基于生态网络分析模型的武汉市“三生空间”碳代谢特征  

Characteristics of Carbon Metabolism of Production-living-ecological Space in Wuhan City of Hubei Province,China Based on Ecological Network Analysis Model

作　　者：魏嶶 叶长盛[1] 蔡鑫 肖蔚 WEI Wei;YE Chang-sheng;CAI Xin;XIAO Wei(School of Earth Sciences,Ease China University of Technology,Nanchang 330013,Jiangxi,China)

机构地区：[1]东华理工大学地球科学学院,江西南昌330013

出　　处：《地球科学与环境学报》2024年第4期528-543,共16页Journal of Earth Sciences and Environment

基　　金：国家自然科学基金项目(42061041)。

摘　　要：通过模拟生物代谢来剖析城市生产、生活及生态空间(简称“三生空间”)碳代谢机理有助于实现区域要素整合和结构优化,是寻求城市绿色低碳发展的有效途径之一。以武汉市为例,基于“三生空间”分类体系构建水平方向上的碳流模型,剖析2005~2020年“三生空间”演化过程中碳要素的流向;运用生态网络分析(ENA)模型对“三生空间”碳代谢进行分析,评估不同用地之间的生态关系;最后利用互惠指数综合评价“三生空间”演化对城市碳代谢的作用。结果表明:①2005~2020年,武汉市整体以负碳流为主导,2010~2015年达到峰值;2005~2015年整体上呈现碳代谢紊乱局面;2015~2020年,碳减排效果显著,正、负碳流较弱,空间上分布零星,后期碳代谢逐渐趋向平衡;②武汉市生态关系以掠夺限制关系为主,生态空间被生活空间和生产空间挤占,不同用地之间的生态冲突较为强烈,2015年后无生态区域增加,生态关系明显改善;③互惠指数呈先减后增的变化趋势,但互惠指数的平均值为0.77(<1),表明“三生空间”演化对城市碳代谢平衡的作用仍为消极,武汉市的国土空间利用仍有不合理之处,碳代谢压力尚存,需进一步优化国土空间布局,促进绿色低碳发展。Analyzing the carbon metabolism mechanism of production-living-ecological space through simulating biological metabolism can help to achieve the integration of regional elements and structural optimization,which is one of the effective ways to seek for the green and low-carbon development of cities.Taking Wuhan city,Hubei province as an example,a horizontal carbon flow model was constructed to analyze the flow direction of carbon elements from 2005 to 2020;and ecological network analysis(ENA)model was used to analyze the carbon metabolism of production-living-ecological space,and assess the ecological relationship between different land uses;finally,the comprehensive effect of the evolution of production-living-ecological space on urban carbon metabolism was judged by using the mutualism index.The results show that①from 2005 to 2020,Wuhan city is dominated by negative carbon flows,which peaks in 2010—2015,and the study area shows a disorganized carbon metabolism from 2005 to 2015;from 2015 to 2020,the effect of carbon emission reduction is significant,the positive and negative carbon flows are weaker,and distribute sporadically in space,and carbon metabolism is gradually balanced at the later stage;②ecological relationships in Wuhan city are dominated by predation-restriction,ecological space is crowded by living space and production space,ecological conflicts between different land uses are more intense,and ecological relationships improve significantly after 2015 when the area without ecological relationships increase;③the mutualism index shows a trend of decreasing and then increasing,but the average value of mutualism index is 0.77(<1),which indicates that the evolution of the production-living-ecological space still has a negative effect on the balance of urban carbon metabolism,and there are still irrationalities in spatial utilization of Wuhan s land and the pressure on carbon metabolism,which calls for the optimization of land and spatial layout,and the promotion of green and low-carbon developmen

关 键 词：生产空间 生活空间 生态空间 碳代谢 生态网络分析模型 生态关系 空间分布 武汉 

分 类 号：F301.2[经济管理—产业经济] X321[环境科学与工程—环境工程]