成都市城市绿地景观与生态系统服务的关系  

Relationship Between Urban Green Space Landscape and Ecosystem Services in Chengdu City

作　　者：魏嘉馨 干晓宇[1] 黄莹[1] 郭仲薇 WEI Jia-xin;GAN Xiao-yu;HUANG Ying;GUO Zhong-wei(School of Architecture and Environment,Sichuan University,Chengdu 610065,Sichuan,China;College of Jinjiang,Sichuan University,Meishan 620860,Sichuan,China)

机构地区：[1]四川大学建筑与环境学院,四川成都610065 [2]四川大学锦江学院,四川眉山620860

出　　处：《西北林学院学报》2022年第6期232-241,共10页Journal of Northwest Forestry University

基　　金：国家自然科学基金青年基金项目(51108284)。

摘　　要：探究城市绿地景观格局与生态系统服务之间的关系,能够为城市绿地规划设计和生态文明建设提供科学依据。基于成都市2019年土地利用数据,计算成都市城市绿地斑块尺度的7个景观格局指数,利用InVEST模型研究绿地的水源供给、土壤保持和碳储存3种生态系统服务的空间分布特征,并利用相关性分析探明景观格局与生态系统服务的关系。结果表明,成都市绿地面积及绿地间距离差异较大,平均值分别为29.01 km^(2)和256.8 m,形状较为规整;成都市绿地生态系统服务具有空间差异性,水源供给服务总量达24.98×10^(8) m^(3),呈现西南高东低的趋势;碳储存服务为12.73×10^(6) t,空间上呈中部高值聚集分布,其余地区为中、低值;土壤保持服务总量为3.54×10^(8) t,空间上呈现西南高东低的分布趋势;绿地的景观指数与生态系统服务之间呈非线性相关,水源供给、碳储存和土壤保持服务与斑块面积的关系是随面积的增大3种服务均先快速增加后增长速度减缓;随斑块间距离增大,水源供给、碳储存呈先降后增的趋势;绿地斑块距离与土壤保持服务呈负相关。In order to deeply explore the relationship between landscape pattern and ecosystem services of urban green space to provide scientific evidences for the planning,design of urban green space and to build ecological civilization,the land use data of Chengdu were collected in 2019 to characterize 7 landscape pattern indexes of green space,and the InVEST model was used to analyze the spatial distribution characteristics of water supply,soil conservation and carbon storage.The relationships between ecosystem services and landscape indexes were analyzed based on nonlinear correlation analysis.The results showed that differences in area and the distance among green spaces were significant.The averages of green space area and distance were 29.01 km^(2) and 256.8 m,respectively,and the shape was relatively regular.Spatial differences were observed among the services of different eco-service systems.The total amount of water supply service was 24.98×10^(8) m^(3),which presented a trend of high in the southwest and low in the east.The amount of carbon storage service was 12.73×10^(6) t,with a spatial distribution of high values in the central part of the city,and the rest being medium and low.The soil conservation service was 3.54×10^(8) t,with a spatial distribution trend of high in the southwest and low in the east.There were nonlinear correlations between ecosystem services and landscape indexes of green space.As the increase of patch areas of green spaces,the water supply,carbon storage,soil conservation increased rapidly and then slow down.With the increase of distance between green space,the water supply and carbon storage decreased at first and then increased.There was a negative correlation between distance and soil conservation services.

关 键 词：城市绿地 生态系统服务 景观格局 INVEST 

分 类 号：S731.2[农业科学—林学]