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半干旱区社会-生态系统未来情景分析——以甘肃省榆中县北部山区为例

王俊1,2;张向龙1;杨新军1;刘文兆2;汪兴玉1   

  1. 1西北大学城市与资源学系, 西安 710127;2中国科学院水利部水土保持研究所, 陕西杨凌 712100
  • 收稿日期:2008-10-09 修回日期:1900-01-01 出版日期:2009-06-10 发布日期:2009-06-10

Future scenarios analysis of social-ecological system in semiarid areas of Northwest China: A case study of northern highlands in Yuzhong County of Gansu Province.

WANG Jun1,2;ZHANG Xiang-long1;YANG Xin-jun1;LIU Wen-zhao2;WANG Xing-yu1   

  1. 1Department of Urban and Resource Science, Northwest University, Xi’an 710127, China;2Institute of Soil and Water Conservation, Ministry of Water Resources, Chinese Academy of Sciences, Yangling 712100, Shaanxi, China
  • Received:2008-10-09 Revised:1900-01-01 Online:2009-06-10 Published:2009-06-10

摘要: 以甘肃省榆中县北部山区为例,运用情景分析法对半干旱区社会-生态系统未来情景进行了分析。在相关利益主体情景访谈的基础上,确定了干旱扰动下的社会-生态系统未来变化的情景主题,通过系统驱动力分析确定了情景逻辑空间,选取了表征社会-生态系统未来发展的关键因素和关键事件,运用交叉影响分析计算出由关键事件组合的情景概率。结果表明,概率最大的3种情景内涵从属于关键驱动力所确定的情景逻辑空间,并由此展开了榆中北部山区社会-生态系统在2020年的3个发展情景,提出了系统向理想情景发展的决策建议。

关键词: CO2浓度, 根际土壤, 细菌, 真菌, 放线菌

Abstract: With the northern highlands in Yuzhong County of Gansu Province as a case, the f uture scenarios of the social-ecological system in semiarid areas of N orthwest China were analyzed by the method of scenario analysis. On the basis of in situ interviews with farmers, government officials, and academic experts, th e scenario logistic framework were identified by analyzing the driving forces to the system. The key factors and key events representing the system’s future wer e selected, and the future scenarios and their probabilities were constructed an d calculated by using cross-impact analysis. Three scenarios of the social-eco logical system with the maximum probability were congruent with the logical fram ework, and some decision-making suggestions for the ideal scenarios development of the social-ecological system in the semiarid areas in 2020 were put forward.

Key words: CO2 concentration, Rhizosphere soil, Bacteria, Fungi, Actinomyces