PRESSURE OF WATER SHORTAGE ON AGRICULTURE IN ARID REGION OF CHINA

编号 zgly0000309380

文献类型 期刊论文

文献题名 PRESSURE OF WATER SHORTAGE ON AGRICULTURE IN ARID REGION OF CHINA

作者 LIXin 

作者单位 UniversityofScienceandTechnologyofSuzhou 

母体文献 Chinese Geographical Science（中国地理科学：英文版） 

年卷期 2003,13(2)

页码 124-129

年份 2003 

分类号 TV213  S157.1 

关键词 水资源短缺  需水量  农业  中国  干旱地区  水土保持  水资源开发 

文摘内容 The arid areas in China are mainly located in North China and Northwest China. The North China is themain region for food production. There is 31.19% of the total farmland and 26.01% of the total population, but only6. 14% of the available water resources of China. Groundwater is over pumped (6. 53 × 10^9m^3 every year) in the regionsof Beijing, Tianjin, and Hebei Province, so water supply could not meet the water demand there. The distribution of wa-ter in Northwest China is uneven, some inland rivers and lakes are dried up, and desertifieation has expanded since riverwater in the upper and middie reaches is diverted for irrigation. Up to 2050, population will be up to 1.6×10^9 in Chi-na, and industry will be developed fast, therefore 50% of the water supply will be used by industry and resident, andwater for agriculture will be decreased year by year. In the coming 50 years, water demand for agriculture will be in-creased by 5.6 × 10^9m^3 in the Huanghe (Yellow) River valley, and by 1.7 × 10^9m^3 in the Northwest China. It will beimpossible for the Huanghe River to meet the water demand, because it always dried up in the cold half year since 1984.To avoid water shortage of agriculture in the arid regions, it is necessary to divert water from the Changjiang (Yangtze)River in the south of China, and to use water efficiently. It is the best way to use drip irrigation in agriculture, recyclewater in industry and resident use, and control water pollution. Otherwise water shortage in the arid regions will restrictthe development of agriculture in China。