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This study aimed to characterize and analyze, based on MOD17 data, the spatio-temporal dynamics of GPP in the northern region of Para state, Brazilian Amazon, during a 6-year period (2001 to 2006). The study area encompasses two river basins (Upper Tapajos and Curua-Una) and covers ∼74,190 km2. The spatial variation of GPP was primarily related to the larger presence of forested areas in Upper Tapajos...
A trans-provincial river flow diversion project has been implemented in the Heihe River basin since 2000 to stop the further deterioration of its downstream Ejina natural oasis. An emergent three-year water saving project were was also carried out during 2001 to 2003 as to prevent the downstream Ejina oasis from further withering. In this paper, desertification degree and net primary productivity...
Net primary production (NPP) is the net carbon stored as new plant material in an ecosystem which supplies humans with various foods, fuels, fibres and construction materials. Accurately revealing the spatial patterns and temporal dynamics of NPP of terrestrial ecosystems is essential for understanding the carbon cycle of the terrestrial biosphere. Changbai Mountain area is the most important natural...
As one of the indicators of the essential ecological characteristics of the sea area, the temporal and spatial variations of ocean chlorophyll-a is an important index to measure the distribution of phytoplankton, marine primary productivity and eutrophication status. Accurately detecting the temporal-spatial distributions of ocean chlorophyll-a with the remote sensing technology has significant importance...
Based on the remote sensing data of GOME and SCIMACHY, the paper analyzes the variation trend, temporal and spatial characteristics of NO2 column density from Apr. 1996 to Nov. 2009 in Yangtze Delta region. Besides that, seasonal analyses are also taken. In this session, a whole year is divided into dry season and rainy season. In spatial analyses, the paper emphasizes on the difference between NO...
A ten-day interval of satellite data (NOAA/AVHRR) between 1981 and 2001 were used to investigate the Vegetation dynamic in Northern-Tibet Plateau (NTP), China. The relationships between NDVI and climatic parameters were analyzed in six counties of NTP. And the human activities factors such as population also tested in this study. The result shown that the prominent increase and decrease of NDVI occurred...
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