caa a22 4500 467904626 CHVBK 20180406152830.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s10661-006-6559-z doi (NATIONALLICENCE)springer-10.1007/s10661-006-6559-z Land-cover changes in an urban lake watershed in a mega-city, Central China [Elektronische Daten] [Yan Li, Shuqing Zhao, Kun Zhao, Ping Xie, Jingyun Fang] Urbanization can exert a profound influence on land covers and landscape characteristics. In this study, we characterize the impact of urbanization on land cover and lacustrine landscape and their consequences in a large urban lake watershed, Donghu Lake watershed (the largest urban lake in China), Central China, by using Landsat TM satellite images of three periods of 1987, 1993 and 1999 and ground-based information. We grouped the land covers into six categories: water body, vegetable land, forested land, shrub-grass land, open area and urban land, and calculated patch-related landscape indices to analyze the effects of urbanization on landscape features. We overlaid the land cover maps of the three periods to track the land cover change processes. The results indicated that urban land continuously expanded from 9.1% of the total watershed area in 1987, to 19.4% in 1993, and to 29.6% in 1999. The vegetable land increased from 7.0% in 1987, 11.9% in 1993, to 13.9% in 1999 to sustain the demands of vegetable for increased urban population. Concurrently, continuous reduction of other land cover types occurred between 1987 and 1999: water body decreased from 30.4% to 23.8%, and forested land from 33.6% to 24.3%. We found that the expansion of urban land has at least in part caused a decrease in relatively wild habitats, such as urban forest and lake water area. These alterations had resulted in significant negative environmental consequences, including decline of lakes, deterioration of water and air quality, and loss of biodiversity. Springer Science + Business Media, Inc., 2006 Central China nationallicence Donghu Lake nationallicence land cover change nationallicence landscape characteristics nationallicence remote sensing nationallicence urbanization nationallicence urban lake watershed nationallicence Li Yan Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut Zhao Shuqing Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut Zhao Kun Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut Xie Ping Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China aut Fang Jingyun Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 349-359 0167-6369 115:1-3<349 2006 115 10661 https://doi.org/10.1007/s10661-006-6559-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-6559-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Yan Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut NATIONALLICENCE 700 1- Zhao Shuqing Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut NATIONALLICENCE 700 1- Zhao Kun Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut NATIONALLICENCE 700 1- Xie Ping Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China aut NATIONALLICENCE 700 1- Fang Jingyun Department of Ecology, College of Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 349-359 0167-6369 115:1-3<349 2006 115 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer