| 四川盆地森林覆盖率自然影响因素分析 |
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| 引用本文： | 陈实.四川盆地森林覆盖率自然影响因素分析[J].资源开发与市场,1992(2). |
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| 作者姓名： | 陈实 |
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| 作者单位： | 中国科学院成都分院土壤研究室 成都 |
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| 摘 要： | 本文对四川盆地森林覆盖率的影响因素进行逐步回归分析,结果表明影响森林覆盖率的自然因素是综合的,它包括气候、地貌、土壤等自然条件。其中以7月降水量、地形崎岖度、山地比例、酸性紫色土比例及土地垦殖系数等作为决定四川森林覆盖率变化的最重要因素,这5个因素即可解释盆地森林覆盖率80%以上的变化。
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| 关 键 词： | 森林覆盖率 影响因素 回归分析 |
Statistical Analysis on the Natural Factors Affecting the Forest Cover in Sichuan Basin |
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| Chen Shi.Statistical Analysis on the Natural Factors Affecting the Forest Cover in Sichuan Basin[J].Resource Development & Market,1992(2). |
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| Authors: | Chen Shi |
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| Abstract: | Statistical analysis were conducted to determine the factors affecting the forest cover in Sichuan Basin.Results indicated that 17 factors selected from the climatic,geomorphic,soil fac- tors play an important role in controling the variance of the forest cover.Among them 5 factors such as precipitation in July,rugged index,montain proportion and the ratio of cultivated land in total area were main,which could explained around 80% of variation of the forest cover. |
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| Keywords: | forest cover affecting factors statistic analysis |
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