黄土高原水蚀风蚀交错区治理的重要性与紧迫性

在全国范围划分水蚀、风蚀和冻融侵蚀三大侵蚀类型区基础上 ,提出进一步划分水蚀风蚀交错区的必要性及重要意义。黄土高原的强烈侵蚀中心出现在水蚀风蚀交错区 ,该区为黄河粗泥沙的主要来源区 ,生态环境脆弱 ,自然灾害频繁。该区又为世界级大型煤田蕴藏地 ,将建成我国 2 1世纪的能源重化工基地。强化水蚀风蚀交错区综合治理 ,对治黄及西部地区开发具有重大意义。

Importance and Urgency of Harnessing the Interlocked Area with Both Water and Wind Erosion in the Loess Plateau

The necessity and importance of further dividing the overlay area of water and wind erosion is put forward in the paper on the basis of national region division of types of water erosion, wind erosion, and frozen and thawing erosion. The inten sive erosion center of the Loess Plateau is located in the interlocked region of water and wind erosion which is the main source of coarse sediment of the Yellow River with poor ecological environment and frequent natural disasters. Besides, the area is also a big coal mine in the world, and will be constructed as Chinese energy and heavy chemical industry base in 21st century. Therefore, it has significant importance for the Yellow River harness and western China development to strengthen comprehensive control of the interlocked area of water and wind erosion.