|本期目录/Table of Contents|

[1]王涛.陕北洛河流域降水和植被变化对土壤侵蚀的影响[J].江苏农业科学,2018,46(20):295-300.
 Wang Tao.Impact of precipitation and vegetation change on soil erosion in Luohe River Basin of northern Shaanxi Province[J].Jiangsu Agricultural Sciences,2018,46(20):295-300.
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陕北洛河流域降水和植被变化对土壤侵蚀的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第46卷
期数:
2018年第20期
页码:
295-300
栏目:
资源与环境
出版日期:
2018-10-20

文章信息/Info

Title:
Impact of precipitation and vegetation change on soil erosion in Luohe River Basin of northern Shaanxi Province
作者:
王涛12
1.西安科技大学测绘科学与技术学院,陕西西安 710054;
2.黄土高原土壤侵蚀与旱地农业国家重点实验室/中国科学院水利部水土保持研究所,陕西杨凌 712100
Author(s):
Wang Tao
关键词:
修正通用土壤流失方程降雨侵蚀力植被变化土壤侵蚀洛河流域降水变率
Keywords:
-
分类号:
S157.1
DOI:
-
文献标志码:
A
摘要:
土壤侵蚀的自然与人为因素影响过程一直是学者们关注的热点问题。基于2000—2014年陕北洛河流域日降水、归一化植被指数(normalized difference vegetation index,简称NDVI)、数字高程模型(digital elevation model,简称DEM)、土壤类型等数据,结合修正通用土壤流失方程(revised universal soil loss equation,简称RUSLE)模型,定量分析该流域土壤侵蚀及降水、植被变化对该流域土壤侵蚀的影响。结果表明,(1)陕北洛河流域土壤侵蚀以微度侵蚀和轻度侵蚀为主,其面积共占区域总面积的86.29%。2000—2014年该流域土壤侵蚀模数呈增加趋势,其中微度侵蚀面积比例减少,其他侵蚀类型面积比例增加。(2)在植被覆盖因子固定情景下,降水变化导致微度侵蚀面积比例减少,而其他侵蚀类型面积比例增加,总体变化过程与自然状态下相似。在降水固定情景下,植被覆盖因子变化导致微度侵蚀面积比例增加,而其他侵蚀类型面积比例减少,总体变化过程与自然状态下完全相反,说明降水是土壤侵蚀的主导与控制因子,而植被覆盖因子作用相对较小。(3)降水对该流域土壤侵蚀面积比例及其变化速率分别起到79.17%、7290%的作用,植被覆盖因子对该流域土壤侵蚀面积比例及其变化速率分别起到20.83%、27.10%的作用。因此,降水在土壤侵蚀过程中的作用强于植被覆盖,且随着全球及区域气候变暖的影响,极端降水事件增加,陕北黄土高原地区土壤侵蚀过程中的降水作用将可能增强,须要加强对未来该地区极端降水的研究,科学合理地评估气候变化对该区域土壤侵蚀的影响。
Abstract:
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相似文献/References:

[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.
 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(20):185.
[2]杨孟豪,曹连海,夏帆,等.河南省许昌市降雨侵蚀力演变特征研究[J].江苏农业科学,2019,47(17):281.
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备注/Memo

备注/Memo:
收稿日期:2017-05-13
基金项目:国家重点研发计划(编号:2016YFC0501707);国家自然科学基金(编号:41671086);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:王涛(1984—),男,河南安阳人,博士,讲师,主要从事区域环境变化研究。E-mail:wht432@163.com。
更新日期/Last Update: 2018-10-20