草业学报2017，Vol.26Issue(4)：1-14,14.DOI:10.11686/cyxb2016186
基于能值生态足迹模型的青藏高原东部高寒牧区可持续发展研究
Sustainable development of the alpine pastoral region in the eastern Tibetan Plateau based on the emergy ecological footprint model
摘要
Abstract
Sustainable development is a shared goal of all countries around the world.The assessment of regional sustainability is becoming an important theoretical basis for policy making.Gannan Tibetan Autonomous Prefecture is a typical alpine pastoral region in China.In this region,sustainable development has become a major issue with the ongoing development of animal husbandry.Therefore,we analyzed the sustainable development of counties and cities in Gannan from 2005 to 2013 based on a modified emergy ecological footprint model.Regional emergy densities are the key of the modified model,which was used to quantify the ecological carrying capacity and the ecological footprint.Therefore,this model can truly reflect the supply capacity of ecosystems and human resource consumption in these areas.The results indicated that livestock products accounted for the largest proportion of the ecological footprint in the study area,and remained stable during the study period.The percentage of electricity and coal consumption increased year by year,while the proportion of farming products and wild firewood decreased.The per capita ecological footprint in Gannan increased from 4.77 ha per capita in 2005 to 7.09 ha per capita in 2013.The per capita ecological carrying capacity fluctuated between 4.64 ha per capita and 5.65 ha per capita.The ecological footprint index of Gannan showed a decreasing trend,and its ecological environment had an unsustainable development status during the study period.The ecological footprint per ten thousand yuan GDP in Gannan dropped from 12.60 ha per ten thousand yuan in 2005 to 4.86 ha per ten thousand yuan in 2013,revealing that the resource utilization efficiency had improved.Among the counties and cities,Hezuo had the highest ecological footprint index,followed by Diebu.There were no significant differences among the other counties.In general,the per capita ecological footprint and ecological carrying capacity were higher in regions of animal husbandry development (Maqu,Luqu,Xiahe,and Hezuo) than in regions with a farming-pastoral ecotone (Lintan,Zhuoni,Zhouqu,and Diebu).During the 9 years,Diebu,Maqu,and Luqu had a sustainable development status while Xiahe,Zhuoni and Zhouqu had an unsustainable development status.Hezuo and Lintan had a seriously unsustainable development status.Based on these findings,we discuss the future sustainable development of Gannan.关键词
可持续发展/能值生态足迹/生态承载力/资源利用效率Key words
sustainable development/emergy ecological footprint/ecological carrying capacity/resource utilization efficiency引用本文复制引用
李文龙,余翠,赵新来,梁天刚,张金林,许静..基于能值生态足迹模型的青藏高原东部高寒牧区可持续发展研究[J].草业学报,2017,26(4):1-14,14.基金项目
国家自然科学基金(31170430,41471450,31372367,31222053),国家社会科学基金(14CJY010),中央高校基本科研业务费专项(lzu-jbky-2016-br05)和中央高校自由探索优秀研究生创新项目(2022016zr0185)资助. （31170430,41471450,31372367,31222053）
