The Influences of Drought and Land-Cover Conversion on Inter-Annual Variation of NPP in the Three-North Shelterbelt Program Zone of China Based on MODIS Data

Terrestrial ecosystems greatly contribute to carbon (C) emission reduction targets through photosynthetic C uptake.Net primary production (NPP) represents the amount of atmospheric C fixed by plants and accumulated as biomass. The Three-North Shelterbelt Program (TNSP) zone accounts for more than 40...

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Bibliographic Details
Published in:PloS one 2016-06, Vol.11 (6), p.e0158173-e0158173
Main Authors: Peng, Dailiang, Wu, Chaoyang, Zhang, Bing, Huete, Alfredo, Zhang, Xiaoyang, Sun, Rui, Lei, Liping, Huang, Wenjing, Liu, Liangyun, Liu, Xinjie, Li, Jun, Luo, Shezhou, Fang, Bin
Format: Article
Language:English
Subjects:
Algorithms
Annual variations
Anthropogenic factors
Biology
Biology and Life Sciences
Biomass
Carbon - analysis
China
Climate
Climate and human activity
Climate change
Conversion
Correlation analysis
Decomposition
Drought
Droughts
Earth science
Earth Sciences
Ecological restoration
Ecology and Environmental Sciences
Ecosystem
Ecosystem biology
Emission analysis
Emission control
Emissions
Emissions control
Environmental assessment
Environmental changes
Environmental restoration
Evapotranspiration
Fossil fuels
Grasslands
Human Activities
Human influences
Humans
Interannual variability
Laboratories
Land cover
Land use
Models, Theoretical
MODIS
People and Places
Photosynthesis
Plants (botany)
Pollution control
Precipitation
Primary production
Rainfall
Remote sensing
Reproducibility of Results
Restoration
Shelterbelts
Terrestrial ecosystems
Terrestrial environments
Variability
Vegetation
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Summary:Terrestrial ecosystems greatly contribute to carbon (C) emission reduction targets through photosynthetic C uptake.Net primary production (NPP) represents the amount of atmospheric C fixed by plants and accumulated as biomass. The Three-North Shelterbelt Program (TNSP) zone accounts for more than 40% of China's landmass. This zone has been the scene of several large-scale ecological restoration efforts since the late 1990s, and has witnessed significant changes in climate and human activities.Assessing the relative roles of different causal factors on NPP variability in TNSP zone is very important for establishing reasonable local policies to realize the emission reduction targets for central government. In this study, we examined the relative roles of drought and land cover conversion(LCC) on inter-annual changes of TNSP zone for 2001-2010. We applied integrated correlation and decomposition analyses to a Standardized Evapotranspiration Index (SPEI) and MODIS land cover dataset. Our results show that the 10-year average NPP within this region was about 420 Tg C. We found that about 60% of total annual NPP over the study area was significantly correlated with SPEI (p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0158173