Net primary productivity (NPP) estimation is an important study field of global change and terrestrial ecosystems (GCTE).
植被净初级生产力(NPP)研究是全球变化与陆地生态系统的核心内容之一。
The paper applied the information diffusion model of non-parametric estimation to project the level of productivity risks for cereals, rice, corn and wheat at major grain-producing area.
本文采用非参数估计的信息扩散模型测算了我国粮食主产区水稻、玉米、小麦和棉花产量损失风险水平。
This technique provides necessary means in the studies of the productivity of such low permeability rock formations, reservoir evaluation, active reserve estimation and resource estimation.
为研究低渗透油层产能状况，评价油层以及预测控制储量和远景储量，提供必要的研究手段和方法。
This paper introduces the application of rock pyrolysis technique in Hailaer Basin, especially in light oil reservoir identification, oil property determination and productivity estimation.
重点阐述了岩石热解技术在海拉尔盆地的轻质油油层的识别、原油性质的判别、产能估算等方面的应用效果，为岩石热解技术在海拉尔盆地的应用提供了经验。
This paper gives the purposes and necessity of estimation of forest system productivity;
为此提出了对林业系统生产力量化的必要性、目的和意义；
This paper gives the purposes and necessity of estimation of forest system productivity;
为此提出了对林业系统生产力量化的必要性、目的和意义；
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