NPP公式清晰地表明，它是植物生长与消耗的平衡，对异养生物（如动物和人类）的生存资源至关重要。NPP的估算方法多样，包括Miami模型、Thornthwaite纪念模型、Chikugo模型，以及复杂的生态系统过程模型如TEM、CASA和生物地球化学循环BGC模型。进一步深入，我们有净生态系统生产力（Net Ecosystem Productivity, NEP）...
The MODIS Gross Primary Production (GPP) CONUS dataset estimates GPP using MODIS Surface Reflectance for CONUS. GPP is the amount of carbon captured by plants in an ecosystem and is an essential component in the calculations of Net Primary Production (NPP). GPP is calculated using the MOD17algo...
Estimates of daily gross primary production (GPP) and annual net primary production (NPP) at the 1 km spatial resolution are now produced operationally for the global terrestrial surface using imagery from the MODIS (Moderate Resolution Imaging Spectroradiometer) sensor. Ecosystem-level measurements of ...
a global scale. Products are Gross Primary Production (GPP), Net Primary Production (NPP). It is based on a modified version of the Farquhar approach (Haxeltine and Prentice 1996, Farquhar et al. 1980). Where possible, it uses vectorization and parallelization and dynamically downloads latest ...
Although there have been many models based on light use efficiency and remote sensing data for simulating terrestrial ecosystem GPP, those models depend much on meteorological data; use of different sources of meteorological datasets often results in divergent outputs, leading to uncertainties in the ...
The NPP/GPP ratio showed a decreasing trend along temperature when it was between –20 °C and 10 °C, and showed an increasing trend along rising temperature when it was between –10 °C and 20 °C. Within each ecosystem, the NPP/GPP ratio revealed a similar trend to the global trend...
2009. Global pattern of NPP to GPP ratio derived from MODIS data: effects of ecosystem type, geographical location and climate. Global Ecology and Biogeography 18: 280-290.Zhang Y,Xu M,Chen H,et al.Global pattern of NPP to3GPP ratio derived from MODIS data:Effects of ecosystemtype,...
2009. Global pattern of NPP to GPP ratio derived from MODIS data: effects of ecosystem type, geographical location and climate. Glob. Ecol. Biogeogr. 18, 280A290.Zhang, Y., M. Xu, H. Chen, and J. Adams (2009), Global pattern of NPP to GPP ratio derived from MODIS data: Effects ...
草地生态系统碳储量及碳汇量的空间分布格局及其变化趋势的空间分布均呈现明显的空间差异性.(5)MODIS GPP/NPP数据能够支撑较大尺度草地生态系统碳储量及碳汇量格局与变化趋势分析,较传统方法更为便捷高效.%Carbon cycling of terrestrial ecosystem has become the research front and focus of global change and geo...
Detailed biometric data can be used to estimate Net Primary Productivity (NPP), i.e., the amount of C fixed by GPP after excluding autotrophic respiration [39]. Such data can also be integrated with photosynthetic and respiration measurements, to ultimately infer GPP and NEP [40]. In this ...