生物与土壤

基于生态足迹的中国四大沙地地区可持续评价

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  • 1 水土保持学院/水土保持国家林业局重点实验室, 北京 100083;
    2 宁夏盐池毛乌素沙地生态系统国家定位观测研究站, 北京 100083
于娜(1992-),女,吉林白城人,在读硕士研究生,主要从事荒漠化防治方面的研究.E-mail:yunabjfu@126.com

收稿日期: 2018-05-15

  修回日期: 2018-07-31

基金资助

国家重点研发项目(2016YFC0500905);国家自然科学基金项目(41401095)

Sustainability assessment in four sandy lands of China based on the ecological footprint model

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  • 1 College of Soil and Water Conservation/Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing 100083, China;
    2 Yanchi Ecology Research Station of the Mu Us Desert, Beijing Forestry University, Beijing 100083, China

Received date: 2018-05-15

  Revised date: 2018-07-31

摘要

基于社会经济统计数据,采用生产性生态足迹模型,评估并对比了我国四大沙地地区2000年和2015年的生产性生态足迹和生态赤字/盈余状态,以揭示区域的可持续性。结果表明:2000-2015年,四大沙地地区人均生态足迹总体呈现增加趋势,毛乌素沙地地区人均生态足迹年均增长率最高,达20.85%,增长量为79.21 hm2·人-1;人均生态足迹主要以化石能源足迹和草地足迹为主;2000-2015年四大沙地地区生态赤字程度在不断增强,毛乌素沙地地区人均生态赤字变化量最大,达79.51 hm2·人-1,造成赤字程度加大的主要原因是地区化石能源的大量生产。随着人们生活水平的提高,人们对资源的需求量也在不断增加,当前四大沙地地区社会经济的发展在一定程度上仍以自然资源大量生产和消耗为代价,经济发展和环境保护之间的平衡仍存在挑战,需要根据各地区的具体情况制定有针对性的管理措施,以维持区域的可持续发展。

本文引用格式

于娜, 赵媛媛, 丁国栋, 崔晓, 彭玏 . 基于生态足迹的中国四大沙地地区可持续评价[J]. 干旱区地理, 2018 , 41(6) : 1310 -1320 . DOI: 10.12118/j.issn.1000-6060.2018.06.19

Abstract

The four mega-sandy lands are typical regions with desertification in China due to the instability and vulnerability of natural conditions.With the development of the ecological restoration projects,the area of desertification land in four sandy lands of China has been decreased since 2000.However,regional sustainable development still faces challenges due to the increasing pressure of socio-economic development and the limited carrying capacity of resources in the sandy lands.Therefore,evaluation and comparing the level of sustainability in four sandy lands is significant for targeted management and regional sustainable development.Based on the ecological footprint model developed by Wackernagel,this paper adopts an improved productive ecological footprint model to compare the actual area of land actually occupied by each region from the ecosystem each year (ecological footprint) and the land that provides biological and productive materials in the same area (ecosystem capacity),and then determines the pressure of human activities on the local ecosystem in the four sandy lands in order to analyze the sustainability of the four sandy lands.This study calculated productive ecological footprint and analyzed the sustainability of four sandy lands of China from 2000 to 2015.The results showed that per capita ecological footprint (PCEF) had a significant increasing trend among the four sandy lands.The annual increasing rate of PCEF in Mu Us Sandy Land was 20.85%,higher than other three sandy lands.The increasing amount of PCEF in Mu Us Sandy Land was highest (79.21 hm2·cap-1).The PCEF of four main sandy lands was mainly dominated by fossil energy footprint and grassland footprint.The per capita ecological deficit (PCED),which is the difference of PCEF and per capita ecological capacity,was also growing from 2000 to 2015 with Mu Us Sandy Land having the highest value.The main reason for the increasing PCED was the mass production of fossil energy footprint.According to the correlation analysis of PCEF and other sustainability indices such as Human Development Index and the Engel's coefficient,people's demand for resources has been increased with the improvement of people's living standard,and the development of society and economy,which was still at the expense of the natural resources production and consumption.The balance between economic development and environmental protection in sandy zones remains a challenge.It is suggested that the mineral resource exploitation mode should be adjusted,and protection and utilization of grassland resources should be conducted according to the main structural types of the ecological deficits in different sandy lands.

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