摘要
长三角城市群是中国经济发展最活跃、开放程度最高的城市群之一,由于城镇化和工业化快速发展,长三角城市群总体呈现生态空间总体比例较低、生态系统格局变化显著等特征。基于夜间灯光遥感方法揭示长三角城市群的城镇扩张过程,研究城镇扩张对生态系统服务的影响,横向比较长三角城市群生态系统服务对城镇扩张的响应。研究结果表明:(1)可以反映长三角城市群城镇化水平变化的夜间灯光指数随时间变化呈增加趋势,空间上不断从东部沿海向西发展。(2)长三角城市群的水供给量、水源涵养量和土壤保持量基本都呈现先增加后基本持平的状态,植被固碳量总体增加,但生境质量呈现下降趋势。(3)在沿长江岸线、环太湖、环杭州湾等城镇化水平发展程度较高、人口密度较大的区域,生态系统服务受影响的程度更大,尤其是植被固碳量呈现明显的减少趋势。
The Yangtze River Delta Urban Agglomeration(YRDUA)is one of the most active and open urban agglomerations in China’s economic development.Due to the rapid development of urbanization and industrialization,the overall proportion of ecological space in YRDUA was relatively low,and the ecological system pattern changed significantly.Based on nighttime light remote sensing method,this study revealed the process of urban expansion in YRDUA,and investigated the impact of urban expansion on ecosystem services.And a comparative analysis of ecosystem services across YRDUA was conducted to quantify the impacts of urban expansion.The research results indicated that:(1)the urbanization level of YRDUA showed an increasing trend with time,and the nighttime light index in YRDUA continued to expand from the eastern coast to the west in space.(2)The water supply capacity,water source conservation capacity,and soil conservation capacity of YRDUA basically increased first and then remained stable.The overall carbon sequestration capacity of vegetation increased,while the quality of habitats showed a downward trend.(3)In areas with high urbanization level and high population density,such as area along the Yangtze River coastline,area around Taihu Lake,and area around Hangzhou Bay,ecosystem services were more affected.In particular,the carbon sequestration capacity of vegetation showed an obvious decreasing trend.
作者
徐梦佳
孙杰
顾羊羊
刘冬
杨悦
林达义
XU Mengjia;SUN Jie;GU Yangyang;LIU Dong;YANG Yue;LIN Dayi(Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing Jiangsu 210042)
出处
《环境污染与防治》
北大核心
2025年第8期131-137,共7页
Environmental Pollution & Control
基金
生态环境部财政预算项目
生态环境部南京环境科学研究所长三角生态环境保护一体化研究院项目。
关键词
长三角城市群
城镇扩张
人类活动强度
生态系统服务
夜间灯光
Yangtze River Delta Urban Agglomeration
urban expansion
human activity intensity
ecosystem services
nighttime light
作者简介
第一作者:徐梦佳,男,1987年生,硕士,高级工程师,主要从事生态安全和生态产品价值实现机制研究。;通信作者:林达义。
