| 气候变化对桂花分布的影响研究 |
| |
| 引用本文： | 武耀星,,,张梅,,杨勇,,吕泽民,张秀卿,王亮生,.气候变化对桂花分布的影响研究[J].西北林学院学报,2022,37(4):129-134. |
| |
| 作者姓名： | 武耀星 张梅 杨勇 吕泽民 张秀卿 王亮生 |
| |
| 作者单位： | (1.贵州省植物园,贵州 贵阳 550004；2.中国科学院 植物研究所，北方资源重点实验室，北京 100093；3.内蒙古农业大学 林学院，内蒙古 呼和浩特 010019；4.中国科学院大学，北京 100049) |
| |
| 摘 要： | 桂花是我国特有树种，具有很高的经济价值而被广泛栽培，主要用于园林绿化、饮食和药用，桂花的栽培品种在城乡园林景观中较为多见，但野生资源破坏严重，生境恶化，物种多样性也随之减少。该文在不同气候情景下，对桂花的潜在适生区分布进行预测，可探究气候变化下该物种的生境变迁，并了解其地理分布与气候间的相互关系，为桂花的资源保护与利用提供重要的科学依据。利用最大熵（MaxEnt）模型，根据影响桂花适生区分布的31个环境因子和当前桂花生境的368个自然分布点，对当前和未来（2050年、2070年）桂花的潜在分布区进行预测，并用刀切法检验来评估气候因子的重要性。结果表明:1）在当前环境条件下，桂花在我国主要分布在33°N以南的地区，总潜在分布区面积约224.23×104 km2；2）干燥季节的月降水量、潮湿的频率、干旱季节的平均温度是影响桂花生境的主导环境因子；3）随着未来气候的改变，桂花的潜在分布区向北偏东高纬度地区发生迁移，西南地区潜在分布区减少，建议该地区的桂花居群优先保护。
|
| 关 键 词： | 桂花 Maxent 潜在分布区 环境因子 |
Effects of Climate Changes on the Distribution of Osmanthus fragrans |
| |
| WU Yao-xing,,' target="_blank" rel="external">,ZHANG Mei,' target="_blank" rel="external">,YANG Yong,' target="_blank" rel="external">,LV Ze-min,ZHANG Xiu-qing,WANG Liang-sheng,' target="_blank" rel="external">. Effects of Climate Changes on the Distribution of Osmanthus fragrans[J].Journal of Northwest Forestry University,2022,37(4):129-134. |
| |
| Authors: | WU Yao-xing " target="_blank">' target="_blank" rel="external"> ZHANG Mei " target="_blank">' target="_blank" rel="external"> YANG Yong " target="_blank">' target="_blank" rel="external"> LV Ze-min ZHANG Xiu-qing WANG Liang-sheng " target="_blank">' target="_blank" rel="external"> |
| |
| Institution: | (1.Guizhou Botanical Garden,Guiyang 550004,Guizhou,China; 2.Key Laboratory of Plant Resources,Beijing Botanical Garden,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China; 3.Forest College,Inner Mongolia Agricultural University,Hohhot 010019,Inner Mongolia,China; 4.University of Chinese Academy of Sciences,Beijing 100049,China) |
| |
| Abstract: | Osmanthus fragrans is a unique tree species in China with high economic values.It is widely cultivated for the purposes of landscaping,food and medicine.The cultivated varieties of O.fragrans are more common in urban and rural landscape,but the wild resources are seriously damaged,and the habitats are deteriorated.The species diversity is also reduced.The prediction of the distribution of potential suitable areas of O.fragrans under different climate scenarios can explore the habitat changes of O.fragrans,and can understand the relationship between its geographical distribution and climate to provide an important scientific basis for the protection and utilization of O.fragrans resources.According to 31 environmental factors and 368 Occurrences of O.fragrans habitats,the potential distribution areas of O.fragrans at present and in the future (2050 and 2070) were predicted by Maxent.The values of importance of climate factors were evaluated by Jackknife test.The results showed that 1) under the current environmental conditions,O.fragrans was mainly distributed in the south of 33°N in China with an area of about 224.23×104 km2.2) Mean temperature of the driest season was the dominant environmental factor for the habitat of O.fragrans.3) The potential distribution area of O.fragrans would migrate to the high latitudes of north by east with the change of climate in the future.The potential distribution area of O.fragrans in Southwest China would decrease,so it was suggested that the population of O.fragrans in this area should be protected first. |
| |
| Keywords: | Osmanthus fragransOsmanthus fragrans Maxent potential distribution area environmental factors |
|
| 点击此处可从《西北林学院学报》浏览原始摘要信息 |
| 点击此处可从《西北林学院学报》下载免费的PDF全文 |
|
