Supported by the National Natural Science Foundation of China(40876010);the "Strategic Priority Research Program-Climate Change:Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA01020304);the LASG State Key Laboratory Special Fund,China,the Natural Science Foundation of Zhejiang Province,China(Y6110502);the Natural Science Foundation of Jiansu Province(BK2011042);the Natural Science Foundation from the Education Bureau of Anhui Province,China(KJ2011A135);the Foundation of the Education Department of Fujian Province(JA10288)