基于树木年轮的呼图壁河流域草地归一化植被指数重建  

Reconstruction of Normalized Difference Vegetation Index of Grassland in Hutobi River Basin Based on Tree-Ring

作　　者：高卫东[1] 袁玉江[2] 张瑞波[2] 

机构地区：[1]济南大学,济南250002 [2]中国气象局树木年轮理化研究重点开放实验室(中国气象局乌鲁木齐沙漠气象研究所)

出　　处：《东北林业大学学报》2012年第4期26-30,共5页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(40801234);山东省自然科学基金项目(ZR2011DM01;国家公益性行业(气象)科研专项(GYHY20080601;国家科技基础性工作专项(2007FY220200);中国气象局新技术推广项目(CMATG2008Z13)

摘　　要：利用天山北坡中部呼图壁河流域6个标准化年表,结合NOAA/AVHRR-NDVI资料提取研究区1981—2001年生长季草地各月最大INDV(归一化植被指数)值。结果表明:当年生长季草地最大INDV与树木年轮指数有较好的相关关系,夏末、秋初草地月最大INDV与树轮指数的相关性较好。将呼图壁河流域草地9月最大INDV与相关较好的3个标准化年表序列进行多元回归分析,重建了研究区1662—2001年9月草地最大INDV值,重建方程的相关系数达到0.86,重建值对实测值的方差解释量分别为73.0%,达到0.000 012的显著性水平,重建结果是可靠的。Monthly maximum Normalized Difference Vegetation Index（NDVI） of grassland in Hutobi River Basin in growing season from 1981 to 2001 was extracted using six well-replicated standardized chronologies.Results show that the maximum NDVI in the current growing season has a good correlation with tree-ring index,and the maximum NDVI in late-summer and early-fall have a much stronger correlation with tree-ring index.The maximum NDVI of grassland in September from 1662-2001 was reconstructed by multiple regression analysis of the maximum NDVI in September and tree-ring standardized chronologies having a good correlation with the maximum NDVI.The correlation coefficient of the reconstruction equation is 0.86,and the reconstructed value of the explained variance to the measured values is 73.0%,reaching a significant level of 0.000 012.It indicates that the remote sensing data of NDVI from 1981-2001 and the reconstructed value has a good correlation.

关 键 词：树木年轮 归一化植被指数 呼图壁河流域 

分 类 号：S812[农业科学—草业科学]