Hydrological adjustment and flooding control of wetlands in the Liaohe Delta
The function of estuary wetland on hydrological adjustment and flooding control is studied in this paper.It is estimated that theevapotranspiration in the reed field during growth season(June to October) is 722.9 mm, which is 37.5% higher than large water body(E601:525.9 mm).The water replacement rate in the reed field can reach 95 % only when the rains continuously for 11 days and the precipitationreached 912 mm.For the water balance in the paddy field, the total water requirement ranges between 1920 and 1860 mm, among which,31% is from precipitation, and the left is provided by reservoirs.The water usage efficiency is 0.35 at present productivity.Based on thelandscape characteristics and functionalities on flooding control, 5 functional zones are designed for the Liaohe Delta: key protected area;underground storage area; flooding discharge area; flood diversion area in emergency; and flood control drainage area.
作 者： XIAO Du-ning WANG Xian-li LI Xiu-zhen PEI Tie-fan ZHAO Yi 作者单位： XIAO Du-ning(Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Cold and Arid Regions Environment & Engineering, CAS, Lanzhou 730000, China)WANG Xian-li,LI Xiu-zhen,PEI Tie-fan,ZHAO Yi(Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China)
刊 名： 环境科学学报(英文版) ISTIC SCI 英文刊名： JOURNAL OF ENVIRONMENTAL SCIENCES 年，卷(期)： 2003 15(2) 分类号： Q149 关键词： hydrological adjustment flood control water replacement water balance landscape planning