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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   +4 more
openaire   +1 more source

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   +3 more
openaire   +1 more source

Spatial variability in rates of net primary production (NPP) and onset of the spring bloom in Greenland shelf waters

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
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   +8 more
openaire   +1 more source

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   +3 more
openaire   +1 more source

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   +6 more
openaire   +1 more source

Net Primary Productivity (NPP) of Oasis Changes in Trends in Xinjiang and Responses to Climate Change Analysis in 1981-2000

Proceedings of SPIE, 2010
Using the Xinjiang NPP data simulated by GLOPEM from 1981 to 2000, combining with the corresponding meteorological data, vegetation data and LUCC, the spatio-temporal changes of NPP and climate factors in 1981-2000 were analyzed. The correlation between climate factors and NPP was also analyzed.
Xiao-ming Cao   +3 more
openaire   +1 more source

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   +5 more
openaire   +1 more source

A New Model of Grassland Net Primary Productivity (NPP) Based on the Integrated Orderly Classification System of Grassland

2009 Sixth International Conference on Fuzzy Systems and Knowledge Discovery, 2009
The natural grasslands play a significant but poorly recognized role in the global carbon cycle. Research on NPP of grassland ecosystems is and will continue to be important. In this respect, climate–vegetation models have been drawing much attention and widely applied internationally owing to its simplicity.
openaire   +1 more source

Effects of teleconnection indices on net primary production (NPP) in bioclimatic zones of Iran

Arabian Journal of Geosciences, 2023
Seyed Morteza Araghi Shahri   +4 more
openaire   +1 more source

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