摘要
黄花刺茄(Solanum rostratum)是一种繁殖能力极强的检疫性杂草,一旦大面积扩散势必造成很大危害。本研究利用最大熵生态位模型(MaxEnt),结合黄花刺茄地理分布数据及7个环境因子,预测外来入侵植物黄花刺茄在中国东北地区的潜在分布区与适生等级。结果表明,影响黄花刺茄分布的主要环境因子变量为年平均温度和最湿季度平均温度;主要环境因子的适宜范围分别为年平均温度7~13℃,最湿季度平均温度21.9~24.6℃;黄花刺茄的高度适生区主要分布在辽宁西部、南部和内蒙古自治区东南部地区,并以此为中心,适生等级呈向外辐射状递减趋势分布;根据黄花刺茄适生系数,确定赤峰–林西–齐齐哈尔–肇东–岫岩–丹东一线是黄花刺茄有无扩散风险的分界线。本研究为控制黄花刺茄的扩散蔓延提供了依据。
Solanum rostratum is atype kind of quarantine weed with an extremely strong reproductive capacity, which can be quite harmful when spread over a large area. In this study, geological recordings of Solanum rostratum geological recording and 7 environmental factors were used to predict the potential distribution area and suitable levels of Solanum rostratum in Northeast China, based on the maximum entropy model (MaxEnt). The results indicated that the main determining environmental factors for the potential distribution are the Annual Mean Temperature and Mean Temperature of the Wettest Quarter. The suitable range of the main environmental factors are 7~13 ℃ and 21.9~24.6 ℃, respectively. The highly suitable distribution is mainly located in western Liaoning, southern Liaoning and southeast Inner Mongolia autonomous region, and the overall trend is gradually decreases outward from the center. On the basis of a suitable index, the Chifeng–Linxi–Qiqihar–Zhaodong–Xiuyan–Dandong line is the spread risk boundary for the distributution of the Solanum rostratum distribution. These predictions provide a basis for controlling the spread of Solanum rostratum.
作者
郭佳
曹伟
张悦
高燕
王莹莹
GUO Jia;CAO Wei;ZHANG Yue;GAO Yan;WANG Yingying(Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, Liaoning, China;University of Chinese Academy of Sciences, Beijing 100049, China;Kunyushan Forest Farm of Yantai, Yantai 264112, Shandong, China;Dongling Park Management Center of Shenyang, Shenyang 110161, Liaoning, China)
出处
《草业科学》
CAS
CSCD
2019年第10期2476-2484,共9页
Pratacultural Science
基金
东北草地植物资源专项调查(2014FY210300)
东北森林国家级保护区及毗邻区植物群落和土壤生物调查(2014FY110600-15)
关键词
黄花刺茄
MAXENT
潜在分布区
适生等级
东北地区
Solanum rostratum
Maxent
potential distribution area
suitable levels assessment
northeast China
