延边朝鲜族自治州小叶章(Deyeuxia angustifolia)的潜在分布预测及主要影响因子分析  

Potential distribution prediction and main influencing factors analysis of Deyeuxia angustifolia in Yanbian Korean Autonomous Prefecture

作　　者：宗瑾 曹光兰[1,2] 金雪梅 金日[1,2] 朱卫红[1,2] ZONG Jin;CAO Guanglan;JIN Xuemei;JIN Ri;ZHU Weihong(Geography and Ocean Sciences College of Yanbian University,Hunchun Jilin 133300,China;Changbai Mountain Wetland Ecosystem Function and Ecological Security Key Laboratory of Jilin Province,Changchun 130102,China)

机构地区：[1]延边大学地理与海洋科学学院,吉林珲春133300 [2]长白山湿地生态系统功能与生态安全吉林省重点实验室,长春130102

出　　处：《延边大学农学学报》2022年第2期13-20,46,共9页Agricultural Science Journal of Yanbian University

基　　金：国家科技基础资源调查项目(2019FY101703);延边大学博士启动资金[2020]36号。

摘　　要：该研究以小叶章为研究对象,采用最大熵(MaxEnt)模型和地理信息系统(GIS)对小叶章适宜生境进行建模,模拟适生区变化,运用Jackknife(刀切法)评估环境变量,并进一步模拟未来小叶章适生区分布。结果表明:汪清县是小叶章当前和未来适宜分布区最大的区域,但在未来情景模拟下,小叶章适生区在2050 s低浓度情景下分布较大,2070 s高浓度情景下分布较大,小叶章适生区整体呈减少趋势;通过影响因子研究发现,地形因素和土壤因素是影响小叶章适宜生境变化的主要原因。该研究结果可为今后延边朝鲜族自治州减缓湿地退化提供科学依据。In this study,the maximum entropy(MaxEnt)model and geographic information system(GIS)were used to establish a model of the suitable habitat of Deyeuxia angustifolia,simulate the change of the suitable habitat area,evaluate the environmental variables by Jackknife(knife cut method),and simulate the future distribution of the suitable habitat area of Deyeuxia angustifolia.The results showed that Wangqing County was the largest area of the current and future suitable distribution of Deyeuxia angustifolia.However,under the future scenario simulation,the suitable habitat area of Deyeuxia angustifolia at low(2050s)and high(2070s)concentration scenario was greatly distributed,and the overall suitable habitat area of Deyeuxia angustifolia showed a decreasing trend.The topography and soil were the main factors affecting the change of suitable habitat of Deyeuxia angustifolia.The finding of this study provided scientific basis for mitigating wetland degradation in Yanbian Korean Autonomous Prefecture in the future.

关 键 词：小叶章 潜在分布 最大熵模型 延边朝鲜族自治州 

分 类 号：S154[农业科学—土壤学]