Journal ArticleDOI
Interannual variability of vegetation cover in the Chinese Heihe River Basin and its relation to meteorological parameters
Mingguo Ma,Veroustraete Frank +1 more
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In this article, a long time series (20 years) of Advanced Very High Resolution Radiometer (AVHRR) data with 8 km resolution is used to monitor vegetation cover change in the Heihe river basin.Abstract:
A long time series (20 years) of Advanced Very High Resolution Radiometer (AVHRR) data with 8 km resolution are used to monitor vegetation cover change in the Heihe river basin. Linear regression is used to characterize the trends in vegetation cover change. The yearly Maximum Normalized Difference Vegetation Index (MNDVI) in the Heihe river basin elicits an explicit inter‐annual change in the period 1982–2001. An increase in MNDVI occurs in mid‐basin oasis mainly, while a decrease in MNDVI is mainly observed in the mountainous and Alxa's natural oasis regions of the Heihe river basin. Precipitation is the major climate driving force for vegetation cover changes in the Heihe River Basin. The MNDVI is sensitive to precipitation and its sensitivity decreases with increasing precipitation. Precipitation has a higher effect on the mountainous regions' vegetation cover than on the oasis regions' vegetation cover. Precipitation also elicits a lag effect on the MNDVI with a phase of one year at a yearly scale ma...read more
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Quantitative assessment of the contributions of climate change and human activities on global grassland degradation
Chengcheng Gang,Wei Zhou,Yizhao Chen,Zhaoqi Wang,Zhengguo Sun,Jianlong Li,Jiaguo Qi,Inakwu O. A. Odeh +7 more
TL;DR: In this paper, a comprehensive method based on net primary productivity (NPP) was introduced to assess quantitatively the relative roles of climate change and human perturbations on worldwide grassland degradation from 2000 to 2010.
Journal ArticleDOI
Increasing terrestrial vegetation activity of ecological restoration program in the Beijing–Tianjin Sand Source Region of China
TL;DR: In this article, the authors assessed vegetation changes both temporally and spatially in the areas under the Beijing-Tianjin Sand Source Control Program from 2000 to 2010 with the Moderate-resolution Imaging Spectroradiometer (MODIS) monthly Normalized Difference Vegetation Index (NDVI) data and trend analysis method.
Journal ArticleDOI
Grassland degradation remote sensing monitoring and driving factors quantitative assessment in China from 1982 to 2010.
TL;DR: In this paper, the authors designed a method to assess the driving force of grassland degradation based on net primary productivity (NPP) and grass coverage, which is the difference between potential NPP and actual NPP.
Journal ArticleDOI
Response of vegetation activity dynamic to climatic change and ecological restoration programs in Inner Mongolia from 2000 to 2012
TL;DR: Wang et al. as discussed by the authors used 13 years (2000-2012) of both climatic data and MODIS NDVI data to assess the spatiotemporal vegetation dynamic and map areas of significant vegetation restoration and degradation.
Journal ArticleDOI
Response of wind erosion dynamics to climate change and human activity in Inner Mongolia, China during 1990 to 2015.
TL;DR: Timely monitoring based on multi-source data and highlighting the importance of positive human activities by increasing vegetation coverage for deserts, reducing grazing pressure on grasslands, establishing forests as windbreaks and optimizing crop planting rotations of farmlands can all act to reduce and control wind erosion.
References
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Journal ArticleDOI
Potentials and limits of vegetation indices for LAI and APAR assessment
Frédéric Baret,G. Guyot +1 more
TL;DR: In this article, the potentials and limits of different vegetation indices are discussed using the normalized difference (NDVI), perpendicular vegetation index (PVI), soil adjusted vegetation index, and transformed SAVI.
Journal ArticleDOI
Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999
Liming Zhou,Compton J. Tucker,Robert K. Kaufmann,Daniel Slayback,N.V. Shabanov,Ranga B. Myneni +5 more
TL;DR: In this paper, the authors present results from analyses of a recently developed satellite-sensed normalized difference vegetation index (NDVI) data set for the period July 1981 to December 1999, showing that about 61% of the total vegetated area between 40°N and 70°N in Eurasia shows a persistent increase in growing season NDVI over a broad contiguous swath of land from central Europe through Siberia to the Aldan plateau, where almost 58% (7.3×106 km2) is forests and woodlands.
Journal ArticleDOI
Global correlation analysis for NDVI and climatic variables and NDVI trends: 1982-1990
TL;DR: The relationship between the NDVI and climate variables was analyzed on a global scale using the Pathfinder AVHRR Land NDVI data set, and observed climate data for the period 1982-1990 as mentioned in this paper.
Journal ArticleDOI
Relation between interannual variations in satellite measures of northern forest greenness and climate between 1982 and 1999
Liming Zhou,Liming Zhou,Robert K. Kaufmann,Yuhong Tian,Yuhong Tian,Ranga B. Myneni,Compton J. Tucker +6 more
TL;DR: In this article, the relation between satellite-based measures of vegetation greenness and climate by land cover type at a regional scale (2° × 2° grid boxes) between 1982 and 1999 was analyzed.
Journal ArticleDOI
Estimation of carbon mass fluxes over Europe using the C-Fix model and Euroflux data
TL;DR: In this article, the results of the application of the C-Fix model within the frame of part of the objectives of the LTEEF-II project, as defined for the European continental scale, are presented.