Page 71 - 2020年2月第31卷第3期

基于MaxEnt和ArcGIS的定西市蒙古黄芪适宜性区划研究 Δ

1＊
1，2 #
王 莉 ，韦翡翡 ，成 希 ，赵文龙 ，晋 玲 [1.甘肃中医药大学药学院，兰州 730000；2.中（藏）药资源研
1，2
1
1
究所，兰州 730000]
中图分类号 R-1 文献标志码 A 文章编号 1001-0408（2020）03-0321-04
DOI 10.6039/j.issn.1001-0408.2020.03.13

摘 要 目的：对定西市蒙古黄芪进行生态适宜性区划研究。方法：以定西市1 001批蒙古黄芪为考察样本（以每个有蒙古黄芪栽
培的自然村为采集单位进行样本采集），从定西市经济作物技术推广站中获取其经、纬度信息，并从《中药资源空间信息网格数据
库》中获取其55项环境生态因子（包括气候、地形、土壤等）信息。结合经、纬度信息和环境生态因子信息，以75％样本为训练集建
立最大熵模型（MaxEnt模型），筛选出主要生态因子，并以另外25％样本为验证集进行模型验证。随后，应用地理信息系统（Arc-
GIS）对蒙古黄芪的适宜生长区进行划分。结果：建立的MaxEnt模型预测效果良好（训练集和验证集样本受试者工作特征曲线下
面积分别为0.970、0.968）。共筛选出海拔、降水量、温度等8个主要生态因子（贡献率总和为98.90％）；结合分析系统发现，海拔在
1 800～2 650 m、4月降水量在25～50 mm、最冷月最低温在－16～－8 ℃、最湿月降水量在95～110 mm、温度季节性变化标准差
在70～80、12月平均气温在－6～－3 ℃、10月降水量在30～50 mm、12月降水量在0～10 mm为定西市蒙古黄芪适宜生长的环境
参数。结合ArcGIS分析结果，在定西市境内蒙古黄芪普遍适宜生长；在临洮县西北部、安定区北部、通渭县南部、陇西县南部少量
地区、岷县南部少量地区以及渭源县、漳县、岷县交界处不适宜生长。结论：本研究建立的模型分析结果与实际考察符合，可为定
西市蒙古黄芪的种植区域规划提供参考。
关键词 蒙古黄芪；定西市；适宜性区划；地理信息系统

Study on Suitability Zoning of Astragalus membranaceus var. mongholicus in Dingxi City Based on MaxEnt
and ArcGIS
1，2
1，2
1
1
1
WANG Li ，WEI Feifei ，CHENG Xi ，ZHAO Wenlong ，JIN Ling [1.School of Pharmacy，Gansu University of
TCM，Lanzhou 730000，China；2.China（Tibet）Pharmaceutical Resources Research Institute，Lanzhou 730000，
China]
ABSTRACT OBJECTIVE：To study the ecological suitability zoning of Astragalus membranaceus var. mongholicus in Dingxi
city. METHODS：Taking 1 001 batches of A. membranaceus var. mongholicus in Dingxi city as the investigation samples（each
natural village with A. membranaceus var. mongholicus cultivation as the collection unit），the longitude and latitude information of
them were obtained from Dingxi economic crop technology promotion station，and 55 environmental ecological factors（including
climate，terrain，soil，etc.）were obtained from the Grid Database of Spatial Information of TCM Resources. Combined with the
information of longitude，latitude and environmental ecological factors，the maximum entropy model （MaxEnt model） was
established with 75％ samples as the training set，and the main ecological factors were screened out，and 25％ samples were set as
the validation set for model validation. Then the suitable growing areas of A. membranaceus var. mongholicus were divided by using
ArcGIS. RESULTS：Established MaxEnt model had good prediction（the area under the working characteristic curve of subjects in
training set and verification set was 0.970 and 0.968）. Eight main ecological factors，such as altitude，precipitation and temperature，
were selected（the total contribution rate was 98.90％）. The comprehensive analysis found that the altitude was 1 800 to 2 650 m，
the average precipitation in April was 25 to 50 mm，the lowest temperature of the coldest month was －16 to －8 ℃，the wettest
monthly precipitation was 95 to 110 mm，and the seasonal variation of temperature was 70 to 80，the average temperature in
December was －6 to －3 ℃ ，the average precipitation in October was 30 to 50 mm，and the average precipitation in December
was 0 to 10 mm，which was the suitable environmental parameter for the growth of A. membranaceus var. mongholicus in Dingxi
city. Based the results of ArcGIS analysis，in Dingxi city，A. membranaceus var. mongholicus was generally suitable for growth；in
the northwest of Lintao county，the north of Anding district，the south of Tongwei county，a small area in the south of Longxi
county and the south of Minxian county，the border between
Δ 基金项目：甘肃省基础研究创新群体项目（No. 1606RJIA323）；
Weiyuan county，Zhangxian county and Minxian county，A.
国家中药标准化项目（No.ZYBZH-Y-GS-10-A05）；甘肃省省级中药原
membranaceus var. mongholicus was not suitable for growth.
料质量监测技术服务中心建设项目
CONCLUSIONS： Ther results of established model is in
＊硕士研究生。研究方向：中药资源开发与质量综合评价。
E-mail：961308817@qq.com line with the actual investigation， can provide reference
# 通信作者：教授，博士生导师，博士。研究方向：中药资源开发 for the planting regional planning of A. membranaceus var.
与质量综合评价。E-mail：zyxyjl@163.com mongholicus in Dingxi city.

中国药房 2020年第31卷第3期 China Pharmacy 2020 Vol. 31 No. 3 ·321 ·