河北省怀来县可持续发展状况的生态足迹分析

生态足迹模型是一组基于土地面积的量化指标,通过测定现今人类为了维持自身生存而利用的生物生产性土地面积的量来评估人类对地球生态系统的影响,是一种用来衡量可持续发展程度的方法。论文基于对河北省怀来县生态足迹的测算,从供需平衡状况、供需结构和资源利用效率三方面定量分析了怀来县生态系统可持续发展的状况。结果表明:①2001年怀来县人均生态赤字0.7245hm₂/人,人类活动对区域生态经济系统的影响已超出了其生态承载力的阈值,区域生态经济系统的结构和功能亟需调整;②怀来县人均生态足迹的供需结构具有明显的不对称性,其供给以耕地为主,需求以化石燃料用地为主,可用于人类消费的可供生态空间类型结构较为单一;③人均生态赤字的存在,进一步揭示了当前人地关系紧张的现状;④万元GDP生态足迹需求的区域对比表明,当前怀来县资源利用效率还较低。

Ecological footprint of Huailai County,Hebei Province for sustainability

Ecological footprint (EF)is a set of quantitative indicators b as ed on land areas.It evaluates human activity effect on the global ecosystem by quantifying the biologically productive areas necessary to maintain human surviv al.It is a method to measuring sustainability.In this paper,we use the model to calculate and interpret EF of Huailai County,Hebei Province in2001.Bas ed on the calculation,balance of supply and demand,the structure of supply and demand,and the efficiency of biological resources usage are analyzed respectiv ely.The results show:⑴The per capita EF deficit of Huailai County in2001i s0.7245hm 2/pers.,which means the EF of the present region in terms of human activ ities has already exceeded the benchmark of system ecological carrying capacity .The structure and functions of regional eco-economic system must be adjusted.⑵The structure of EF supply and demand of Huailai County is obviously dissymmetry.The main supply is arable land,and th e main demand is fossil energy land.The ecological space types for human consum ption are more single.⑶The per capita ecological deficit reveals that the rela tionship between man and land is more intense.And the regional comparison of EF demand of ten thousand yuan GDP puts forward that the efficiency of biological resources usage of Huailai county is lower.