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中国沙漠 ›› 1982, Vol. 2 ›› Issue (3): 9-15.

• 论文 • 上一篇    下一篇

甘肃临泽绿洲北部沙漠化防治的探讨

刘新民1,2, 吴佐祺1,2, 王宏楼1,2, 任爱成1,2   

  1. 1. 中国科学院兰州沙漠研究所;
    2. 甘肃省临泽县林业局
  • 收稿日期:1982-04-01 出版日期:1982-09-20 发布日期:1982-09-20

A Preliminary study on the ways of Desertification Control in the Northern Part of the Linze Oasis, Gansu Province

1,2   

  • Received:1982-04-01 Online:1982-09-20 Published:1982-09-20

摘要: 临泽绿洲位于河西走廊中部,沿黑河冲积平原呈西北-东南向分布,东西长约100公里,南北宽8-30公里。该绿洲北部及其边缘分布着一条面积约70多平方公里的流沙带(图1)。在西北向主风的作用下,流动沙丘不断侵入绿洲,危害极大。

Abstract: The desertificaton and its control in the northern part of the Linze Oasis were studied. The results indicated that the degradation of the oasis ecosystem is mainly due to the imbalance between the fragile ecosystem and the human's unwise overuse, which triggers and worsens such natural factors as paucity of precipitation, abundance of sand materials and sparseness of vegetation. However, control and reversion of desertification in this area is possible and can be speeded-up artificially when we have a sound understanding of its causation and adopt correct ways to establish and maintain an integrative protection system, which consists of the shelterbelt networks in the farmlands, the sand controlling forest belts along the periphery of the oasis, different types of sand fixing forests, vegetation protecting belts, sand barriers, irrigation system and agri-culural techniques for sand controlling. Through the above approaches for only 15 years, desertification in this area has been controlled and reversed. Not only has the oasis not suffered from sand and drought disasters, but the abandoned desertified land has been recultivated largely, and a stable oasis ecosystem with high productivity formed. Strategies in increasing the stability of the oasis protection system were discussed also.