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利用CASA模型估算我国植被净第一性生产力
引用本文:朴世龙,方精云,郭庆华.利用CASA模型估算我国植被净第一性生产力[J].植物生态学报,2001,25(5):603-608.
作者姓名:朴世龙  方精云  郭庆华
作者单位:北京大学城市与环境学系,北京大学地表过程分析与模拟教育部重点实验室
基金项目:国家重点基础研究发展规划项目(G2000046801)和国家自然科学基金(40024101)
摘    要:基于地理信息系统和卫星遥感应用技术,利用CASA模型估算了我国1997年植被净第一性生产力及其分布。结果表明:1997年我国植被净第一性生产力为1.95PgC,约是世界陆地植被年净第一性生产力的4.0%;我国植被净第一性生产力的主要分布趋势是从东南沿海向西北逐渐减小,其中海南岛南部、云南西南部、青藏高原东南部的热带雨林和季雨林地区植被年净第一性生产力最大,达900gC.m^2.a^-1以上,而西部塔克拉玛干沙漠地区植被年净第一性生产力最小,不足10gC.m^-2.a^-1。

关 键 词:CASA模型  光合有效辐射  光能转化率  净第

APPLICATION OF CASA MODEL TO THE ESTIMATION OF CHINESE TERRESTRIAL NET PRIMARY PRODUCTIVITY
PIAO Shi-Long,FANG Jing-Yun and GUO Qing-Hua.APPLICATION OF CASA MODEL TO THE ESTIMATION OF CHINESE TERRESTRIAL NET PRIMARY PRODUCTIVITY[J].Acta Phytoecologica Sinica,2001,25(5):603-608.
Authors:PIAO Shi-Long  FANG Jing-Yun and GUO Qing-Hua
Affiliation:Department of Urban & Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University
Abstract:The net primary production (NPP) of Chinese terrestrial vegetation in 1997 was estimated based on the CASA model. The geographic distribution of NPP was explored using GIS and remote sensing imagery (NOAA/AVHRR), together with spatial data on vegetation, climate, soil type and solar radiation. The model estimates China’s terrestrial NPP in 1997 as 1.95 Pg C, or about 4.0% of the worlds terrestrial total. NPP decreased from southeast China toward the northwest. Southern Hainan Island, Southwestern Yunnan and Southeastern Tibet showed large NPP values, with the value exceeding 900 g C?m–2?a–1, whereas the Takelamagan desert located in western China had very small values-less than 10 g C?m–2?a–1.
Keywords:CASA model  Photosynthetically active radiation(PAR)  Light utilization efficiency  Net primary productivity (NPP)  NDVI
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