globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-19-3319-2015
Scopus记录号: 2-s2.0-84938539292
论文题名:
Urbanization dramatically altered the water balances of a paddy field-dominated basin in southern China
作者: Hao L; , Sun G; , Liu Y; , Wan J; , Qin M; , Qian H; , Liu C; , Zheng J; , John R; , Fan P; , Chen J
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期:7
起始页码: 3319
结束页码: 3331
语种: 英语
Scopus关键词: Carbon ; Economics ; Ecosystems ; Floods ; Forestry ; Image reconstruction ; Land use ; Population statistics ; Radiometers ; Rain ; Remote sensing ; Rivers ; Satellite imagery ; Stream flow ; Watersheds ; Carbon sequestration ; Hydrological process ; Land surface conditions ; Land use/land cover change ; Moderate resolution imaging spectroradiometer ; Qinhuai River basins ; Socio-economic transformations ; Urban Heat Island Effects ; Climate change ; carbon sequestration ; climate change ; climate variation ; ecosystem management ; ecosystem service ; environmental disturbance ; evapotranspiration ; global warming ; heat island ; landscape change ; leaf area index ; MODIS ; nature-society relations ; paddy field ; population growth ; population structure ; remote sensing ; rice ; satellite data ; streamflow ; urban population ; urbanization ; water budget ; China ; Far East ; Jiangsu ; Qinhuai Basin ; Qinhuai River
英文摘要: Rice paddy fields provide important ecosystem services (e.g., food production, water retention, carbon sequestration) to a large population globally. However, these benefits are diminishing as a result of rapid environmental and socioeconomic transformations, characterized by population growth, urbanization, and climate change in many Asian countries. This case study examined the responses of stream flow and watershed water balances to the decline of rice paddy fields due to urbanization in the Qinhuai River basin in southern China, where massive industrialization has occurred during the past 3 decades. We found that stream flow increased by 58 % and evapotranspiration (ET) decreased by 23 % during 1986-2013 as a result of a three-fold increase in urban areas and a reduction of rice paddy fields by 27 %. Both high flows and low flows increased significantly by about 28 % from 2002 to 2013. The increases in stream flow were consistent with the decreases in ET and leaf area index monitored by independent remote sensing MODIS (Moderate Resolution Imaging Spectroradiometer) data. Attribution analysis, based on two empirical models, indicated that land-use/land-cover change contributed about 82-108 % of the observed increase in stream flow from 353 ± 287 mm yr-1 during 1986-2002 to 556 ± 145 during 2003-2013. We concluded that the reduction in ET was largely attributed to the conversion of cropland to urban use. The effects of land-use change overwhelmed the effects of regional climate warming and climate variability. Converting traditional rice paddy fields to urban use dramatically altered land surface conditions from an artificial wetland-dominated landscape to an urban land-use- dominated one, and thus was considered an extreme type of contemporary hydrologic disturbance. The ongoing large-scale urbanization of the rice paddy-dominated regions, in humid southern China and East Asia, will likely elevate storm-flow volume, aggravate flood risks, and intensify urban heat island effects. Understanding the connection between land-use/land-cover change and changes in hydrological processes is essential for better management of urbanizing watersheds in the rice paddy-dominated landscape. © Author(s) 2015.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78460
Appears in Collections:气候变化事实与影响

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作者单位: International Center for Ecology, Meteorology, and Environment (IceMe), Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science and Technology (NUIST), Nanjing, China; Eastern Forest Environmental Threat Assessment Center, Southern Research Station, USDA Forest Service, Raleigh, NC, United States; Center for Forest Disturbance Science, Southern Research Station, USDA Forest Service, Athens, GA, United States; China Institute of Water Resources and Hydropower Research, Beijing, China; State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China; College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, China; Center for Global Change and Earth Observations (CGCEO), Department of Geography, Michigan State University, East Lansing, MI, United States; School of Planning, Design, and Construction (SPDC), Center for Global Change and Earth Observations (CGCEO), Michigan State University, East Lansing, MI, United States

Recommended Citation:
Hao L,, Sun G,, Liu Y,et al. Urbanization dramatically altered the water balances of a paddy field-dominated basin in southern China[J]. Hydrology and Earth System Sciences,2015-01-01,19(7)
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