Journal of Resources and Ecology ›› 2018, Vol. 9 ›› Issue (6): 681-689.DOI: 10.5814/j.issn.1674-764x.2018.06.011

• Resources and Ecology in the Qinghai-Tibet Plateau • Previous Articles     Next Articles

Predicting Potential Geographic Distribution of Tibetan Incarvillea younghusbandii Using the Maxent Model

KAN Aike1,2, YANG Xiao1,*, LI Guoqing3, WANG Yingjie2, TESREN Luobu4, ZENG Yelong5, CHENG Zhenlong6   

  1. 1. College of Geophysics, Chengdu University of Technology, Chengdu 610059, China;
    2. State Key Laboratory of Resource and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    3. School of Resources and Environmental Engineering, Ludong University, Yantai, Shandong 264025, China;
    4. Institute of Science & Technology Information of Tibet Autonomous Region, Lhasa 850000, China;
    5. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China;
    6. School of Environmental & Resource Sciences, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China
  • Received:2018-04-03 Revised:2018-07-28 Online:2018-11-30 Published:2018-11-30
  • Contact: *YANG Xiao, E-mail: 583140872@qq.com
  • Supported by:
    National Key Technologies Research and Development Program of China (2014BAL07B02); Tibet Autonomous Region Science-technology Support Projects (201DKJGX01-38).

Abstract: Incarvillea younghusbandii is a well-known Tibetan medicinal plant with considerable development and research value distributed widely throughout the Tibetan plateau. It is important to study spatial distribution patterns of the plant in order to develop effective protection measures. Based on field survey work and environmental data, the potential geographic distribution of Incarvillea younghusbandii was delineated using a Maximum Entropy (Maxent) model with 28 environmental variables that screened for climate, topography, human activity and biological factors. Our results showed that the main geographic range of Incarvillea younghusbandii included the valley between the Yarlung Zangbo river and the Duoxiong Zangbo river, the valley in the middle section of the Himalaya Mountains, and the area between the north side of the east section of the Himalayas and the south bank of the middle reach of the Yarlung Zangbo river. Distribution may spread to parts of the eastern Himalayas. The Jackknife test indicated that soil types, ratio of precipitation to air temperature, extreme atmospheric pressure differences and annual precipitation were the most important predictive factors for the model, while other variables made relatively small contributions.

Key words: Incarvillea younghusbandii, Himalaya Mountains, Maxent Model, potential distribution