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- W2389415045 abstract "As the largest nature reserve of China,Three River Sources Nature Reserve plays an important role in protecting ecological security.The change of NPP,which is a vital indicator for ecosystems,is still concerned by us.We utilize NPP,which is simulated by GLOPEM model,to calculate the difference of NPP between both inside and outside of the protected areas.We define the buffer region of a protected area as the outside.The outsides we defined are used to calculate mean value of NPP to subtract from the mean NPP of insides.Also we calculate the difference in three periods,i.e.1988-2008,1988-2004 and 2004-2008.If the differences of insides and outsides in 1988-2004 are lower than the value in 2004-2008,we define it as turning better,especially when the value in 1988-2004 is negative but is positive in 2004-2008,we call it notable better.After that,we find that there are 13 protected areas better and 2 notable better than before,and only 5 protected areas become worse than before.In the 5 regions there is a snow-mountain protected area,although the result in this region is worse than before,it does not mean the ecosystem is worse,in contrary it means the environment is turning better because of the spread of main ecosystem decrease the NPP.We conclude that in this region,since the implementation of ecosystem engineering,NPP rise obviously with the rate of 0.47 gC m-2 yr-1,and most protected areas are turning better." @default.
- W2389415045 created "2016-06-24" @default.
- W2389415045 creator A5048725134 @default.
- W2389415045 date "2009-01-01" @default.
- W2389415045 modified "2023-09-23" @default.
- W2389415045 title "A Simulation on Changes in Vegetation Productivity in Three River Sources Nature Reserve,Qinghai Province over Past 20 Years" @default.
- W2389415045 hasPublicationYear "2009" @default.
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