ANALYSIS OF LANDSCAPE DYNAMICS IN SHANGHAI USING LANDSCAPE
METRICS: EFFECTS OF SPATIAL RESOLUTIONS
Qian Zhang 3, b ' *, Yifang Ban 3 , Jiyuan Liu b , Quanqin Sha b , Yunfeng Hu 3 ' b
Dept, of Urban Planning and Environment, KTH-Royal Institute of Technology, Drottning Kristinas vag30,
Stockholm, Sweden - (qianzh, yifang)@infra.kth.se
b Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A, datum road,
anwai, chaoyang district, Beijing, P.R.China - liujy@igsnrr.ac.cn, (shaoqq, huyf)@lreis.ac.cn
KEY WORDS: Remote Sensing, Urban, Ecology, Analysis, Change, SPOT
ABSTRACT:
It is increasingly evident that urban sprawl leads to dramatic changes in landscape patterns and thus changes in ecosystem
functioning. Analysis of the landscape patterns and their dynamic under urbanization is of great importance for sustainable
development, especially in cities with significant changes like Shanghai. The objective of this research is to illustrate the landscape
dynamic under the urbanization process in a selected test area of Shanghai in 1991, 1998 and 2007 using multitemtopal remote
sensing and landscape metrics; and to determine the optimal resolution suitable for this case study. Preliminary results show that it is
a quick and executable way to assessing the impact of urban sprawl on landscape dynamic using remote sensing data and landscape
matrices; and the optimal resolution for the case study is 10-30 meters.
1. INTRODUCTION
Humanity today is experiencing a dramatic shift to urban living.
More than 95% of the net increase in the global population will
be in cities of the developing world, which will approach the
80% urbanization level of most industrialized nations today
(Grimm et al., 2008). Indubitably, urban sprawl is one of the
severe land use/cover change types especially for the
developing countries just like China (Chen et al., 2000),
Increasing evidence indicates that urban sprawl leads to
dramatic changes in landscape pattern and thus changes in
ecosystem functions (Turner, 1989; Herold et al., 2003), for
examples, the rapid reduce of biodiversity, the shortage of
water resources and the heavy deterioration of air quality
(Wilson, et al., 2003). Therefore, analyzing the landscape
patterns and their dynamic under urbanization is of great
importance for sustainable development, especially in cities
with significant changes like Shanghai.
Landscape metrics is one of imperative methods for
understanding the structure, function and dynamics of
landscapes and has a pivotal role to play in finding those
solutions and navigating a sustainable urban future (Wu,2006;
Jelinski et al., 2000). At the same time, development of remote
sensing and geographic information techniques provides rich
data source and powerful spatial analysis methods for the
research on landscape metrics.
Past studies focused on the development of different indexes
portraying different aspects of landscape, numerous indexes
emerged at a time. Software such as Fragstats (McGarigal and
Marks, 1995) and APACK (Mladenoff and DeZonia, 2001) is
available to researchers world-wide. Since then, more and more
research were conducted applying these metrics (Wu & David,
2002; Luck & Wu, 2002; Li et al., 2004; Guo et al., 2007; Zhou
et al., 2007; Li et al. , 2005) and discussion were made on the
do’s and don’ts during the application (Li et al.,2004; Li & Wu,
2004), as well as, the effects of grain (Buyantuyev & Wu, 2007;
Meng et al., 2007; Zhang et al., 2007; Tan et al., 2005; Wu,
2004; Qi & Wu, 1996), extent(2fw et al., 2004; Zhao et al., 2007)
and land use (Peng et al., 2006) on the landscape metrics
analysis(<S7jao & Wu, 2008). Specific landscape metrics and
scale should be selected after careful consideration when it
comes to the specific landscape analysis task.
2. STUDY AREA AND DATA
Shanghai is undergoing rapid urban sprawl because of the
unprecedented economic and population growth recently (Meng
et al, 2007). A 5km*5km study area located in central zone of
shanghai is chosen in this case study (Fig. 1). The major
landuse classes are residential area, industrial area, commercial
area, transportation, infrastructural area (i.e., public facilities),
greenbelt, water and unclassified areas. The SPOT images used
for land use type interpretation were acquired on 2007-12-
31 (pan+xs), 1998-04-16(pan), 1998-05-27(xs) and 1991-09-
20(pan).
Figure 1. Location (Left) and SPOT XS
Images (R: 1, G: 2, B: 3) in 2007(Right) of study area
* Corresponding author. Tel.: +46 8 790 7334; Fax: +46 8 790 7343; E-mail: qian.zhang@infra.kth.se
303