中文摘要：

利用遥感技术监测胡杨叶片的叶绿素含量可以为林地经营管理、胡杨资源保护利用提供快速及时的信息。利用ISI921VF-512野外地物光谱辐射计实地测定了胡杨生长季节6月至10月每月塔里木河上游天然胡杨叶片393-1095nm可见-近红外波段的高光谱数据以及叶片叶绿素含量,并对叶片叶绿素含量与光谱反射率进行了相关分析,建立了基于高光谱指数的胡杨叶片叶绿素估测模型。结果表明：一元线性模型中,鲜重叶绿素a,b,a＋b含量与高光谱指数NDVI705的相关性均达到了极显著水平,且在十三种高光谱指数里相关系数r最大;同时建立了由鲜重叶绿素a,b,a＋b含量与高光谱指数的多元线性回归模型;为胡杨生理状态与健康状况评价提供了理论依据。

英文摘要：

The Populus Euphratica in Tarim River Basin has important biological and ecological conservation values.Using remote sensing techniques to monitor Populus Euphratica leaf chlorophyll content for could provide rapid and timely information woodland management,resource protection and utilization of Populus euphratica.In this study ISI921VF-512 field spectral radiometer was used to measure the 393-1095 nm visible-near infrared band hyperspectral data of natural Populus euphratica leaf chlorophyll content in Tarim River upstream in growth season from June to October monthly.Correlation analysis was carried out for the leaf chlorophyll content and spectral reflectance,and estimation model of Populus euphratica chlorophyll was established based on hyperspectral indices.The results showed that in unary linear regression model,the correlation of the fresh weight chlorophyll a,b,a ＋ b content and hyper spectral index NDVI705 achieve very significant levels,and the correlation coefficient R is the biggest in the 13 kinds of hyperspectral indices; at the same time multivariate regression model was set up by the fresh weight chlorophyll a,b,a ＋ b content and hyperspectral indices.It provides a theoretical basis for Populus euphratica physiology and health evaluation.