陆地植被净第一性生产力的研究

回顾了当前国内外陆地植被净第一性生产力（ＮＰＰ） 的研究现状，分析了３ 种生产力模型（ 气候相关模型、过程模型和光能利用率模型） 在应用于全球和区域生产力研究时的长处及不足：气候相关模型在气候变化研究中应用比较多，但计算的只是潜在ＮＰＰ；过程模型着重于植物生长的生理生态过程，但过于复杂，模型中的参数不易获得；光能利用率模型因为可直接利用遥感数据成为ＮＰＰ模型发展的一个主要方面．对国内ＮＰＰ的研究及遥感手段在ＮＰＰ研究中的应用进行了分析．

Net primary productivity of terrestrial vegetationa review on relatedrsearches

Net primary production (NPP) of terrestrial wegetation is significant in global change study.Different NPP models were developed to simulate the distribution of global and regional NPP in the last two decades, of wbich, climate relative models,process models and energy use efficiency models were the main ones. Each kind of these NPP models had its advantages and disadvantages.Climate relative models were attractive for their applicability to climate change problems, but little insight into nonequlibrium phenomena was provided. Process models emphasized on the physiological and ecological processes of plant growth, but they were too complicated to get some parameters.Energy use efficiency models were attractive because the vegetation index data from satellite remotely sensed observations could be directly used to estimate the fraction of absorbed photosynthetically active radiation.The NPP research status and the application of remote sensing in NPP research in China were also reviewed in this paper.