基于MaxEnt模型的11种云南常见阔叶树种气候适宜性研究

Study on Climate Suitability of 11 Species of Common Broad-leaved Trees in Yunnan Based on MaxEnt Model

  • 摘要: 通过收集云南11种常见阔叶树的地理分布信息和19个环境因子,采用MaxEnt模型和ArcGIS工具模拟分析11个树种在当前气候情景下中国的潜在地理分布,进而研究这11种不同分布范围阔叶树种生境与气候因子的关系。结果表明:栓皮栎、黄连木、油桐和香椿4个全国分布树种主要受到温度影响,其中年最低温的影响最大,在−12~11 ℃左右,年平均气温和最干季平均温次之,分别为9~24 ℃和−4~21 ℃;4个西南地区的云贵川渝树种(滇杨、川滇桤木、大叶水榕和山玉兰)分布主要受到气温年较差的制约,在14 ~28 ℃左右;滇皂荚、昆明朴和滇藏玉兰3个云南分布树种则最主要受到年平均气温的影响,在12.5~22.5 ℃左右。

     

    Abstract: By collecting the geographical distribution information and 19 environmental factors of 11 common broad-leaved species in Yunnan, MaxEnt model and ArcGIS spatial analysis technology were used to simulate the potential geographical distribution of the 11 species in China under the current climate scenarios.Therefore, the relationship between the habitats of the 11 different broad-leaved species and climatic factors was studied. The results showed that 4 nationally distributed tree species (Quercus variabilis, Pistacia chinensis, Aleurites fordii, and Toona sinensis) were mainly affected by temperature, among which minimum temperature of coldest month had the greatest impact, at −12-11 ℃. Annual mean temperature took the second place, followed by mean temperature of driest quarter, 9-24 ℃ and −4-21 ℃, respectively. The 4 distributed tree species in southwest China (Yunnan, Guizhou, Sichuan, Chongqing) including Populus yunnanensis, Alnus ferdinandicoburgii, Ficus glaberrima, and Magnolia delavayi were mainly restricted by temperature changes, and the annual temperature range was about 14-28 ℃. The 3 distributed tree species in Yunnan (Gleditsia japonica var. delavayi, Celtis tetrandra, and Yulania campbellii) were mainly affected by the annual mean temperature, which was about 12.5-22.5 ℃.

     

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