基于Landsat TM数据的长白山西部NPP估算

[目的]对1999和2001年长白山西部NPP进行估算。[方法]基于Landsat TM数据,运用遥感模型,对长白山西部1999和2001年同一时相的植被进行NPP估算。[结果]1999年,长白山西部NPP最大值是134.408 3 t(DW)/(hm2·a),最小值是7.885 2t(DW)/(hm2·a);2001年,NPP最大值是86.372 3 t(DW)/(hm2·a),最小值是17.566 3 t(DW)/(hm2·a)。长白山西部NPP的最大值主要集中在图们市、延吉市、龙井市、和龙市山区。1999年的NPP分布范围明显比2001年大,同时,1999年的NPP值普遍比2001年高。[结论]大尺度陆地生态系统NPP的测定研究需要加强。

NPP Estimation in West Changbai Mountain Based on Landsat TM Data

[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 conducted.[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 NPP in 1999 was large than that in 2001,and NPP value in 1999 was bigger than that in 2001.[Conclusion] It needed strengthening measurement and research of NPP of the large-scale terrestrial ecosystem.