基于DEM的桂林市罗汉果气候适宜性分布

为充分利用当地生态环境条件特征，提升罗汉果产量与品质，促进罗汉果稳定、高效生产，科学制定桂林市罗汉果发展规划。利用桂林市14个国家站1981—2017年气象数据，结合数字高程模型（DEM），采用层次分析法（AHP），从气候、地形等方面构建桂林市罗汉果气候适宜性指数，采用自然断点法（Natural Breaks）将桂林市罗汉果适宜性指数划分为适宜区、次适宜区和不适宜区。结果表明：桂林市中部、西南及东北部较适宜罗汉果种植，该区域内水热条件较好，温度、光照适宜，海拔高度适中，能够较好满足罗汉果生长发育所需生态条件。不适宜区主要位于北部猫儿山山脉地区、越城岭、海洋山山脉及都庞岭等地区，该区域内海拔较高，气候条件不能满足罗汉果生长发育所需，不适宜罗汉果种植。

Climatic Suitability Distribution of Momordica Grosvenori in Guilin Based on DEM Data

In order to make full use of the ecological environment characteristics, improve the yields and quality of Momordica grosvenori and promote the stable and efficient production, it is essential to scientifically formulate the plan of Momordica grosvenori production in Guilin. Based on the data of 14 meteorological stations in Guilin from 1981 to 2017 with combining with the Digital Elevation Model (DEM) data and using the method of Analytic Hierarchy Process (AHP), the climatic suitability index of Momordica grosvenori in Guilin is constructed by two factors of climate and terrain. The climatic suitability index is classified into suitable, sub suitable and unsuitable areas by using the method of Natural Breaks. The results show that the central, southwest and northeast parts of Guilin are more suitable for planting grosvenori with a good hydrothermal condition, suitable temperature and sunlight and moderate altitude. Besides, the Maoer Mountain, Yuecheng Mountain, Haiyang Mountain and Dupang Mountain in Guilin belong to unsuitable areas, for having higher altitude and worse climate condition and not meeting the needs of the growth and development of Momordica grosvenori.