Biodiv Sci ›› 2016, Vol. 24 ›› Issue (2): 127-135.  DOI: 10.17520/biods.2015082

Special Issue: 生物多样性与生态系统功能 青藏高原生物多样性与生态安全

• Original Papers: Plant Diversity • Previous Articles     Next Articles

Effects of ecological engineering on net primary production in the Chang Tang and Sanjiangyuan national nature reserves on the Tibetan Plateau

Wei Qi1,2, Wanqi Bai1, Yili Zhang1,2,*(), Xue Wu1,2, Lanhui Li1,2, Mingjun Ding1,3, Caiping Zhou1   

  1. 1 Key Laboratory of Land Surface Pattern and Simulation of CAS, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101
    2 University of Chinese Academy of Sciences, Beijing 100049
    3 Key Laboratory of Poyang Lake Wetland and Watershed Research of Ministry of Education, School of Geography and Environment, Jiangxi Normal University, Nanchang 330022;
  • Received:2015-04-01 Accepted:2015-09-29 Online:2016-02-20 Published:2016-03-03
  • Contact: Zhang Yili


Long term series of remotely sensed imagery of net primary production (NPP) data could reflect ecosystem health. In this study, we employed NPP to evaluate the effects of ecological engineering (nature reserve and new ecological engineering in 2004 or 2005 techniques) by the sampling area comparison method in the Chang Tang and Sanjiangyuan national nature reserves on the Tibetan Plateau. The results showed that: (1) among the 10 pairs of sampling areas, annual NPP of 9 pairs tended to increase between 1982 and 2009; (2) the new ecological engineering techniques improved the effectiveness of ecosystem conservation, with NPP in 8 pairs of sampling areas increasing faster than before; and (3) among all alpine grassland types, the new ecological engineering techniques remarkably improved the effectiveness of conserving the meadows.

Key words: ecological engineering, nature reserve, net primary production, Sanjiangyuan, Chang Tang, sampling area comparison method