摘要
基于2017年Landsat8 OLI_TIRS遥感影像数据和现场实地调查,对南水北调中线水源地淅川县石质荒漠化进行人机交互解译,通过计算归一化植被指数NDVI和植被覆盖度FVC,提取了淅川县石质荒漠化信息,对石质荒漠化土地分布图与高程、坡向、坡度和岩性4个因素进行叠加分析,得到淅川县石质荒漠化空间分布特征:石质荒漠化面积达745.539 3 km2,占淅川县总面积的26.44%;石质荒漠化分布区域主要集中在鹳河及丹江两岸人口稠密区和丹江口水库库区附近;石质荒漠化发生率在低海拔、南向缓坡地区和碳酸盐岩分布区域较高。
Based on Landsat8 OLI_TIRS data of 2017,this study conducted remote sensing interpretation and site investigation on stone desertification in Xichuan County,the water source area of the Mid-Route of the South-to-North Water Transfer Project. The information of stone desertification in Xichuan County was extracted by calculating normalized vegetation index（ NDVI） and vegetation coverage（ FVC）.The spatial distribution characteristics of stone desertification of the county were obtained by superposition analysis of the land distribution map of stone desertification and four factors including elevation,slope direction,slope degree and lithology. Stone desertification in Xichuan County covers an area of 745.54 km2,accounting for 26.44% of the total area of Xichuan County. Stone desertification in Xichuan County is mainly concentrated in the densely populated areas on both sides of Guanhe River and Danjiang River and near Danjiangkou Reservoir area.The results show that stone desertification is more developed in the gentle slope area and carbonate rocks in the south direction of low altitude area.
作者
赵培
吴卿
张璐
徐建昭
魏冲
杨柳
潘文玲
徐鹏
ZHAO Pei;WU Qing;ZHANG Lu;XU Jianzhao;WEI Chong;YANG Liu;PAN Wenling;XU Peng(North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Henan Soil and Water Conservation Supervision and Monitoring Station,Zhengzhou 450003,China;Water and Soil Conservation Workstations of Nanyang City,Nanyang 473000,China)
出处
《人民黄河》
CAS
北大核心
2018年第10期95-98,共4页
Yellow River
基金
河南省水利科技攻关计划项目(GG201544)
关键词
石质荒漠化
空间分布特征
南水北调中线工程
淅川县
stone desertification
spatial distribution characteristics
Mid-Route of South-to-North Water Transfer Project
Xichuan County
