物种潜在分布地预测系统PSDS的设计与实现.PDFVIP

生物多样性 2008, 16 (1): 96–102 doi: 10.3724/SP.J.1003.2008.07123 Biodiversity Science http: // 物种潜在分布地预测系统PSDS 的设计与实现 邓 浩1, 2 纪力强1* 1 (中国科学院动物研究所, 北京 100101) 2 ( 中国科学院研究生院, 北京 100049) 摘要: 本研究设计并实现了一个基于地理信息系统(GIS) 的仅用物种已知分布点数据预测物种潜在分布地的PSDS 系统。在这一系统中, 通过层次聚类算法对物种已知分布点数据进行处理, 减少了异常值对预测结果的影响, 从而 解决了环境包络模型预测结果过于乐观的问题, 在物种已知分布数据较少时也能取得较好的结果。该系统实现了 数据加载与导出、图层浏览与显示、生态因子分析与分布地预测、结果展示等功能, 操作方便, 简单易用。本文 以白冠长尾雉(Syrmaticus reevesii)为例, 根据4个省的少量已知分布点数据对其在国内的潜在分布地进行了预测, 获得了较理想的结果, 可为该物种的保护提供科学依据。 关键词: 物种潜在分布, 正样本, 层次聚类 Design and implementation of PSDS system, a software for predicting the potential distribution of species Hao Deng 1,2, Liqiang Ji 1* 1 Institute of Zoology, Chinese Academy of Sciences, Beijing 100101 2 Graduate University of the Chinese Academy of Sciences, Beijing 100049 Abstract: It is a critical problem in conservation biology to model the geographic distribution of a given species. Potential Species’ Distribution System (PSDS), a new GIS-based system, has been designed and im- plemented to predict the potential distribution of species by using presence data only. The result, normally overpredicted by traditional Environment Envelope Model, is improved by using hierarchical cluster arith- metic that can reduce the influence caused by outliers. The PSDS system provides functions of data input and output, displaying GIS maps, analyzing the ecological factors of habitat and predicting potential distribution of species, etc. This system is user-friendly and easy to use. As an example, the paper pre