Forest biomass estimation is the groundwork of analyzing carbon cycle and its dynamics in terrestrial ecosystems but the current estimation models had the problem of un-compatibility between total forest biomass and its components .

森林生物量估算是进行 陆地生态系统碳循环和碳动态分析的基础，但 现有估测模型存在着总量与分量不相容的问题。

In chapter two according to the requirements of detecting terrestrial high temperature events and the performance of current MWIR uncooled detector the basic parameters of its used optical system such as the focal length relative aperture and field of view are determined .

第二章从探测 地球 表面高温事件的使用要求出发，结合 当前中波红外非制冷探测器的性能，计算确定光学系统的焦距、相对孔径和视场角。

International Terrestrial Reference Frame : Current Status and its Future

国际 地球参考框架： 现状与未来

The vertical component of terrestrial magnetic field can be got with the vertical current .

由仪器的垂直 电流，计算 地 磁场垂直分量。

The westward coastal geostrophic current resulting from terrestrial runoff and increasing precipitation can cause the variance of the westward low requency current during tropical cyclones .

沿岸 入海径流和热带气旋期间降水量增加所致的沿岸西向地转流，会造成热带气旋发生期间沿岸西向低频 流变异。

S The water and heat balance of terrestrial ecosystem is a key point of studying the climate and micro climate form and change mechanism and it is important to keep the current ecosystems steady and recover the degraded ecosystems .

陆地生态系统水热平衡问题是研究气候和小气候形成及其变化机制的重要问题，也是维持 现有陆地生态系统平衡稳定以及退化生态系统恢复的关键。