Kang Chuan-Zhi, Zhou Tao, Jiang Wei-Ke, Guo Lan-Ping, Zhang Xiao-Bo, Xiao Cheng-Hong, Zhao Dan
Guiyang University of Chinese Medicine, Guiyang 550002, China.
State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
Zhongguo Zhong Yao Za Zhi. 2016 Jul;41(13):2391-2396. doi: 10.4268/cjcmm20161304.
This paper is aimed to study the potential ecological suitability regionalization of Pseudostellaria heterophylla for selecting GAP planting base location and designing rational production layout. The ecological factors and contribution rate were determined by using maximum entropy (Maxent) model. Then, the information entropy theory was used to determine the relative importance of each environmental factor, and thus to determine the most limiting habitat criteria. Finally, the probable spatial distribution of P. heterophylla was determined based on GIS spatial analysis of habitat conditions. Meanwhile, the optimal index range of ecological factors was quantified. The moderately and highly suitable habitats were mainly located in Shibing, Huangping, Cengong, the middle and east of Kaili, the south of Yuqing, the west of Tongren. The percentage of moderately and highly suitable habitats for P. heterophylla in the study area was 3.64%, and its area was 6 405.39 km². The results also showed that seven dominant ecological factors controlled the distribution of P. heterophylla. These factors included agrotype, the warmest rain, aspect, slope, the warmest and highest temperature, contents of soil organic carbon, and the driest month precipitation. The habitat suitability assessment model based on GIS and Maxent model theory could accurately evaluate the habitat suitability distribution of P. heterophylla in Guizhou. In addition, we recommended Cengong and Zhenyuan county in Guizhou province as the worthy developing potential planting areas.
本文旨在研究太子参潜在生态适宜性分区，以选择GAP种植基地位置并设计合理的生产布局。利用最大熵（Maxent）模型确定生态因子及其贡献率。然后，运用信息熵理论确定各环境因子的相对重要性，进而确定最具限制性的生境标准。最后，基于生境条件的GIS空间分析确定太子参可能的空间分布。同时，量化了生态因子的最佳指标范围。中度和高度适宜生境主要位于施秉、黄平、岑巩、凯里中部和东部、余庆南部、铜仁西部。研究区内太子参中度和高度适宜生境的比例为3.64%，面积为6405.39平方千米。结果还表明，7个主要生态因子控制着太子参的分布。这些因子包括农业类型、最暖季降水量、坡向、坡度、最暖月和最高温度、土壤有机碳含量以及最干月降水量。基于GIS和Maxent模型理论的生境适宜性评价模型能够准确评估贵州太子参的生境适宜性分布。此外，我们推荐贵州省岑巩县和镇远县作为具有开发潜力的种植区。
