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- W2385890289 abstract "A remote sensing model for grass aboveground dry matter biomass monitoring was constructed from the MODIS vegetation indices in 2006—2008 and with dry matter information from field survey during the same time,to estimate the grassland biomass(both aboveground and underground) during 2006—2008 in Gannan Prefecture based on the average root-shoot ratio of seven types of grassland in several years.The simulation was performed and compared under various temporal scale;the map of spatial distribution of grassland biomass in Gannan Prefecture was mapped;the characteristics of grassland biomass in different regions,altitudes and grassland types were analyzed;and the annual change of grassland biomass in Gannan Prefecture was discussed.The result shows that grassland biomass during 2006—2008 were 3.784×10~(13), 3.527×10~(13) and 3.26×10~(13) g,respectively;there is a trend in the spatial pattern of grassland biomass,which is a decreasing from west to east;if the contamination from noise is not eliminated,the result of simulation under month-based temporal scale is better;the maximum yield occurrs between the altitude of 3 000～4 000 m in Gannan Prefecture,accounting for 84.69%of the total grassland;grass biomass in Gannan Prefecture was decreasing from 2006 to 2008,with an average annual reduction rate of 97.91 g/(m~2·a)." @default.
- W2385890289 created "2016-06-24" @default.
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- W2385890289 date "2009-01-01" @default.
- W2385890289 modified "2023-09-26" @default.
- W2385890289 title "Grassland biomass based on MODIS vegetation index in Gannan Prefecture" @default.
- W2385890289 hasPublicationYear "2009" @default.
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