Results 151 to 160 of about 3,780 (184)
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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 +2 more
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Substantial research seeks to improve estimates of ecosystem processes and fluxes at a range of scales, notably from the stand scale (
Peter B Reich +2 more
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Impacts of seasonal climate on net primary productivity (NPP) in Xinjiang, 1981-2000
SPIE Proceedings, 2004This study presented the temporal and spatial variation patterns of the seasonal NPP, temperature and precipitation. The NPP simulated by using the GLO-PEM. A semi-mechanistic model of plant photosynthesis and respiration driven entirely by the satellite observations was combined with climate data in Xinjiang of China over the past 20 years to study ...
Wei Gao +6 more
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Biometric-Based Estimations of Net Primary Production (NPP) in Forest Ecosystems
2016Net 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 +4 more
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Progress in Oceanography, 2021
Abstract Greenland extends from 60° to 83° N, with 80% of its land mass covered by the Greenland Ice Sheet (GrIS). This extensive latitudinal gradient is associated with concomitant environmental gradients that impact the biogeochemical properties of its coastal waters.
Maria Vernet +6 more
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Abstract Greenland extends from 60° to 83° N, with 80% of its land mass covered by the Greenland Ice Sheet (GrIS). This extensive latitudinal gradient is associated with concomitant environmental gradients that impact the biogeochemical properties of its coastal waters.
Maria Vernet +6 more
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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).
Alberte Bondeau, Jörg Kaduk
exaly +3 more sources
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).
Alberte Bondeau, Jörg Kaduk
exaly +3 more sources
Responses of net primary productivity (NPP) in Xinjiang to climate changes from 1981-2000
SPIE Proceedings, 2004In 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 +8 more
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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.
Shouzhi Chang, Dehua Mao
exaly +2 more sources
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.
Shouzhi Chang, Dehua Mao
exaly +2 more sources
Effects of landcover changes on net primary production (NPP)-based exergy in south-central of Chile
Applied Geography, 2019Abstract 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 +3 more
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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 +6 more
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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 +6 more
openaire +1 more source
Ecological Modelling, 1999
Abstract This study reports on the use of the process-based ecosystem model CENTURY 4.0 to investigate the patterns of net primary productivity (NPP) along a transect across the boreal forests of central Canada and the influence of climate change, CO 2 fertilization and changing fire disturbance regimes on changes in NPP over time. Simulated NPP was
Michael J Apps
exaly +2 more sources
Abstract This study reports on the use of the process-based ecosystem model CENTURY 4.0 to investigate the patterns of net primary productivity (NPP) along a transect across the boreal forests of central Canada and the influence of climate change, CO 2 fertilization and changing fire disturbance regimes on changes in NPP over time. Simulated NPP was
Michael J Apps
exaly +2 more sources