基于遥感数据的广东植被指数时空变化研究  

The Spatio-temporal Patterns of VI in Guangdong Based RS Data

作　　者：陈丹[1] 钱峻屏[1] 张虹鸥[1] 叶树宁[1] 

机构地区：[1]广州地理研究所广东省遥感与地理信息系统重点实验室,广东省环境科学与技术公共实验室,广州510070

出　　处：《生态科学》2006年第5期412-416,共5页Ecological Science

基　　金：广东省科技计划项目(2003B31403);广东省自然科学基金(032212)

摘　　要：在GIS和RS工具支持下,利用多时相遥感数据MODIS13数据产品研究了广东省、珠三角以及广州市2000-2005年植被指数NDVI及其时空分布特征。结果表明:无论是广东省,珠三角还是广州市,区域植被指数有一定的时空分布规律和成因机制;广东省植被指数NDVI普遍介于0.4～0.7之间,具有很强的季节规律特征,夏高冬低,且年变化显著,这主要是因为该区气温和水分条件季节变化明显的缘故。广东省NDVI的地区差异显著,反映了广东省地表植被覆盖因受人类开发活动影响而比较破碎的特点。With the aid of ARC/Info and MRT, using the MODIS-NDVI data, we calculated the NDVI of Guangdong Province, Pearl River Delta and Guangzhou from 2000 to 2005. The result showed that the NDVI of region had special Spatio-temporal Patterns, the NDVI of the Guangdong Province were varied from 0.4 to 0.7, the seasonal variations of the NDVI in Guangdong were very remarkable, the NDVI of summers are higher than it of winter, and varied in years remarkably, because the seasonal swings in temperature and precipitation in Guangdong had a large impact. The zonal variations of mean NDVI Guangdong were very obvious, this indicated the feature of broken vegetation in Guangdong.

关 键 词：植被指数 时空格局 MODIS 遥感 广东 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]