Results 191 to 200 of about 19,149 (228)

Estimation and influencing factors analysis of vegetation net primary productivity (NPP) in Northeast China

2010 International Conference on Mechanic Automation and Control Engineering, 2010
The Northeast China as the sensitive area of global climate change, there was important significance for regional and even global terrestrial ecosystem carbon cycle analyzing vegetation net primary productivity (NPP) and the relationship with temperature and precipitation.
null Ling Luo, Zongming Wang, null Dehua Mao, null Shouzhi Chang   +3 more
openaire   +1 more source

Biometric-Based Estimations of Net Primary Production (NPP) in Forest Ecosystems

2016
Net primary production (NPP) refers to the net amount of the carbon and energy fixed by green plants through photosynthetic activity. Estimates of NPP are of fundamental human importance, because food supply is predominantly dependent on plant productivity.
Toshiyuki Ohtsuka, Nobuko Saigusa, Yasuo Iimura, Hiroyuki Muraoka, Hiroshi Koizumi   +4 more
openaire   +1 more source

Responses of net primary productivity (NPP) in Xinjiang to climate changes from 1981-2000

SPIE Proceedings, 2004
In the last several decades, the responses of vegetation to global changes at regional and global scales have been studied with many mathematical models primarily driven by point meteorological observations. In this study, the net primary productivity (NPP) of Xinjiang, China is simulated using the GLObal Production Efficiency Model (GLO-PEM) which is ...
Wei Gao, Zhiqiang Gao, Xiaoling Pan, James R. Slusser, Mingkui Cao, Jiaguo Qi, Jie Zhang, Xiwu Zhan, Yingjun Ma   +8 more
openaire   +1 more source

The role of climate variability in the inter-annual variation of terrestrial net primary production (NPP)

Science of The Total Environment, 2004
Eleven years data set of global net primary production (NPP) and long-term climatic and land use data were used to explore the patterns of inter-annual variability of terrestrial NPP in relation to potential causal factors. Global anomalies in temperature, precipitation and cloud cover were found to significantly contribute in different ways and ...
M A A, Mohamed, I S, Babiker, Z M, Chen, K, Ikeda, K, Ohta, K, Kato   +5 more
openaire   +2 more sources

Landscape heterogeneity and net primary productivity (NPP) of mountain-oasis-desert ecosystems in western China

SPIE Proceedings, 2004
This study was conducted to develop an appropriate assessment technique to define impact of mountain-desert-oasis ecosystem on net primary productivity (NPP) in northern foothills of Tianshan Mountains. Geographic Information System (GIS) was used to estimate land use/land cover of the mountain, desert and oasis zones.
Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Wei Gao, Suling Zhao, Qingdong Shi, Guanghui Lu   +6 more
openaire   +1 more source

An Approach to Spatially Distributed Modeling of Net Primary Production (NPP) at the Landscape Scale and Its Application in Validation of EOS NPP Products

Remote Sensing of Environment, 1999
Substantial research seeks to improve estimates of ecosystem processes and fluxes at a range of scales, notably from the stand scale (
Peter B Reich, David P Turner, Paul Bolstad   +2 more
openaire   +1 more source

Comparing global models of terrestrial net primary productivity (NPP): comparison of NPP to climate and the Normalized Difference Vegetation Index (NDVI)

Global Change Biology, 1999
SummaryTo analyse the broad‐scale behaviour of 15 global models of the terrestrial biosphere, we evaluated the sensitivity of simulated net primary productivity (NPP) to spatial and seasonal variations in precipitation, temperature and solar radiation, and to the Normalized Difference Vegetation Index (NDVI).
Schloss, Annette L., Kicklighter, David W., Kaduk, Jörg, Wittenberg, Uwe, Participants of \\"Potsdam '95\\"   +4 more
openaire   +2 more sources

Effects of landcover changes on net primary production (NPP)-based exergy in south-central of Chile

Applied Geography, 2019
Abstract A new indicator for the accounting effect of landcover is defined based on the integration of thermodynamics (exergy analysis) and ecology (net primary production (NPP)). The indicator NPPEX allows quantifying and assessing the impacts of landuse changes, in spatial and temporally dimensions.
Yenisleidy Martínez Martínez, Dominique Goecke Coll, Mauricio Aguayo, Yannay Casas-Ledón   +3 more
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Comparing global models of terrestrial net primary productivity (NPP): global pattern and differentiation by major biomes

Global Change Biology, 1999
SummaryAnnual and seasonal net primary productivity estimates (NPP) of 15 global models across latitudinal zones and biomes are compared. The models simulated NPP for contemporary climate using common, spatially explicit data sets for climate, soil texture, and normalized difference vegetation index (NDVI).
Kicklighter, D., Bondeau, Alberte, Schloss, A., Kaduk, J., Mcguire, A., Intercomparison, The. Participants Of. The. Potsdam   +5 more
openaire   +2 more sources

The change of global terrestrial ecosystem net primary productivity (NPP) and its response to climate change in CMIP5

Theoretical and Applied Climatology, 2014
Using global terrestrial ecosystem observation and proxy data for net primary productivity (NPP), leaf area index (LAI), and climate data, we compared simulated NPP, LAI, and major climatic factors and explored the relationship between their variations in historical scenarios of ten Coupled Model Intercomparison Project (CMIP5) models.
Suosuo Li, Shihua Lü, Yongjun Zhang, Yuanpu Liu, Yanhong Gao, Yinhuan Ao   +5 more
openaire   +1 more source