Impact of land use change on soil resources in the peri-urban area of Suzhou city

The Yangtze delta area is among the fastest developing areas in China. Here there are mega-cities like Shanghai, Nanjing and the attached urban areas of different sizes including those along the lower reaches of the Yangtze River from Shanghai up to Nanjing as well as their satellite cities and towns, forming one of the most densely distributed urban areas in China. This is a case study done in Suzhou city at the center of the Yangtze delta to reflect the impact of urban sprawl on soil resources using satellite images and digital soil databases. The extent of the developed land in the studied area and the impact of development on soil resources at 1:100,000 scale are estimated and the soil types impacted most by urbanization development are determined through overlaying the soil map on the satellite images (Landsat-7) of the studied area at different times (1984, 1995, 2000 and 2003). The methodology for this study consists of analyzing data resulting from using a geographic information system (GIS) to combine urban land use maps of different times derived from satellite images with data on soil characteristics contained in the established soil databases by which some results come into being to present the fast expanding trend of urbanization in the Yangtze delta area, the urban spread and the soils occupied by the urbanization process, and also the quality of the occupied soils.

China Foundry Week 2017 and CHINACAST 2017 open concurrently in Suzhou city

China Foundry Week 2017&the China Foundry Expo(CHINACAST)2017,hosted by the Foundry Institution of Chinese Mechanical Engineering Society(FICMES)and the State Key Laboratory of Light Aloy Casting Technology for High-end Equipment,were successfully held November 14-17,2017 in Suzhou International Expo Centre,

Spatial diversion and coordination of flood water for an urban flood control project in Suzhou, China

Suzhou City,located in the Yangtze River Delta in China,is prone to flooding due to a complex combination of natural factors,including its monsoon climate,low elevation,and tidally influenced position,as well as intensive human activities.The Large Encirclement Flood Control Project(LEFCP)was launched to cope with serious floods in the urban area.This project changed the spatiotemporal pattern of flood processes and caused spatial diversion of floods from the urban area to the outskirts of the city.Therefore,this study developed a distributed flood simulation model in order to understand this transition of flood processes.The results revealed that the LEFCP effectively protected the urban areas from floods,but the present scheduling schemes resulted in the spatial diversion of floods to the outskirts of the city.With rainstorm frequencies of 10.0%to 0.5%,the water level differences between two representative water level stations(Miduqiao(MDQ)and Fengqiao(FQ))located inside and outside the LEFCP area,ranged from 0.75 m to 0.24 m and from 1.80 m to 1.58 m,respectively.In addition,the flood safety margin at MDQ and the duration with the water level exceeding the warning water level at FQ ranged from 0.95 m to 0.43 m and from 4 h to 22 h,respectively.Rational scheduling schemes for the hydraulic facilities of the LEFCP in extreme precipitation cases were developed ac-cording to food simulations under seven scheduling scenarios.This helps to regulate the spatial flood diversion caused by the LEFCP during extreme precipitation.

System dynamics model of Suzhou water resources carrying capacity and its application

A model of Suzhou water resources carrying capacity （WRCC） was set up using the method of system dynamics （SD）. In the model, three different water resources utilization programs were adopted： （1） continuity of existing water utilization, （2） water conservation/saving, and （3） water exploitation. The dynamic variation of the Suzhou WRCC was simulated with the supply-decided principle for the time period of 2001 to 2030, and the results were characterized based on socio-economic factors. The corresponding Suzhou WRCC values for several target years were calculated by the model. Based on these results, proper ways to improve the Suzhou WRCC are proposed. The model also produced an optimized plan, which can provide a scientific basis for the sustainable utilization of Suzhou water resources and for the coordinated development of the society, economy, and water resources.

Suzhou:City of Gardens

AS the Chinese saying goes, "In heaven there is paradise; on earth are Suzhou and Hangzhou." Chinese people and foreigners alike first hear of Suzhou from this maxim. In ancient times, Suzhou was a center of economic prosperity and cultural abundance. Even after the passage of time, and the dramatic changes that have taken place in the world, people still speak of and remember Suzhou in all its timeless charm.

苏南地区村镇与水系空间形态分形演变特征研究——以苏州为例

Southern Jiangsu Province has a dense water network.Under the guidance of the new concept of harmonious development between humans and nature proposed at the 19 th CPC National Congress,it is of great significance to build a good spatial relationship between the town and its water system.Using the grid method,this paper calculates the fractal dimension of construction land and water space of 20 towns in Suzhou City since 1995,finding that the fractal dimension of town construction land rises rapidly,whereas that of water space drops slowly on a high dimension.In addition,the spatial form of town construction land and water space form are characterized by planar aggregation and sporadic growth respectively.The paper discusses the evolutionary characteristics of the fractal correlation of construction land and water space in towns with low-,medium-,and high-density water networks,as well as the represented spatial form relations and the underlying relationship between humans and nature.It concludes with an ecological restoration strategy of the two-way interaction between construction land and water space in different types of towns,which may provide a reference for the ecological progress of towns in southern Jiangsu Province.