MODIS NDVI数据,采用修正通用土壤侵蚀方程(RUSLE)估算流域土壤侵蚀模数,并分析2000—2014年渭河流域土壤侵蚀时空变化特征。结果表明,渭河流域2000—2014年植被呈改善趋势,其中陕北丘陵沟壑区、渭北高原沟壑区NDVI增加明显,分别提高了28.4%、15.1%。2000—2014年渭河流域土壤侵蚀以微度侵蚀和轻度侵蚀为主,共占总面积的61.47%;以2009年为拐点,之前微度侵蚀土壤面积呈增加趋势,而中度以上土壤侵蚀面积呈减少趋势,之后则完全相反。渭河流域不同地貌单元土壤侵蚀强度差异较大,渭河平原区以微度侵蚀为主,占该区域面积的80%以上;陕北丘陵沟壑区的中度及中度以上侵蚀强度的面积则占到了52.7%;渭北高原沟壑区以微度侵蚀和轻度侵蚀为主,占该区域面积的61%;秦岭北坡山区年侵蚀性降雨量较大,以中度及中度以上土壤侵蚀为主,占该区域面积的71%。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2017-04-13
基金项目:国家重点研发计划(编号:2016YFC0501707);黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金(编号:A314021402-1616)。
作者简介:郭力宇(1963—),男,陕西临潼人,博士,副教授,主要从事旅游地质研究。Tel:(029)85583176;E-mail:332781731@qq.com。
通信作者:王涛,博士,讲师,主要从事区域环境变化研究。Tel:(029)85583176;E-mail:wht432@163.com。
更新日期/Last Update: 2018-01-20