保定市生产性生态承载力与生态功能耦合协调度时空分异  

Spatio⁃temporal difference of coupling coordinative degree of productive ecological carrying capacity and ecological function in Baoding,Hebei Province

作　　者：谷祎璠 丁疆辉[1] 李奥梦 GU Yifan;DING Jianghui;LI Aomeng(Faculty of Resources and Environment Science,Hebei Normal University,Shijiazhuang 050024,China)

机构地区：[1]河北师范大学资源与环境科学学院,石家庄050024

出　　处：《生态学报》2020年第20期7175-7186,共12页Acta Ecologica Sinica

基　　金：国家重点研发计划项目(2018YFC0506901)。

摘　　要：生态承载力与生态功能对区域均具有正向支撑作用,二者存在一定的相互影响,探讨其交互耦合关系,可以客观反映区域经济发展与生态环境的协调程度。基于国内外生产性生态承载力研究成果,结合生态保护红线划定方案对水土保持、水源涵养、防风固沙、生物多样性维护四项生态功能的评价方法,测算和分析保定市2010年和2017年的人均生态承载力及其与各类生态功能的耦合协调度及其影响因素。结果表明:①2010年和2017年保定市总生态承载量和人均生态承载力均有所提升,保定市生态经济性支撑作用不断提高,其中耕地和草地对其贡献最大;空间分布上由北向南递减,市区承载力最低;②各类生态功能高值区主要集中于保定市西北地带,水源涵养功能最强,两年间变化不大;③人均生态承载力和生态功能的耦合协调度时序变化不大,空间上以生态功能格局为基础,生态承载力的变化导致结果存在偏移;根据耦合结果可将保定市土地和生态功能支撑力的协调程度分为3个层次,低承载低耦合区、高承载高耦合区和低承载高耦合区;④经济社会发展水平、自然禀赋、区域发展战略等因素对保定市各类耦合协调度的分布和变化带来了主要影响。研究成果将为综合建设保定市生态可持续发展提供理论参考。Ecological carrying capacity is an important indicator to measure the supporting capacity of social economy and resource environment subsystems.There is to some extent an interplay between ecological carrying capacity and ecological functions which have positive effects on the region.Exploration of their interactive coupling relationship can objectively reflect the degree of coordination between regional economic development and the ecological environment.This paper is based on the domestic and foreign research of productive ecological carrying capacity,and combined with evaluation methods of the 4 ecological functions,including water conservation function,wind prevention and sand fixation function,biodiversity conservation function,and soil and water conservation function,which were worked out by ecological protection redline delimitation.The per capita ecological carrying capacity and its coupling coordinative degree with different ecological functions and its influential factors of Baoding City in 2010 and 2017 was measured and analyzed.The results show that:1)the total and per capita ecological carrying capacity of Baoding in 2010 and 2017 were improved from 2.55×10^7 hm^2 to 2.94×10^7 hm^2,and from 2.64 hm^2 to 2.94 hm^2 respectively,indicating that the supporting capacity of Baoding′s ecosystem continued to increase.The cultivated land and grassland had the largest contribution to the carrying capacity.The value decreased from north to south from the perspective of spatial distribution,and the urban area had the lowest value.2)High⁃value areas of all ecological functions were mainly concentrated in the northwest of Baoding,with the strongest water conservation function,which hadn′t changed much in two years.3)The time series of coupling coordinative degree between per capita ecological carrying capacity and ecological functions had little change.Water conservation function had the highest coupling coordinative degree with ecological carrying capacity.The overall distribution pattern of coupling coor

关 键 词：生态承载力 生态功能 耦合协调度 时空格局 保定市 

分 类 号：X24[环境科学与工程—环境科学] F127[经济管理—世界经济]