基于地理信息系统的中药材生态适宜性定量化研究

Quantitative study on ecological suitability of Chinese herbal medicine based on GIS

目的:中药材品质与其生长环境密切相关。为应用数学模型对中药材产地适宜性进行定量化研究,需要对影响中药材生长的生态因子和气候数据的插值进行研究。方法:首先从生态学和统计分析角度研究对影响中药材生长的生态指标的判断标准,以及如何计算所选择的生态因子最适宜范围值和每个生态因子的权重值。其次,由于气象要素是中药材适宜区分析的基础数据,同时气象要素的空间分布与地形环境密切相关,为此研究基于DEM的多元线性回归插值方法以使得插值结果最大程度接近于真实值。结论:从数量化角度探讨了中药材产地适宜性的因子体系选择和插值问题,并针对其中存在的关键问题进行研究。

The quality of Chinese herbal medicine is closely related to its producing region. In order to apply mathematical models to do a quantitative study on the suitability of Chinese herbal medicine, it is necessary to study on the ecological factors and the interpolation of climatic data, which influence the Chinese herbal medicine growth. The paper firstly studied the judgment standard of ecological index from the points of ecology and statistics, and how to calculate the optimum range values and the weight of each ecologi- cal factor. Secondly, meteorological element data is essential data in analyzing the suitable region of Chinese herbal medicine, and the spatial distribution of meteorological elements is closely related to terrain environment, so, in order to make the results close to true val- ue by the greatest degree. The paper adopted multiple linear regression interpolation method which based on DEM. The paper distinguished the factor system of suitable region and interpolation on the point of datumization, and made a study on it about some key issues.