| 过伐林景观要素沿环境梯度分布趋势的研究 |
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| 引用本文： | 张志,孙玉军.过伐林景观要素沿环境梯度分布趋势的研究[J].林业科学,2005,41(1):14-18. |
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| 作者姓名： | 张志 孙玉军 |
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| 作者单位： | 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083 |
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| 基金项目： | 国家十五攻关课题“东北天然林生态采伐更新技术研究与示范”(2 0 0 1BA5 10B0 70 3 )资助。 |
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| 摘 要： | 运用趋势面分析方法 ,在arcinfo的支持下 ,采用统一网格样点采样法 ,通过对不同森林类型的演替阶段定量化 ,对吉林省汪清林业局金沟岭林场的森林景观要素沿环境梯度分布的趋势进行研究。结果表明 :在金沟岭林场范围内 ,水平地理位置对景观要素空间分布的影响极为有限 ,景观要素空间格局更多地受地形特征和干扰格局的综合控制 ;研究地区海拔、坡向和坡度是控制景观要素空间分布格局的主要因素 ;在不同海拔带上 ,坡向和坡度对景观要素空间分布的作用在方向和强度上都有明显差别。
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| 关 键 词： | 趋势面分析 景观格局 空间分布 森林景观 |
| 文章编号： | 1001-7488(2005)01-0014-05 |
| 修稿时间： | 2003年11月18 |
Distribution of Landscape Elements along Environmental Gradients in Over-Cutting Forest Region |
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| Zhang Zhi,Sun Yujun.Distribution of Landscape Elements along Environmental Gradients in Over-Cutting Forest Region[J].Scientia Silvae Sinicae,2005,41(1):14-18. |
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| Authors: | Zhang Zhi Sun Yujun |
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| Abstract: | Trend surface analysis is a method commonly used in community and population ecology. In this paper, it was used to analyze the distribution of landscape elements along environmental gradients in Jinggouling forest region, Jilin Province. The results of this application showed that, at the spatial scale of the study area, horizontal geographical position as a determinant of the spatial pattern of landscape elements does not impact significantly on the spatial pattern of complex secondary forest mosaics. In contrast, aspect, slope and altitude were found to be the dominant features controlling landscape pattern in the study area. Further, the orientation and the intensity of the controlling effects of aspect and slope in the landscape distribution pattern are differed markedly at different ranges of altitude. These differences were analyzed and discussed. Some basic rules of spatial distribution of landscape elements are proposed. It was anticipated that these rules will be of benefit to further study aimed at the enhancement of sustainable management of forest and landscape planning in the region. |
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| Keywords: | trend surface analysis landscape pattern spatial distribution forest landscape |
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