吉林西部地表植被生长期的遥感监测方法  

Terrestrial Vegetation Greenness Periods Based on the Remote Sensing Detection in West Jilin

作　　者：李晓东[1] 闫守刚[1] 

机构地区：[1]白城师范学院,白城137000

出　　处：《东北林业大学学报》2013年第3期40-42,98,共4页Journal of Northeast Forestry University

基　　金：吉林省教育厅"十二五"科学研究项目"向海自然保护区沙丘榆林土壤种子库对植被恢复的制约机制"(2013)

摘　　要：基于1998—2008年每15天的NDVI数据集,对吉林西部地表植被的生长状况进行了建模分析,由实验室内的人工判定取代传统上的回归方程分析,针对最终数学运算结果进行插值运算,得到研究区域地表植被生长期的起始与终止日期(植被绿度始期和绿度末期)以及生长期的持续天数。结果表明:吉林西部的地表植被生长期由5月上旬开始至9下旬结束,整个研究区域内植被生长期持续130 d左右,由西向东,地表植被生长期的天数逐渐减少。在空间上,地表植被生长始期由西向东越来越迟,时间相差20 d以上,生长终止期相差较小,东西趋于一致。Based on the normalized difference vegetation index （NDVI） set from 1998 to 2008, the growth conditions of land cover was conducted to establish a mathematical model, and the laboratory artificial determination was used to replace the traditional regression equation analysis. With the interpolated operation for the final mathernatieal resuh, the vegetation da- ta were extracted including the beginning dates of the growth season, the final dates of the growth season and the continu- ous days of the growth season. The results show that there is 130 days in the growth season from early May to late Septem- ber in the study area. From west to east, the date number of the growth season gradually reduces. In the spatial distribu- tion, the beginning date of the growth season gradually turns late with a 20-day difference from west to east. On the contra- ry, there is little difference for the final date of the growth season in the eastern and western region.

关 键 词：NDVI 植被生长期 遥感监测 吉林西部 

分 类 号：X87[环境科学与工程—环境工程]