中文摘要：

城市化会影响城市生态系统的结构和功能,基于航空遥感影像,选取了上海市典型的＂城-郊-乡＂样带,利用地理信息系统（ArcGIS9.3）和景观格局分析（Frastates3.3）软件,选用6个城市化指标,基于主成分分析（PCA）和多元线性回归分析,在对研究区域城市化水平进行评估的基础上,结合植物相关生长方程和城市绿地冠层面积,对研究区域绿地系统碳储量的空间分异性进行研究。结果表明：（1）所选用的城市化物理指标和景观指数,能够快速地用于评估城市化水平;（2）＂城-郊-乡＂样带上,总的碳储量为4 475 410.7 Mg C,碳密度为71.1Mg C/hm2;（3）城市绿地系统碳储量空间分异性明显,绿地碳储量大小表现为城市化水平高的市中心、城市化水平相对较高的郊区以及城市化水平最低的乡村依次升高,主要原因是由于市中心绿地分散且面积较小,而在农村和郊区其面积较大的生产绿地较多。

英文摘要：

Urbanization affects the structure and function of ecosystem in a city.The＂urban-to-rural＂gradient is an effective technique to examine spatial pattern and processes of urbanization.Quantitative studies on interaction between landscape pattern and function of urban ecosystem have become the core issues of landscape ecosystem in city.In addition,terrestrial ecosystem carbon cycle research has been the hot issue of global ecosystem,while the urban ecosystem as a type of terrestrial ecosystem is an important source of carbon.It is therefore important for us to study ecosystem carbon cycle in urban area.Although urban green space is an important part in city,we know little of its function in carbon storage.This paper,based on remote sensing images,used geographic information system（ArcGIS 9.3）,landscape pattern analysis（Fragstates 3.3）and statistics（SPSS 17）to calculate 6commonly used indicators including physical variables and landscape metrics.Principal components analysis and multiple linear regression were used to assess the urbanization level of Shanghai in a direction.Using biomass regression equations and UTC area to estimate the carbon stocks of urban green space in an urban-to-rural gradient.The results showed as follows.（1）Urbanization indictors can be used to describe the level of urbanization.The gradient of＂urban-to-rural＂showed spatial differentiation.This kind of differentiation is consistent with the history of development in Shanghai and function of each region.（2）The total carbon storage and average carbon density of urban green space were 4,475,410.7Mg C and 71.1Mg C/hm2 in study area.（3）Distribution of carbon storage along the transect were as follows：the high carbon storage green space is more dispersed in Pudong and Center districts,which were dominated by small green space in residential areas,the high carbon storage green space is more concentrated in Fengxian and Minhang districts,which were dominated by large-scale nursery;carbon density trends in different