韩江上游水土流失和治理

The Soil-water Loss and Regulation of the Up-stream Reach of Hanjiang River

本文探讨了韩江上游泥沙来源、主要产沙区、河流泥沙运移规律,提出了本区水土保持技术方针.韩江上游水土流失整治有效地改善了梅江水文形态,减少入韩泥沙,生态状况逐步步入优性生态平衡,社会效益和经济效益也十分显著. 韩江流域地跨北纬23°23′～24°56′,东经115°19′～116°56′之间.辖广东省河源市两个县,梅州市八个县(区),汕头特区和福建省龙岩地区的一些县(区),面积30112km^2.上游包括河源市紫金、龙川两县和梅州市八个县(区),面积17557km^2.

This paper describes the sources of sediments, the main sediment yield,areas and the patterns of load transportation in upper reaches of Hang River.The technical policies of soil and water conservation in this region has been presented. Through the control of soil erosion in upperreaches of Hang River, Mei River's hydrological condition has been improved, the amount of sediments into Hang River has been reduced, the environment in the region is stepping into favourable ecological equilibrium, and remarkable social and economic benefits has been achieved.