摘要
洪涝灾害、淡水资源短缺和水污染问题是中国水问题中的三大主要问题，已引起社会各界的高度重视。影响中国三大水问题的因素甚多，但水土保持是解决水问题之根本性、战略性措施。泥沙是直接或间接影响中国水问题的重要因素，水土保持通过减少入河泥沙、减洪和削减洪峰抑制洪涝灾害，并通过雨水资源化、增加土壤蓄水、延长水库运行寿命和提高水的利用效率而缓解水资源的短缺，也通过减少径流泥沙而改善水质。
Flood, freshwater shortage and water pollution are considered as the major water problems in China, and have been taken into account by various levels of the whole society. Although there are many factors impacting the three water problems, soil and water conservation (SWC) is the underlying and strategic measures in solving them. Sediment is an importantelement that directly or indirectly influences water problems. SWC can repress flood and waterlog by reducing sediment input to rivers, decreasing flood discharge and peaks. SWC is able to modify the stress of freshwater shortage by rainfallresourcized, increasing soil water content and elongating the operating life of reservoirs,as well as improve water quality by reducing sediment in rivers.
出处
《水土保持通报》
CSCD
北大核心
1999年第3期1-5,共5页
Bulletin of Soil and Water Conservation
基金
国家"九五"攻关项目
水利部科技重点项目资助
关键词
水土保持
泥沙
洪水
水短缺
水污染
soil and water conservation
sediment
flood
water shortage
water pollution
