杜意鸿.山西省核桃油脂含量对生态因子的空间响应[J].中国油脂,2020,45(9):128~133.[DU Yihong.Spatial response of walnut oil content to ecological factors[J].China Oils and Fats,2020,45(9):128~133.]
山西省核桃油脂含量对生态因子的空间响应
Spatial response of walnut oil content to ecological factors
  
DOI:
中文关键词:  核桃;油脂含量;生态因子;空间响应
英文关键词:walnut; oil content; ecological factor; spatial response
基金项目:山西省重点研发计划(2016010301100398);国家级大学生创新创业训练项目(G201910022004)
作者单位
杜意鸿 1.北京林业大学 林学院,北京 100083 
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中文摘要:
      为研究生态因子对山西省核桃油脂含量的影响,通过测定山西省10个地市的174份核桃样本数据及收集的气象资料数据,采用空间自相关性分析和地理加权回归模型,从地理信息角度对山西省核桃油脂含量受年均降水量、无霜期、年平均气温、六月平均气温、七月平均气温、八月平均气温等生态因子影响的响应情况进行了分析。结果表明:核桃油脂含量与年平均气温呈极显著负相关,相关系数为-2.288 4,与七月平均气温和无霜期呈显著负相关,相关系数分别为-3.990 5、-0.037 1,与八月平均气温呈极显著正相关,相关系数为6.912 3;年平均气温和七月平均气温对核桃油脂含量的影响程度由北向南逐渐递增,八月平均气温对油脂含量的正向贡献由北向南逐渐降低;油脂含量对无霜期的依赖程度由东向西逐渐递减。较低的年平均气温、较低的七月平均气温、较高的八月平均气温和较短的无霜期可显著提高核桃油脂含量。
英文摘要:
      To study the influence of ecological factors on the oil content of walnut from Shanxi province,the oil contents of 174 walnut samples from 10 cities in Shanxi province were determined and the corresponding meteorological data were collected, and the spatial autocorrelation analysis and geographic weighted regression model were used to explore the spatial correspondence of walnut oil content to ecological factors including annual average precipitation, annual average temperature, average temperature in June, July, August, frost-less period, etc. The results showed that extremely significant negative correlation was observed between walnut oil content and the annual average temperature (r=-2.288 4); the walnut oil content was negatively and significantly correlated with average temperature in July and the frost-less period (r=-3.990 5, r=-0.037 1); extremely significant positive correlation was observed between walnut oil content and average temperature in August (r=6.912 3). The negative influence degree of annual average temperature and average temperature in July increased from north to south. The average temperature in August had decreasing positive contribution to walnut oil content from north to south. The dependent degree of frost-less period also decreased from east to west in Shanxi province. The lower annual average temperature, the lower average temperature in July, the higher average temperature in August and the shorter frost-free period could significantly increase the oil content of walnut.
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