摘要
【目的】综合分析山楂分布与环境要素间的相互关系,以期为山楂资源的科学保护及利用提供参考。【方法】利用192个地理分布点和从Worldclim网站下载的20个1970—2000年的环境因子数据,使用MaxEnt模型预测山楂在2020年的潜在适生区,并划分适生等级,同时分析影响山楂分布的关键环境因子。【结果】MaxEnt模型预测结果准确性极好,测试数据集和训练数据集AUC值均在0.9以上;最热季降水量(贡献率28.6%)、温度季节变化标准差(27.2%)、最干季均温(13%)、最热月最高温(11.8%)、年降水量(10%)、海拔(7.7%)、平均日较差均值(1.2%)、降水量季节变异系数(0.4%)和等温性(0.2%)是影响山楂分布的关键环境因子。山楂在我国适生总面积达到了2487002 km^(2),主要分布在华北、东北、华东地区,排名前10的省份合计占到总适生面积的82.38%。山东、河北、辽宁、河南及山西五省高适生区面积最大,合计有481519 km^(2),占山楂全部高适生区面积的82.56%,临近的江苏、陕西、北京、天津、黑龙江、吉林和内蒙古有较大发展潜力。【结论】山楂适生区高度集中,适生等级从环渤海向内地省份逐渐降低,其中山东、河北、辽宁、河南及山西是适合山楂栽培种植的核心区域。
【Objective】This study was designed to comprehensively analyze the relationship between Hawthorn distribution and environmental factors,and to provide a theoretical basis for the protection and utilization of Hawthorn resources.【Method】Based on the data of 192 geographical distribution points and 20 environmental variables downloaded from Worldclim from 1970 to 2000,the potential suitable growth area of Hawthorn in 2020 was predicted using the MaxEnt model,and the suitability grades was classified.At the same time,the key environmental factors affecting the distribution were analyzed.【Result】The analysis showed that the prediction of MaxEnt is accurate,and the AUC values of both test data set and training data set are more than 0.9.Nine environmental factors such as precipitation of warmest quarter(28.6%contribution),temperature seasonality standard deviation(27.2%),mean temperature of driest quarter(13%),maximum temperature of warmest month(11.8%),annual precipitation(10%),altitude(7.7%),mean diurnal range(1.2%),precipitation seasonality coefficient of variation(0.4%)and isothermality(0.2%)are the key environmental factors that affect the distribution of Hawthorn.The total suitable area of Hawthorn in China has reached 2487002 km^(2),which is mainly distributed in North,Northeast and East China.The top 10 provinces account for 82.38%of the total suitable area.Shandong,Hebei,Liaoning,Henan,and Shanxi Provinces have the largest area,with a total of 481519 km^(2),accounting for 82.56%of all highly suitable areas.Jiangsu,Shaanxi,Beijing,Tianjin,Heilongjiang,Jilin,and Inner Mongolia have great potential for development.【Conclusion】The suitable growing area of Hawthorn is highly concentrated,and the suitability decreases gradually from the Bohai Rim to the inland provinces,among which Shandong,Hebei,Liaoning,Henan,and Shanxi are the core areas suitable for Hawthorn cultivation.
作者
王东升
赵伟
程蓓蓓
张吉军
Wang Dongsheng;Zhao Wei;Cheng Beibei;Zhang Jijun(College of Horticulture Science and Technology,Hebei Normal University of Science and Technology Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Qinhuangdao 066004)
出处
《林业科学》
EI
CAS
CSCD
北大核心
2022年第7期43-50,共8页
Scientia Silvae Sinicae
基金
河北省教育厅青年基金项目(QN2020173)
国家林木种质资源共享服务平台建设与运行服务项目(2005DKA210003)
河北科技师范学院科学研究基金项目(2016YB002、2020JK010)。
关键词
山楂
潜在适生区
最大熵模型
环境因子
Crataegus pinnatifida
potential suitable areas
MaxEnt
environment variables
