[1]曹佳云,杨勤科,王程,等.县域LS因子提取与分析——以陕西长武县为例[J].水土保持研究,2012,19(02):7-10.
 CAO Jia-yun,YANG Qin-ke,WANG Cheng,et al.Extraction and Analysis of LS Factor at County Scale——Taking Changwu County as an Example[J].,2012,19(02):7-10.
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县域LS因子提取与分析——以陕西长武县为例()
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《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]

卷:
19卷
期数:
2012年02期
页码:
7-10
栏目:
出版日期:
2099-01-01

文章信息/Info

Title:
Extraction and Analysis of LS Factor at County Scale——Taking Changwu County as an Example
作者:
曹佳云1 杨勤科12 王程1 丑述仁1
1. 西北大学, 城市与环境学院, 西安 710127;
2. 中国科学院, 水利部, 水土保持研究所, 陕西 杨凌 712100
Author(s):
CAO Jia-yun1 YANG Qin-ke12 WANG Cheng1 CHOU Shu-ren1
1. Department of Urban and Environment, Northwest University, Xi’an 710127, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
LS因子提取区域土壤侵蚀DEM
Keywords:
LS extractingregional soil erosionDEM
分类号:
S157
摘要:
LS计算是利用USLE等坡面模型进行流域与区域土壤侵蚀评价与制图的基础,在对第四次土壤侵蚀普查试点县进行LS因子提取工作的基础上,以长武县为例,总结介绍县域LS因子提取的主要技术环节、主要技术要点及工作流程,并对LS因子提取结果进行评价和分析。从提取的坡度、坡长、LS因子的统计和空间分布特征看,基本可反映该地区的塬面、塬坡、现代沟坡和川地等地貌特征。结果表明,利用前期的理论研究和技术开发,可提取LS因子,该因子具有一定科学性,可满足土壤侵蚀的宏观评价要求。
Abstract:
It is essential to calculate LS factor for soil erosion assessment and mapping based on slope models at watershed and regional scale,such as USLE.Based on the LS factor extraction work in the experimental counties of the Fourth National Soil Erosion Survey,this paper took Changwu County as an example and summarized its main technical links,key technologies and workflow.From the statistical and spatial characteristics of extracted slope,slope length and LS factor,the extracted factors can basically reflect the plateau,plateau slopes,modern gully and plain ground features of this area.The result of the LS factor extraction had been assessed and analyzed too.It shows that LS factor can be rationally extracted based on our prior results on theory and technology,and the extracted factor can meet the need of soil erosion assessment at macro-scale.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2011-9-20;改回日期:2011-10-24。
基金项目:国家自然科学基金(41071188)
作者简介:曹佳云(1987- ),女,陕西渭南人,在读硕士研究生,主要从事GIS应用研究。E-mail:caojiayun@163.com
通讯作者:杨勤科(1962- ),男,陕西省陇县人,教授,博士,主要从事区域水土流失与GIS应用研究。E-mail:qkyang@nwu.edu.cn
更新日期/Last Update: 1900-01-01