The Chinese Terrestrial NPP Simulation from 1971 to 2000
Based on the meteorological station data we used an Atmosphere-Vegetation Interaction Model ( AVIM ) that has been validated at regional and global scales to estimate the NPP ( net primary production ) variation of Chinese terrestrial ecosystems from 1971 to 2000 and its responses to the climate change. The Chinese terrestrial NPP variation from 0 to 987. 67 gC·m-2·a-1, averaging from 340. 78 to 367. 38 gC·m-2·a-1, showing the increase tendency. For the different vegetation the tropical rain forest has the highest NPP values, average is 912. 94 gC·m-2·a-1, and the lowest is Sparse shrub, averaging 230. 99 gC·m-2·a-1 . Our simulation results are consistent with other results of the Chinese terrestrial vegetation. During the 30 years the NPP of vegetation distributing in the southern China, such as tropical rain forest, Broad leaf deciduous trees and broadleaf trees with ground cover decrease and the Needle leaf trees in the northeastern China increases because of the regional climate change. Comparing with the cropland variation under the natural condition owing adopting the modern agriculture technology the actual crop productivity increases significantly from 1971 to 1998, reflecting the human activity influence on the Chinese terrestrial NPP variation.
NETL
NSTL
万方数据
维普
