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中国沙漠 ›› 1995, Vol. 15 ›› Issue (2): 187-190.

• 论文 • 上一篇    下一篇

几种主要固沙措施的价值分析

常兆丰   

  1. 甘肃省治沙研究所, 武威 733000
  • 收稿日期:1993-05-03 出版日期:1995-06-20 发布日期:1995-06-20

VALUE ANALYSIS ON SEVERAL MAJOR SAND-FIXING MEASURES

Chand Zhaofeng   

  1. Gansu Desert Control Institute, Wuwei, 733000
  • Received:1993-05-03 Online:1995-06-20 Published:1995-06-20

摘要: 以甘肃民勤沙区为例,采用ABC分析法选取了当地6种主要固沙措施,将其功能分解为主要功能和次要功能。主要功能定义为固阻流沙的功能,以1-蚀积系数表示;次要功能定义为改善土壤理化性质的功能,以增加土壤有机质、全氮量和<0.1mm的沙粒的相对值表示,调查计算了固沙措施功能周期内的全部成本,从功能和成本两方面进行了价值分析,为选用固沙效果显著且投资相对低廉的固沙措施提供科学依据。

关键词: 民勤, 固沙措施, ABC分析法

Abstract: Taking Minqin desert as an example ,the functions of six major sand-fixing measures are analysed by the ABC analytical method.Their functions can be divided into primary functions,including the function of sand fixation and sand block , and the secondary function, including increase in organic matter, N and fine particle in soil. The former can be expressed by the erosion-deposition coefficient , while the latter can be expressed by the soil organic matter and N contents as well as the relative percentage of sand particles finer than 0.1 mm. In addition, the costs of different sand-fixing measures are calculated, thus laying a scientific basis for the selection of sand-fixing measures.

Key words: Sand-fixing measure, Desert