JOURNAL OF NATURAL RESOURCES ›› 2004, Vol. 19 ›› Issue (6): 716-724.doi: 10.11849/zrzyxb.2004.06.005

• Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS • Previous Articles     Next Articles

Flood & drought disaster and regulation of storm-runoff resources in Hunan Province

LI Jingbao1, WANG Kelin2, ZHU Ning1, LIANG Chengjun3, LIU Jiewei1   

  1. 1. College of Resources and Environment Science, Hunan Normal University,Changsha 410081,China;
    2. Institute of Subtropical Agriculture,CAS,Changsha 410125,China;
    3. College of Tourism and Administration, Central South Forestry University, Changsha 410004, China
  • Received:2004-03-12 Revised:2004-04-03 Online:2004-12-25 Published:2004-12-25

Abstract: Based on synthetic analysis of the statistics of the flood & drought disaster conditions from 1950 to 2002 and the rainfall amount from 1956 to 1988 and from 1954 to 1998 in Hunan Province in combination with natural conditions of drainage basins and the current situation of water conservancy,several conclusions can be drawn.The alternative evolution tendency of flood & drought in hilly areas of Hunan Province becomes more and more evident,the flooding outside of and waterlogging inside of Dongting Lake area alternate frequently,rural population who have difficulties in getting drinking water increases constantly.The rainfall from July to September only occupies 20% of the year's total,contrarily,rainfall from April to September occupies 69%, and precipitation most frequently occurs in the form of storm runoff.And this precipitation characteristic is the sticking point leading to the water security problems.So,it is necessary to take measures such as making full use of the favorable landform to construct small scale flood retention and storage projects,to rehabilitate eco environment in an all round way,to bring into play the potential of reservoir groups in flood prevention and water conservancy works constru ction,and to enhance the adjustment levels of large reservoirs so as to effectively regulate storm runoff from April to August,mitigate flood & drought disasters,at the same time,to satisfy the water demands for water supply,power generation,navigation,tourism and so on.

Key words: flood &, drought disaster, storm characteristics, storm runoff resources, regulation measures