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Red and photographic infrared linear combinations for monitoring vegetation
The relationships between various linear combinations of red and photographic infrared radiances and vegetation parameters are investigated. In situ spectrometers are used to measure theExpand
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Using the satellite-derived NDVI to assess ecological responses to environmental change.
Assessing how environmental changes affect the distribution and dynamics of vegetation and animal populations is becoming increasingly important for terrestrial ecologists to enable betterExpand
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An extended AVHRR 8‐km NDVI dataset compatible with MODIS and SPOT vegetation NDVI data
Daily daytime Advanced Very High Resolution Radiometer (AVHRR) 4‐km global area coverage data have been processed to produce a Normalized Difference Vegetation Index (NDVI) 8‐km equal‐area datasetExpand
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Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
Recent climatic changes have enhanced plant growth in northern mid-latitudes and high latitudes. However, a comprehensive analysis of the impact of global climatic changes on vegetation productivityExpand
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Increased plant growth in the northern high latitudes from 1981 to 1991
Variations in the amplitude and timing of the seasonal cycle of atmospheric CO2 have shown an association with surface air temperature consistent with the hypothesis that warmer temperatures haveExpand
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Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999
The northern high latitudes have warmed by about 0.8°C since the early 1970s, but not all areas have warmed uniformly [Hansen et al., 1999]. There is warming in most of Eurasia, but the warming rateExpand
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Fifty years of deforestation and forest fragmentation in Madagascar
Tropical deforestation is a key contributor to species extinction and climate change, yet the extent of tropical forests and their rate of destruction and degradation through fragmentation remainExpand
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Evidence for a significant urbanization effect on climate in China.
China has experienced rapid urbanization and dramatic economic growth since its reform process started in late 1978. In this article, we present evidence for a significant urbanization effect onExpand
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Tropical Deforestation and Habitat Fragmentation in the Amazon: Satellite Data from 1978 to 1988
Landsat satellite imagery covering the entire forested portion of the Brazilian Amazon Basin was used to measure, for 1978 and 1988, deforestation, fragmented forest, defined as areas less than 100Expand
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Recent trends in vegetation dynamics in the African Sahel and their relationship to climate
Contrary to assertions of widespread irreversible desertification in the African Sahel, a recent increase in seasonal greenness over large areas of the Sahel has been observed, which has beenExpand
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