| 几种主要固沙措施的价值分析 |
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| 引用本文： | 常兆丰.几种主要固沙措施的价值分析[J].中国沙漠,1995,15(2):187-190. |
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| 作者姓名： | 常兆丰 |
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| 作者单位： | 甘肃省治沙研究所 |
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| 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。
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| 关 键 词： | 民勤，固沙措施，ABC分析法 |
VALUE ANALYSIS ON SEVERAL MAJOR SAND-FIXING MEASURES |
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| Chand Zhaofeng.VALUE ANALYSIS ON SEVERAL MAJOR SAND-FIXING MEASURES[J].Journal of Desert Research,1995,15(2):187-190. |
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| Authors: | Chand Zhaofeng |
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| Abstract: | Taking Minqjn desert as an example ,the functions of six major sand-fixing measures areanalysed 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 increasein organic matter, Nand fine particle in soil. The former can be expressed by the erosion-depositioncoefficient , while the latter can be expressed by the soil organic matter and N contents as well as therelative percentage of sand particles finer than 0.1 mm. In addition, the costs of different sand-fixingmeasures are calculated, thus laying a scientific basis for the selection of sand-fixing measures. |
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| Keywords: | Sand-fixing measure Desert |
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