Chin J Plan Ecolo ›› 2001, Vol. 25 ›› Issue (5): 603-608.

Special Issue: 青藏高原植物生态学:生态系统生态学

• Research Articles • Previous Articles     Next Articles

Application of CASA Model to the Estimation of Chinese Terrestrial Net Primary Productivity

PIAO Shi-Long, FANG Jing-Yun and GUO Qing-Hua   

  1. Department of Urban & Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University
  • Published:2016-05-11
  • Contact: ZHANG Xiao-Quan

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.