2000—2013年阿勒泰地区植被覆盖变化研究  

Variations of Vegetation Coverage in Altay Area from 2000 to 2013

作　　者：魏小琴[1] 巴特尔.巴克 吴燕锋[1] 李维[1] 

机构地区：[1]新疆农业大学草业与环境科学学院,乌鲁木齐830052

出　　处：《林业资源管理》2015年第3期53-58,64,共7页Forest Resources Management

基　　金：国家国际科技合作计划资助项目(2010DFA92720-13);2014年度新疆研究生科研创新项目(XJGRI2014079);新疆维吾尔自治区土壤学重点学科资助

摘　　要：基于2000-2013年的MODIS NDVI数据结合气象数据资料，采用趋势分析法、相关分析法等，探究阿勒泰地区生长季植被覆盖的时空变化以及与气候因子之间的关系。结果表明：1）2000-013年问，阿勒泰地区植被覆盖呈现出北部区域的植被NDVI值高于南部区域，山地、河流区域植被NDVI值高于荒漠地区的分布格局；2）植被NDVl变化存在空间差异性，表现为中部和南部部分地区植被增加，北部地区植被减少；3）植被NDVI整体呈现出微弱的上升趋势，增长幅度为每10年增长0．002，在生长季49月中，各月的NDVI变化趋势存在差异性，全球变暖导致冰雪融水和降水量的增加是阿勒泰地区植被覆盖增加的主要原因；4）年均NDVI与气温的相关系数高于降水，并且生长季各月的NDVI与前1～5个月的气温、降水存在一定的滞后性。This paper analyzes the spatial and temporal variations of vegetation coverage in Altay area using the MODIS NDVI data and climate data from 2000—2013 based on the method of trends analysis and correlation analysis. The results showed that: 1) From 2000 to 2013,Altay area vegetation presents that vegetation NDVI value in the northern region is higher than the southern region,vegetation NDVI value in the mountains and river region is higher than that in desert region distribution pattern; 2) There are some spatial differences of vegetation cover,which shows that in central and southern parts,vegetation increases,the northern region vegetation decreases; 3) Vegetation NDVI overall shows a slight increasing trend,the increase rate is 0. 002 /10 a,there are differences of the NDVI change trend from April to September in growth season. The increase of vegetation coverage was caused by increased meltwater and precipitation under global warming background; 4) The correlation coefficient between annual NDVI and the temperature is higher than the precipitation,the NDVI of months in growth season lags behind the temperature and precipitation in 1 to 5 months before.

关 键 词：阿勒泰地区 植被覆盖 气温 降水 

分 类 号：S718.5[农业科学—林学]