林业科学2012，Vol.48Issue(2)：1-8,8.
巴山榧树地理分布格局及潜在分布区
Geographic Distribution and Potential Distribution of Torreya fargesii
摘要
Abstract
Based on data of Torreya fargesii distribution collected from literature and specimen records, as well as a field survey which covered 57 county-scale plots, the Genetic Algorithm for Ruleset Production ( GARP) modeling approach was applied to predict its potential distribution range in China and analyze its distribution pattern and endangered causes. Our results indicated that; environmental factors, such as solar radiation, minimum temperature, maximum temperature and frost days, greatly influenced size of the potential range, while flow accumulation, mean annual temperature, wet days and water vapour pressure had little impact on the distribution. T. Fargesii distributed disjunctively in subtropical mountains from 800 to 2 700 m and scattered in coniferous and broad-leaved forests, hillside thickets and ravine region. Potential distribution estimation indicated that the mountains in Central China would be the optimum habitats for T. Fargesii to grow. Potential areas that we predicted suitable for growth of T. Fargesii were much larger than its actual areas, suggesting that T. Fargesii had been experiencing its extinct process. Most of the T. Fargesii populations had a narrow distribution with very small population density, therefore, the habitat conservation would be crucial for T. Fargesii protection.关键词
巴山榧树/GARP/潜在分布区预测/地理分布/保护Key words
Torreya fargesii/GARP/potential distribution estimation/geographic distribution/conservation分类
农业科技引用本文复制引用
周先容,余岩,周颂东,何兴金..巴山榧树地理分布格局及潜在分布区[J].林业科学,2012,48(2):1-8,8.基金项目
国家自然科学基金资助项目(31070166) （31070166）
教育部博士点基金(20090181110064) （20090181110064）
重庆市教委科技项目(KJ091314). （KJ091314）
