| 云南糯扎渡自然保护区植被沿坡度空间分异研究 |
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| 引用本文： | 喻庆国,曹顺伟,邓喜庆,卢双珍.云南糯扎渡自然保护区植被沿坡度空间分异研究[J].安徽农业科学,2007,35(28):8994-8996. |
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| 作者姓名： | 喻庆国 曹顺伟 邓喜庆 卢双珍 |
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| 作者单位： | 云南省林业调查规划院,云南昆明,650051 |
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| 基金项目： | 中荷合作云南省森林保护与社区发展项目 |
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| 摘 要： | 为了探索糯扎渡自然保护区植被沿坡度的空间分布规律和植被分布、坡度的相关关系,基于数字地形图,使用ArcView和ERDAS软件制作了数字高程模型;基于数字高程模型,使用ArcMap软件提取了植被类型沿平坡、缓坡、斜坡、陡坡、急坡和险坡6个坡度级的分布图层和植被类型按13个海拔带沿6个坡度级分布的图层,并结合植被图制作了植被类型按6个坡度级分布的三维立体植被图。并且,用EXCEL软件统计了9个自然植被类型沿6个坡度级的分布面积和按13个海拔带沿6个坡度级的分布面积,用SPSS统计分析软件计算了坡度与植被分布的相关关系。结果表明:9个自然植被类型在6个坡度级均有分布;6个坡度级中除Ⅰ坡度级优势类型是水域外,其他坡度级的优势植被类型均是季风常绿阔叶林;坡度对季节雨林和暖温性针叶林的分布影响较大,对山地雨林、落叶季雨林和河谷稀树灌木草丛的分布有一定影响,对季风常绿阔叶林和暖热性稀树灌木草丛的分布影响较小,对暖热性针叶林和热性竹林的分布无影响。最后,确定了9个自然植被类型的适生坡度级。
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| 关 键 词： | 自然保护区 植被 数字高程模型 坡度 分布规律 相关分析 |
| 文章编号： | 0517-6611（2007）28-08994-03 |
| 修稿时间： | 2007-05-10 |
Study on the Spatial Distribution of Vegetation along the Gradients in Nuozhadu Nature Reserve of Yunnan Province |
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| YU Qing-guo et al.Study on the Spatial Distribution of Vegetation along the Gradients in Nuozhadu Nature Reserve of Yunnan Province[J].Journal of Anhui Agricultural Sciences,2007,35(28):8994-8996. |
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| Authors: | YU Qing-guo |
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| Institution: | Yunnan Institute for Forest Inventory and Planning;Kunming;Yunnan 650051 |
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| Abstract: | In order to explore the spatial distribution law of vegetation along the gradients in Nuozhadu Nature Reserve of Yunan province,and the relativity of vegetation distribution and the gradient,on basis of digital terrain map,ArcView and ERDAS softwares were used to develop a digital elevation model.Based on the digital elevation model,the distribution map of vegetation types along 6 gradients of flat slope,gentle slope,slope,steep slope,urgent slope and risk slope and that of vegetation types along 6 gradients by 13 altitude classes were extracted by using ArcMap software and combining with vegetation map a 3D cubic vegetation map for vegetation types along 6 gradients was developed.The distribution area of 9 natural vegetation types along 6 gradients and that along 6 gradients by 13 altitude classes were counted and the relativity of the gradient and vegetation distribution was calculated.The results showed that 9 natural vegetation types were distributed in 6 gradients.Except gradientⅠ,the dominant vegetation types along other gradients were all monsoon evergreen broadleaved forest.Gradient had greater effects on the distribution of seasonal rainforest and temperate coniferous forest,had some effects on the distribution of mountain rainforest,deciduous monsoon forest and river valley savanna forest,had smaller effects on monsoon evergreen broadleaved forest had no effect on warm-hot savanna forest and tropical bamboo forest.Finally,suitable gradient for 9 natural vegetation types were confirmed. |
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| Keywords: | Nature reserve Vegetation Digital elevation model Slope gradient Distribution law Correlation analysis |
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