摘要
基于河北省沽源县1998年、2003年和2008年同期TM遥感影像,利用像元二分模型和专家分类器,结合研究区土地利用图和野外考察资料,对该县近10 a来植被覆盖度动态变化时空特征进行分析,并参考统计数据,分析其生态治理情况。结果表明：在3个时间监测点内该县大部分地区处于中度覆盖和较高覆盖水平,植被覆盖度总体得到提高;1998年9月~2003年9月间植被覆盖处于稳定状态,2003年10月~2008年9月间植被覆盖度提高;轻微提高地区主要分布在高原农牧区,稳定区主要为南部低山林区;治理工程效果显著。
Based on the TM remote sensing images obtained in Guyuan County of Hebei Province in 1998,2003 and 2008 and the land-use map as well as field data of the study area,the authors analyzed the spatial and temporal patterns for dynamics changes of the vegetation cover in Guoyuan County in the past ten years by using the dimidiate pixel model and expert classifier and consulting the statistical data with the purpose of understanding the situation of ecological control The results show that most areas were in the moderate and relatively high cover in the three monitoring periods,with the vegetation cover being improved in general.The condition of vegetation cover was stable between 1998 and 2003,and was improved between 2003 and 2008.The areas with slightly increased vegetation cover was mainly distributed in the plateau farming-pasture area,and the stable areas were mainly distributed in the southern low mountain areas.The effect of the regulation project is remarkable.
出处
《国土资源遥感》
CSCD
2010年第2期113-117,共5页
Remote Sensing for Land & Resources
关键词
遥感
植被覆盖度
动态变化
时空
Remote sensing
Vegetation cover
Dynamic change
Spatial and temporal
