内蒙古四大沙地植被NDVI变化及气候响应研究  

Research of Climate Response and NDVI Changes of Vegetation of Four Sandy in Inner Mongolia

作　　者：乌兰吐雅[1,2] 哈斯础鲁[3] 吉木色 常虹[1,2] 刘爱军 晔薷罕[1,2] 

机构地区：[1]中国科学院内蒙古草业研究中心,内蒙古呼和浩特010031 [2]内蒙古农牧科学院,内蒙古呼和浩特010031 [3]赤峰学院资源与环境学院,内蒙古赤峰024000 [4]内蒙古草原勘察规划院,内蒙古呼和浩特010051

出　　处：《安徽农业科学》2013年第25期10457-10459,10466,共4页Journal of Anhui Agricultural Sciences

基　　金：内蒙古农牧业科学院青年创新基金项目(2011QNJJM13);国家林业局林业公益性行业科研专项(201204202)

摘　　要：为了更好掌握内蒙古四大沙地的植被长势变化及气候响应,用GIMSS/NDVI数据对1981 ～ 2001年8月的植被NDVI值进行了研究.分析结果表明,四大沙地的植被NDVI平均值从高到低的顺序为呼伦贝尔沙地、科尔沁沙地、浑善达克沙地、毛乌素沙地.NDVI变异系数从大到小的顺序为浑善达克沙地、毛乌素沙地、科尔沁沙地,呼伦贝尔沙地.对四大沙地的8月NDVI数据与5～8月累积平均气温逐月进行回归分析结果都不具有显著性.而8月的NDVI数据与5～8月累积降水量逐月回归分析结果表明,沙地植被对降水量有明显的滞后效应.浑善达克沙地和毛乌素沙地NDVI与累积降水量有正相关,呼伦贝尔沙地和科尔沁沙地NDVI与累积降水量不具有显著性.In order to better master the major changes in vegetation growing and its climate effect in the four great sandy of Inner Mongolia,the change of its average values in August from 1981 to 2001 was studied by using GIMSS/NDVI data.The study showed that the average NDVI values for the sandy ranges from highest to lowest and they are Hulunbeier sandy land,Horqin sandy land,Hunshandake sandy land and MU WS sandy land.As for its variation coefficient range from largest to smallest they are Hunshandake,MU WS,Horqin and Hulunbeier.The regression analysis was conducted on August NDVI data and accumulative average temperature during May-August,the results have no significance.While regression analysis on August NDVI data and accumulative precipitation during May-August showed that sandy land vegetation has obvious legging effect on precipitation.Hunshandake sandy land and MU WS sandy land has positive correlation with accumulative precipitation,NDVI and accumulative precipitation of Hulunbeier sandy land,Horqin sandy land has no significance.

关 键 词：四大沙地 NDVI变化 气候响应 

分 类 号：S771.8[农业科学—森林工程]