摘要
以西峡县2个年份同一季节的遥感数据为研究对象,利用图形处理软件(ERDAS IMAGINE)进行波段组合、图像增强、监督分类、矩阵分析和分类重编码,研究了河南省西峡县森林资源的时空变化.并且在此基础上利用GIS软件进行统计分析和遥感制图,从时空序列上分析了森林资源的动态变化情况.结果表明:从时间序列上看,1998～2002年西峡县阔叶林面积和针叶林面积有所增加,增加部分主要来源于退耕还林和荒地的植树造林;从空间序列上看,森林植被的变化主要集中于低海拔地区,高海拔地区主要集中于道路和河流附近.
This article studied on spatial-temporal changes of forest resources in Xixia county, Henan province. By means of IMAGINE software, TM data of 2 years in Xixia county were used for analyzing. Through band combination, image stretching, supervised classification, matrix analysis and recoding, images were ready for GIS analysis and RS image drawing. The result showed that areas of broad-leaf forest and areas of coniferous forest increased from 1998 to 2002, and the increased parts changed from fields and brass lands. It also showed that variables of forests concentrated in low altitude ,and in high altitude variables centralized near roads and rivers.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第4期53-56,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
国家"863"高技术研究发展计划(2003AA209060)
关键词
遥感分类
森林资源
动态度
西峡县
Remote classification
Forest resources
Changes degree
Xixia county
