摘要
城市化是重要的社会、经济现象之一,快速城市化过程引发了许多环境问题以及生态系统结构和功能的变化.以淮海经济区为例,利用夜间灯光数据提取城市建成区,通过计算城市化程度与植被指数,对比分析2000—2018年城市化影响下城市植被生长的变化及其对城市化过程的响应.结果表明:淮海经济区各城市植被指数与城市化程度回归关系曲线均具有统计学意义(P<0.05);在城市化背景下,各城市植被指数稳定且普遍增强;中低程度城市化对植被生长的负面影响普遍较弱,高度城市化的这种负面影响较强;在高度城市化下,部分城市的城市用地扩张对植被生长的负面影响持续减弱.在城市可持续发展过程中,应探寻城市扩张速度与生态建设的平衡.
Urbanization is an important trend in the development of the world today.This process has caused many environmental problems and changes in the structure and function of the natural ecological system.The night light data are used to extract urban built-up areas.By calculating the degree of urbanization and the vegetation index(VI),the changes and responses of vegetation growth in ten cities in Huaihai Economic Zone from 2000 to 2018 under the influence of the urbanization process were compared and analyzed.The results show that the regression curve of vegetation index and urbanization degree shows a significant change in time.There are general VI stabilization and enhancement in the urbanized environment.Moreover,the negative impact of urbanization on vegetation growth is generally weakened under low and medium levels of urbanization,and the negative impact is increased under high levels of urbanization.But,under the high level of urbanization in some cities,the negative impact of urban land expansion on vegetation growth continues to weaken.It is important to find a balance between urban development and ecological construction.
作者
闫高鑫
裴凤松
仲锐
Yan Gaoxin;Pei Fengsong;Zhong Rui(School of Geography,Geomatics&Planning,Jiangsu Normal University,Xuzhou 221116,Jiangsu,China)
出处
《江苏师范大学学报（自然科学版）》
CAS
2022年第2期1-5,共5页
Journal of Jiangsu Normal University：Natural Science Edition
基金
江苏高校青蓝工程项目,江苏省高校哲学社会科学研究项目(2019SJA0915),江苏师范大学研究生科研与实践创新计划项目(2021XKT0086),江苏高校优势学科建设工程资助项目。
关键词
城市建成区
城市化
植被指数
植被活动
淮海经济区
urban built-up area
urbanization
vegetation index
vegetation activity
Huaihai Economic Zone
