Temporal and spatial variation of water level in urbanizing plain river network region
With the gradually increased flooding in the East China plain, this paper analyses the problems involved in the changes of water levels of the hydrological system of this region. As one of the most developed regions in China, the plain is undergoing fierce urbanization process. In this study, we mainly analyze the trend of water level time series in the regions during the past decades (1960-2007), and assess the temporal and spatial variation of water level and indicator of hydrologic alteration. The results show that there was increase trend in water level in the study region during the study period. Bigger slope and higher significant level can be observed in monthly minimum water level than in monthly maximum water level, in peri-urban than in urban, and in December-April next year and October than in the other month. And the urban region dominated by increased mean but decreased Cv in monthly minimum (maximum) water level, While peri-urban region dominated mainly by increased mean and Cv in monthly minimum (maximum) water level. Most indicators of hydrologic alteration (IHA) in urban station were concentrated to the range of variability approach (RVA) target, while most indicators were discrete in peri-urban station. And the degree of hydrologic alteration in peri-urban was higher than in urban. The results of this paper will be helpful for the water resources management of the urbanizing plain river network region and Sustainable development of society and economy under the changing environment.
Water level Temporal and spatial variation Hydrologic alteration Urbanization Yangtze River delta
G.L.Xu Y.P Xu X.Luo
College of Territorial Resources and Tourism, Anhui Normal University, Wuhu, Anhui 241000, China School of Geographic and Oceanic Science, Nanjing University, Jiangsu 210093, China Schoo of Resources, Environment and Earth Sciences, Yunnan University, Kunming, Yunnan 650091, China
国际会议
The 3rd Biennial ISRS Symposium Achieving Healthy and Viable Rivers (ISRS)第3届国际河流大会
北京
英文
518-529
2013-08-05（万方平台首次上网日期，不代表论文的发表时间）