1982—2013年准噶尔盆地植被长势变化分析  

Analysis on the Change of Vegetation Growth in Junggar Basin during 1982-2013

作　　者：刁鸣军[1] 夏朝宗[1] 

机构地区：[1]国家林业局调查规划设计院,北京100714

出　　处：《林业资源管理》2016年第5期39-46,共8页Forest Resources Management

摘　　要：利用准噶尔盆地1982—2013年的GIMMS NDVI3g数据,以及温度、降水、日照等气候因子数据,结合当地防沙治沙工程等人类活动,分析近32年来该区域的植被变化状况,结果表明:1)准噶尔盆地33.0%的区域呈现植被退化现象,约20.0%的区域呈现植被恢复现象。2)植被退化区域主要分布在干旱区域,植被覆盖稀疏,为半荒漠地带;植被显著恢复的区域主要位于植被较浓密区域。3)近32年来温度的上升使得干旱区的蒸发量增大,因降雨量变化不明显,因此干旱趋势加剧,植被的长势变弱;而准噶尔盆地南部区域,因区域供水平衡稳定,温度的上升促进了植被的生长。4)人类活动对该区域的植被长势变化影响不明显。土地沙漠化治理需要一个较长的周期,应该不断加强该区域的土地沙漠化治理及治理成效的监测。Junggar basin is located in the northern part of Xinjiang,China.It is the second largest inland basin in China.It is necessary to understand the vegetation trends and responses to climatic change and human activities in recent decades,so as to better understand the vegetation states and trends and to make more reasonable desertification control strategy.The long time series GIMMS NDVI data from 1982 to 2013 were used to analyze the changes of vegetation.And the CRU climate datasets,including temperature,precipitation and cloud cover from 1982 to 2013 were used to analyze the influence of climatic factors on NDVI in Junggar basin.Results show that：33.03%of Junggar basin shows vegetation degradation,and about 20%of the area shows vegetation restoration.The area of vegetation degradation is mainly distributed in the arid area,where the vegetation cover is sparse.The area of vegetation restoration is mainly located in the vegetation dense area.During the past 32 years,temperatures increased significantly in Junggar Basin,which increased the water evaporation in the ardi regions while the rainfall is relative stable,so that the drought area becomes more droughty and the NDVI decreased because of the drought.While in the semihumid region of Junggar basin,the increased temperature in recent 32 years promotes the growth of vegetation.Human activities in the past 32 years didn’t impose significant influence on the vegetation growth in Junggar basin,indicating that the land desertification control needs a longer period and we should continue to strengthen the monitoring of the regional desertification state and process.

关 键 词：准噶尔盆地 NDVI 气候变化 植被动态监测 

分 类 号：Q948[生物学—植物学]