摘要
[ Objective] The research aimed to estimate NPP in west Changbai Mountain in 1999 and 2001. [ Method] Based on Landsat TM data, by using remote sensing model, NPP estimations of the vegetations at the same time phase of 1999 and 2001 in west Changbai Mountain were con- ducted. [ Result] In 1999, the maximum of NPP in west Changbai Mountain was 134.408 3 t（ DW）/（ hm2 · a）, and the minimum was 7. 885 2 t （ DW）/（hm2 · a）. In 2001, the maximum of NPP in west Changbai Mountain was 86.372 3 t（ DW）/（hm2 · a）, and the minimum was 17.566 3 t （ DW）/（ hm2 · a）. The maximum of NPP in west Changbai Mountain mainly concentrated in the mountain areas of Tumen City, Yanji City, Longjing City and Helong City. Distribution range of the NPP in 1999 was larger than that in 2001, and NPP value in 1999 was bigger than that in 2001. [ Conclusion] We needed strengthening measurement and research of the NPP for large-scale terrestrial ecosystem.
[ Objective] The research aimed to estimate NPP in west Changbai Mountain in 1999 and 2001. [ Method] Based on Landsat TM data, by using remote sensing model, NPP estimations of the vegetations at the same time phase of 1999 and 2001 in west Changbai Mountain were con- ducted. [ Result] In 1999, the maximum of NPP in west Changbai Mountain was 134.408 3 t（ DW）/（ hm2 · a）, and the minimum was 7. 885 2 t （ DW）/（hm2 · a）. In 2001, the maximum of NPP in west Changbai Mountain was 86.372 3 t（ DW）/（hm2 · a）, and the minimum was 17.566 3 t （ DW）/（ hm2 · a）. The maximum of NPP in west Changbai Mountain mainly concentrated in the mountain areas of Tumen City, Yanji City, Longjing City and Helong City. Distribution range of the NPP in 1999 was larger than that in 2001, and NPP value in 1999 was bigger than that in 2001. [ Conclusion] We needed strengthening measurement and research of the NPP for large-scale terrestrial ecosystem.
