摘要
【目的】优化樟子松已有种植区的布局以及科学推广引种其适宜种植范围。【方法】采用环境因子和地理分布数据,结合ArcGIS与MaxEnt模型,分析影响樟子松分布的主导环境因子以及预测其潜在地理分布。【结果】(1) MaxEnt模型在樟子松潜在生境模拟中,AUC=0.821,有较好精度。(2)最潮湿月份的降水量(BIO13)、等温性(BIO3)和最潮湿季节的平均温度(BIO8)和最干燥季节的平均温度(BIO9)为影响樟子松分布的主导环境因子。(3)研究区樟子松适生区总面积为86.997 8万km^(2),其中高适生区面积为30.811 7万km^(2),占内蒙古总面积的25.76%,主要集中在呼伦贝尔、兴安盟、锡林郭勒盟、赤峰和呼和浩特等地区。【结论】东北地区樟子松潜在分布范围最广,且气候因子是樟子松分布的主要影响因子,该研究结果可为各地区加强樟子松防风固沙林建设提供依据。
【Objective】 This study aimed to optimize the layout of the existing planting area of Pinus sylvestris and identify suitable planting areas for future introduction and extension of planting scientifically.【Method】 This paper used environmental factors and geographical distribution data,combined with ArcGIS and MaxEnt model,to predict the dominant environmental factors and potential geographical distribution of P.sylvestris.【Result】(1) In the simulation of potential habitat of P.sylvestris,the MaxEnt model has a high accuracy with AUC=0.821.(2) Precipitation in the wettest month(BIO13),isotherm(BIO3),mean temperature of wettest quarter(BIO8)and mean temperature of driest quarter(BIO9) were the most important environmental factors affecting the distribution of P.sylvestris.(3) The total suitable growing area of P.sylvestris in the study area is 86.997 8 km^(2),with the highly suitable area being 30.811 7 km^(2),which is 25.76% of the total Inner Mongolia area.These highly suitable areas were mainly distributed in Hulunbuir,Xing'an League,Xilin Gol League,Chifeng and Hohhot.【Conclusion】 This study suggests that the potential distribution of P.sylvestris is the widest in northeast China,with climate being the main influential factors for the distribution.These results provide a basis for strengthening the construction of windbreak and sand fixation forests of P.sylvestris in different regions.
作者
宋慧芳
党晓宏
高永
蒙仲举
孙艳丽
SONG Huifang;DANG Xiaohong;GAO Yong;MENG Zhongju;SUN Yanli(College of Desert Control,Inner Mongolia Agricultural University,Hohhot 010000,China;National Positioning Observation and Research Station of Guhangjin Desert Ecosystem in Inner Mongolia,Ordos 017000,Inner Mongolia,China)
出处
《四川农业大学学报》
CSCD
北大核心
2023年第2期203-208,248,共7页
Journal of Sichuan Agricultural University
基金
内蒙古自治区科技重大专项“浑善达克沙地植被快速营建技术研究”。
关键词
樟子松
最大熵模型
地理信息系统
潜在分布
Pinus sylvestris
maximum entropy model
geographic information system
the potential distribution
