摘要
城市化是人类活动对自然造成影响的具象化表现,过度城市化会对生态环境造成不可逆损害,造成生境质量下降,调节生境质量与城市化之间的耦合协调性迫在眉睫。以长三角城市群为例,采用InVEST模型分析2000~2020年长三角城市群生境质量并探究其时空分布及变化趋势;在区县尺度上对生境质量与城市化程度进行冷热点分析,最后通过耦合与解耦模型对生境质量与城市化程度之间的交互耦合关系进行探究。结果表明:①2000~2020年长三角城市群生境质量由北至南呈现中—低—高的分布并有恶化趋势,但整体生境质量仍处于一般水平,其中在变化的类型中,占比最大的是较差—差,占比7.429%;②区县尺度上,生境质量热点在南部,冷点分布在中部,生境质量下降的区县由54个增加为127个,生境质量恶化趋势明显,2000~2020年城市化热点数量快速增加,整体城市化水平快速提高,区域差异逐渐增强;③长三角城市群平均耦合协调度均在0.7~0.8之间,虽然有所波动,但仍为基本协调状态,解耦程度逐渐增加,以强负解耦和弱解耦为主,生境质量恶化趋势严峻。
Urbanization is a tangible manifestation of the impact of human activities on nature.Excessive urbanization will cause irreversible damage to the ecological environment,resulting in the decline of habitat quality,and it is urgent to regulate the coupling and coordination between habitat quality and urbanization.Taking the Yangtze River Delta(YRD)urban agglomeration as an example,we adopt the InVEST model to analyze the habitat quality of the YRD urban agglomeration from 2000 to 2020 and explore its spatial-temporal distribution and change trends.We conduct a cold-hot spot analysis between the habitat quality and the degree of urbanization at the county and district scales,and finally,it explores the interactive coupling relationship between habitat quality and the degree of urbanization utilizing the coupling and decoupling model.The results showed that the habitat quality of the Yangtze River Delta urban agglomeration from 2000 to 2020 showed a medium-low-high distribution from north to south with a deteriorating trend,but the overall habitat quality was still at an average level,in which the largest proportion of the type of change was poor-poor,with a proportion of 7.429%.On the county and district scales,the hotspots of habitat quality were located in the south,the cold spots were located in the central part of the country,and the number of counties with declining habitat quality increased from 54 to 127,and the trend of habitat quality deterioration was obvious.From 2000 to 2020,the number of urbanization hotspots increased rapidly,the overall level of urbanization increased rapidly,and the regional differences were gradually larger.The average coupling coordination degree of the YRD urban agglomerations was between 0.7 and 0.8,although there were some fluctuations,it was still in a state of basic coordination.The degree of decoupling increased gradually,strong negative coupling and weak coupling dominated.The trend of habitat quality deterioration was serious.
作者
张柏豪
刘家福
祝悦
孔祥力
张震禹
ZHANG Baihao;LIU Jiafu;ZHU Yue;KONG Xiangli;ZHANG Zhenyu(College of Geographic Sciences and Tourism,Jilin Normal University,Siping 136000,China)
出处
《人民长江》
北大核心
2024年第6期75-84,共10页
Yangtze River
基金
国家自然科学基金项目(41977411)
吉林省社会科学基金项目(2022B40)
四平市科技发展计划项目(2023031)。
关键词
生境质量
城市化
InVEST模型
耦合模型
长三角城市群
habitat quality
urbanization
InVEST model
coupling model
Yangtze River Delta Urban Agglomeration
