| 摘要: |
| 以沙坡头人工固沙植物油蒿和柠条为例，构建了基于水分因子的沙区人工植被系统健康损害度模型,并对其进行了定量分析。结果表明：单种油蒿的营林密度为2 500株/hm2，或油蒿、柠条混种情况下，其营林密度为6 660株/hm2时，健康损害度最小，且这两种种植模式下植被覆盖率大，防风固沙效果均较好。 |
| 关键词: 沙区 人工植被 生态系统 健康损害度 |
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| 基金项目:国家自然科学基金项目(39970135,30070139) |
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| Calculation and analysis of a model abouthealth damaged degree of sandy plant |
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| Abstract: |
| Two plants Artermisia ordosica and Caragana korshinskii are chosen as the study objects,we set up a health damaged degree model based on water factor and a quantitative analysis is presented.The results indicate:in monoculture,the health damaged index of sample 3 is the smallest,its density is 2 500 plants/hm2;in mixculture,the health damaged index of sample 6 is the smallest,its density is 6 660 plants/hm2;and their vegetation coverages are bigger with wind breaks and sand fixation effects. |
| Key words: sandy area artificial vegetation ecosystem health damaged degree |
