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Developing drainage as the basis of comprehensive control of drought, waterlogging, salinity and saline groundwater
Author(s) -
Sheng Fang,
Xiuling Chen
Publication year - 2007
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.370
Subject(s) - waterlogging (archaeology) , rainwater harvesting , groundwater recharge , groundwater , hydrology (agriculture) , surface runoff , environmental science , drainage , soil salinity , water resource management , surface water , aquifer , environmental engineering , geology , soil water , wetland , ecology , soil science , geotechnical engineering , biology
The North China Plain is short of water resources. The disasters caused by drought, waterlogging, salinity and saline groundwater are the main restrictive factors for sustainable development of agriculture. The regulation of the Haihe River and the excavation and dredging of main drainage rivers have remarkably improved the drainage outlets to drain floodwater, excessive rainwater and saline groundwater into the sea. Exploiting groundwater, including brackish and semi‐saline water by tube wells, has the objectives to combat drought by making irrigation possible in the spring, to lower groundwater levels before the rainy season, to increase percolation and underground storage of rainwater, to reduce surface runoff, to leach salts from the soil by summer rainwater and to prevent waterlogging, thus transforming the natural rainfall into available water resources. In autumn and winter river water is diverted to and stored in deep ditches and canals to recharge groundwater and to promote the freshening of saline groundwater. In this way, through the conjunctive use of surface and groundwater, the balance between exploitation and supplementing of water resources in the area has been maintained, and the comprehensive control of drought, waterlogging, salinity and saline groundwater, the sustainable utilization of water resources, the sustainable development of economy and society, and a good eco‐environment has been realized. Copyright © 2007 John Wiley & Sons, Ltd.