摘要
我国西南喀斯特地区以石漠化为特征的生态环境退化严重,遥感是快速、大面积石漠化定性评价、关键指标定量提取必不可少的手段。在简述喀斯特生态地质背景复杂性的基础上,系统分析了目前喀斯特石漠化信息遥感提取在遥感数据源、提取方法、、精度验证、不确定性源等方面的问题,并提出未来石漠化遥感监测的重点研究内容。
Karst rocky desertification is the most serious problem of land degradation in karst regions,southwest China.Because of the inherent merits of remote sensing,it is the inevitable method to assess and monitor the degree and extent of karst rocky desertification at large scale.This article firstly reviewed the complexity of karst eco-geo-environmental conditions.Then it focused on the issues of the limitations of remote sensing data and existing methods,validation,and the fundamental reasons for uncertainties of remotely sensed extraction of karst rocky desertification.At last,this article presented and suggested that the new trends of remotely sensed monitoring karst rocky desertification.
出处
《地球科学进展》
CAS
CSCD
北大核心
2011年第3期266-274,共9页
Advances in Earth Science
基金
国家自然科学基金项目“桂西北喀斯特区域植被演替及其驱动机制研究”(编号:41071340)和“基于光谱和空间邻域分析的石漠化信息遥感反演研究”(编号:41001287)
中国科学院“西部之光”人才培养计划博士资助项目“石漠化治理生态工程评估关键生态因子遥感监测研究”资助
关键词
遥感
信息提取
光谱指数
不确定性
石漠化
Remote sensing
Information extraction
Spectral indices
Uncertainty
Karst rocky desertification
