| 基于GIS的北京山区优势林分生态位分析 |
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| 引用本文： | 段晓峰,许学工. 基于GIS的北京山区优势林分生态位分析[J]. 地理科学, 2008, 28(5): 667-671. DOI: 10.13249/j.cnki.sgs.2008.05.667 |
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| 作者姓名： | 段晓峰 许学工 |
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| 作者单位： | 北京大学城市与环境学院地表过程分析与模拟教育部重点实验室,北京,100871;北京大学城市与环境学院地表过程分析与模拟教育部重点实验室,北京,100871 |
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| 基金项目： | 北京市自然科学基金(8062018)项目资助 |
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| 摘 要： | 应用生态位理论,以北京山区森林资源为研究对象,分析优势林分的空间分布及其资源利用和环境适应能力的差异。基于GIS方法,建立优势林分空间分布数据库以及资源梯度信息数据库,分别采用Levins公式和Smith公式,在水分、热量、光照和土壤质量4维环境因子梯度上测定了研究区8个优势林分的生态位宽度,采用Pianka公式测定生态位重叠。结果表明:Smith公式考虑资源可利用性,得到的生态位宽度更能客观地反映优势林分资源空间利用程度;研究区各优势林分重叠度普遍较大,反映了对环境要求的相似性及资源共享的趋势性。
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| 关 键 词： | 优势林分 生态位分析 GIS 北京山区 |
| 收稿时间： | 2007-10-15 |
| 修稿时间： | 2008-04-06 |
Niche Analysis of Dominant Forests in Mountainous Area of Beijing Based on GIS |
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| DUAN Xiao-Feng,XU Xue-Gong. Niche Analysis of Dominant Forests in Mountainous Area of Beijing Based on GIS[J]. Scientia Geographica Sinica, 2008, 28(5): 667-671. DOI: 10.13249/j.cnki.sgs.2008.05.667 |
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| Authors: | DUAN Xiao-Feng XU Xue-Gong |
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| Affiliation: | College of Urban and Environmental Sciences, Peking University, Laboratory for Earth Surface Processes, the Ministry of Education, Beijing 100871 |
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| Abstract: | Taking forest resources in the mountainous area of Beijing as the researching object,spatial distribution,resources utilization and adaptive capacity to environment of the eight dominant forests were studied by applying niche analysis.Environmental factors of forest,such as precipitation,sunshine,cumulative temperature and soil quality,were partitioned to five resources gradients.Based on geographic information systems,spatial databases were built for the distribution information of dominant forests and res... |
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| Keywords: | dominant forests niche analysis GIS mountainous area of Beijing |
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