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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (5): 27-33.doi: 10.11707/j.1001-7488.20140504

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Identification of Potential Cultivation Region for Santalum album in China by the MaxEnt Ecologic Niche Model

Hu Xiu1, Wu Fuchuan2, Guo Wei1, Liu Nian1   

  1. 1. Horticulture and Landscape College, Zhongkai University of Agriculture and Engineering Guangzhou 510225;
    2. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences Mengla 666303
  • Received:2013-06-08 Revised:2013-08-17 Online:2014-05-25 Published:2014-06-06
  • Contact: 刘念

Abstract:

MaxEnt ecological model can be used to predict possible distribution range in target region according to the data of geographic distribution and environment factors, which meets the need for identifying the potential cultivation area of plants. In this study, prediction of potential cultivation area for Santalum album in China was carried out with MaxEnt modeling framework based on data of environmental factors, including temperature, rainfall and altitude, collected from wild and cultivated geographic regions. The model constructed by MaxEnt is highly reliable evaluated by Receiver operating characteristic (ROC). Response curves created by Jackknife method displayed that annual mean temperature, minimum temperature of coldest month, and mean temperature of coldest quarter, which are all related to low temperature, were the dominant environmental variables that mainly contributed to predict cultivation potential, with the proper temperature ranges of 25-30 ℃, 8-17 ℃ and 13-23 ℃, respectively. Furthermore, performances of S. album in different cultivation regions were compared with the predicted map, and the suitability degrees were divided into five categories between 0-1. The region with the suitability degrees between 0-0.4 was not suitable for cultivation, the region between 0.4-0.8 was suitable and the region between 0.8-1.0 was the most suitable. Besides of the traditionally accepted regions such as the hills of the western Hainan province, and Leizhou Peninsula of Guangdong province, the southeast coast of Guangdong and Fujian Province was also identified with high suitable for cultivation (0.8-1.0).

Key words: MaxEnt ecologic niche modeling, Santalum album, predicting potential cultivation area

CLC Number: