基于NDVI的农牧交错带典型地区时空动态特征研究--以吉林西部为例

目的]探讨农牧交错带典型地区的时空动态特征。方法]基于MODIS归一化植被指数数据集(2000~2010年),采用空间自相关分析和趋势分析方法,以吉林西部为例,研究农牧交错带典型地区地表植被空间分布特征。结果]2000~2010年,吉林西部地表植被在生长季呈明显上升趋势;研究区地表植被的空间分布表现出正相关,但在局部地区地表植被分布有破碎倾向,空间分布的整体性一般。结论]该研究为人类合理保护自然提供科学依据。

The Temporal and Spatial Dynamic Characteristics of Typical Area in the Farming-pastoral Ecotone Based on NDVI-A Case of Western Jilin Province

Objective] To discuss the temporal and spatial dynamic characteristics of typical area in the farming-pastoral ecotone based on NDVI. Method] Based on the MODIS NDVI data sets from 2000 to 2010, the spatial distribution of NDVI for the above-ground vegetation in typical area of the farming-pastoral ecotone in western Jilin Province was studied by spatial autocorrelation analysis and trend analysis methods. Result] NDVI for the vegetation in the western Jilin Province performed a significantly rising trend in the growing season during 2000-2010. spatial distribution of aboveground vegetation in research region showed a positive correlation, but there was a fragmented distribution in some special areas, indicating the general integrity of vegetation distribution. Conclusion] This research provides scientific basis for the rational protection of nature.