Journal of Ecology and Rural Environment ›› 2017, Vol. 33 ›› Issue (1): 38-46.doi: 10.11934/j.issn.1673-4831.2017.01.006

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Key Ecosystem Services and Their Regional Flow in Zhangjiakou-Chengde Region

LI Qing-xu1,2, ZHANG Biao1, SHI Yun-ting1,2, ZHENG Hao1   

  1. 1. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-09-26 Online:2017-01-25 Published:2017-01-22

Abstract:

The study to evaluate regional ecosystem services and their radiation effects may help exposit the features of integrity and correlativity of the ecological-economical-societal complex system of the studied region. Based on the 2013 land-sate remote-sensing images of the Zhangjiakou-Chengde Region and the eco-service valuation method, the composition of the surface land cover and key ecosystem services of the region and their radiation effects on Beijing have been analyzed and evaluated. Results show that about 97% of the land in this region is covered with forests, grasslands and farmlands, which are the mainstay of the ecological protective screen for the Beijing-Tianjin-Hebei Metropolitan Region. The natural ecosystem of the region may provide key ecosystem services, such as water conservation, wind and sand control, carbon sequestration and oxygen release, valuated as high as 189.5 billion yuan RMB in 2013. The high-valued eco-zones are distributed mainly in Chengde, of which the land is mostly covered with forests and grasslands and the southeastern part of Zhangjiakou. Every year, nearly 21% of the key ecosystem services of the Zhangjiakou-Chengde region may render are radiated into Beijing, via water and wind. Within the region, Huailai, Chicheng, Xuanhua, Zhuolu, Chongli and Guyuan counties are more closely related to the ecosystem services of Beijing as major contributors. All the findings of the study may serve as certain valuable reference for future efforts to exposit ecosystem integrity of the Beijing-Tianjin-Hebei Metropolitan Region and to explore scientific mechanisms for eco-remediation and cooperation of the Region.

Key words: ecosystem service, regional correlation, land cover, Zhangjiakou-Chengde region

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