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余杭蜜梨种植适宜性分析与区划
效文娟1, 冯妍2, 何永健3
1.三门峡市气象局;2.安徽省气象科学研究所;3.南京信息工程大学
摘要:
基于气候和地形因子对浙江余杭区蜜梨种植适宜性进行分析与区划研究,其中,气候因子3个,分别为≥10℃活动积温、年降雨量和年日照时数;地形因子2个,分别为海拔高度和坡度。首先利用分布式模型,对所有气候因子进行空间分布的精细化模拟。其次,利用层次分析法确定各个因子的权重,利用加权求和法建立蜜梨种植适宜性区划评估模型。最后,结合各个因子适宜性等级的量化指标,获得蜜梨种植适宜性综合评价得分的精细化空间分布,并将浙江余杭区分为适宜、较适宜和不适宜三个种植区。结果表明,余杭区蜜梨种植较适宜区在各个乡镇都有分布,适宜区主要分布在余杭西部地区,不适宜区较少,主要分布在百丈镇、鸬鸟镇、黄湖镇等地区的地形背阴地带。
关键词:  蜜梨;种植适宜性;地理信息系统(GIS)
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基金项目:国家科技攻关计划
Analysis and regionalization of planting suitability of mili pear in Yuhang
Xiao Wenjuan1, Feng Yan2, He Yongjian3
1.Sanmenxia Meteorological Bureau;2.Anhui Institute of Meteorological Sciences;3.Nanjing University of Information Science & Technology
Abstract:
The study on the suitability regionalization of mili pear cultivation is of great significance for the sustainable and stable development of mili pear planting in yuhang district, Zhejiang province. Based on the climate and terrain factors, we studied the planting suitability of pear in yuhang district. Among these factors, 3 climate factors are the ≥10℃ accumulated temperature, the annual precipitation and the annual sunshine duration respectively, 2 terrain factors are altitude and slope. Firstly, the spatial distribution of all climate factors is simulated by the distributed model. Secondly, the weight of each factor was determined by analytic hierarchy process (AHP), and the weighted summation method is adopted to establish the regionalization assessment model of mili pear planting. Finally, the fined spatial distribution of the comprehensive evaluation score of planting suitability of melli pear was obtained by combining the quantitative indexes of the suitability grades of each factor. The results showed that the sub-suitable area for mili pear planting was distributed in all towns and villages in yuhang district, the suitable area was mainly distributed in the western part of yuhang, and the unsuitable area was less which mainly distributed in the shady terrain of baizhang town, luniao town and huanghu town.
Key words:  mili pear; planting suitability; geographic information system (GIS)