Advances in Earth Science ›› 2007, Vol. 22 ›› Issue (8): 851-856. doi: 10.11867/j.issn.1001-8166.2007.08.0851

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Arctic Carbon Sink in Global Change: Present and Future

ZHANG Yong-min 1, ZHAO Shi-dong 2   

  1. 1.Department of Resources and Environmental Sciences, Henan University of Finance and Economics, Zhengzhou 450002, China; 2.Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2007-07-04 Revised:2007-07-10 Online:2007-08-10 Published:2007-08-10

ZHANG Yong-mim, ZHAO Shi-dong. Arctic Carbon Sink in Global Change: Present and Future[J]. Advances in Earth Science, 2007, 22(8): 851-856.

Based on the findings of the Sub-global Assessments Working Group—Ecosystems and Human Welling-Being: Multiscale Assessments, the following contributions of multiscale assessments can be identified: ① Ecosystem services are important for many dimensions of human well-being, some of which are best observed at sub-global scales;② The condition and trends of many ecosystem services, observed at multiple scales, are declining in many locations worldwide;③ Identifying effective response options that enhance human well-being and conserve ecosystem services requires consideration of drivers at different scales and involvement of actors at the appropriate scales;④ Local communities are not mere spectators, but active managers of the capacity of ecosystems to deliver services. In addition, the following lessons can be learned for future assessments: ① The MA conceptual framework served as a valuable tool and initial point of reference, but had to be adapted by some sub-global assessments;② Multiscale assessments provide significant benefits, but they pose process and analytical challenges, are resource-and time-intensive, and, depending on assessment goals, may not always be necessary;③ For success, a sub-global assessment requires understanding of the context, adequate resources, champions and actively engaged users, and a governance structure able to manage competing needs;④ It is necessary for future assessments to conduct many tradeoffs and considerations.

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