【摘要】 卫星遥感成为观测和估算地面植被净初级生产力的一种极其有利的工具,其原因不仅仅在于它将人们从繁重的地面实验中解放出来,同时也因为它能够实现对大范围区域的植被净初级生产力进行实时监测。为了更加充分有效地利用卫星数据获取植被信息,我们在模式分解方法的基础上,建立了一种新的植被指数(VIPD)。根据地面实验建立的相应光合成曲线估算模型,估算武汉地区地域性植被净初级生产力(NPP),研究该地区植被生长年间变化状况。并通过和不同方法估算结果及地面调查结果进行比较,检验模型对该地区的适用情况,为该地区植被NPP长期监测研究提供可靠依据。更多还原

【Abstract】 Remote sensing was used as a powerful approach to estimate and supervise net primary productivity of terrestrial vegetation,for it is free from hard field works and realizes the estimation of NPP in a large region.A new vegetation index was developed based on pattern decomposition method and light-use efficiency model was taken to estimate NPP of Wuhan(mostly subtropical evergreen-deciduous forests) using Landsat-ETM data.The result was compared with the ones obtained by LUE model and other field investigation.更多还原