美 英 un.净初级生产力 英汉 un. 1. 净初级生产力
Net primary productivity (ecology) stands for the difference between all the carbon that’s fixed by the primary producers of the ecosystem and the part of that fixed carbon that the primary producer utilizes for its own cellular respiration needs. In biology, net primary productivity is defined ...
Net primary productivity (NPP) is the rate at which all plants in an ecosystem produce net useful chemical energy. While gross primary productivity (GPP) is the rate at which primary producers save and collect biomass for energy conservation. NPP is the difference between GPP and cellular ...
1.The time and NPP(net primary productivity)show negative dependence.不同区域草本植被恢复到特定盖度有明显的时间分异,所需时间与区域NPP(植被净第一性生产力)值呈负相关。 2.By means of Remote Sensing, the estimation of biomass and NPP mainly is on the basis of the models of solar energy effici...
Primary production may be synthetic, as when one or several types of articles, such as motor vehicles or footwear, are made from many types of raw material; or it may be analytic, as when various types of products are obtained from one type of raw material, as is the case in coking or...
The QZNPP model established here shows that, as temperature rises by degrees,net primary productivity(NPP) increases in the way of “S” curve; the rate of increasing is quickened by more precipitation. 青藏高原自然植被净初级生产量最小值为0,最大值为20t/hm2·a,全区平均为6。
Carbon balance is characterized by the net ecosystem productivity (NEP), the difference between net primary productivity (NPP) and the heterotrophic respiration, namely the decomposition of dead organic matter by soil microbes. 陆地生态系统的净生产力 (NEP)是生态系统净初级生产力 (NPP)和异氧呼吸 (...
Net Primary Productivity (NPP) is an important variable in the studies of the carbon cycle and in natural resource managements at regional and global scales. The Monteith type parametric model, C-FIX is used to estimate the NPP of the terrestrial ecosystems in western China (73°～112°E, ...
The time and NPP(net primary productivity)show negative dependence. 不同区域草本植被恢复到特定盖度有明显的时间分异,所需时间与区域NPP(植被净第一性生产力)值呈负相关。 2. By means of Remote Sensing, the estimation of biomass and NPP mainly is on the basis of the models of solar energy effi...
Net primary productivity and its control of the Middle Jurassic peatlands: An example from the southern Junggar coalfield 生产率Milankovitch煤田控制个例光谱分析地球物理早白垩纪The Jurassic is an important period of global coal formation, including the development of several large coalfields in central ...