山西省土壤湿度时空分布及气候因素的耦合

了解山西省土壤湿度状况变化规律,可以为农业旱情监测提供科学依据。本论文利用2017年3月到2018年2月山西省土壤湿度数据、降水量数据和气温数据,利用线性趋势和相关分析等方法分析研究区土壤湿度的时空变化以及土壤湿度对气候变化的响应。结果表明山西省的平均土壤湿度分布特征为南高北少,东高西少,呈现出东南向西北递减的趋势。在季际-月际时间尺度分布下,土壤湿度在秋季达到高峰,且各区域表层土壤湿度与空气温度有着显著的负相关关系,而与降水量有着显著的正相关关系。

Spatio- temporal Distribution of Soil Humidity and Coupling of Climate Factors in Shanxi Province.

Understanding the changing law of soil moisture in Shanxi Province can provide scientific basis for agricultural drought monitoring. Using the data of soil moisture, precipitation and temperature in Shanxi Province from March 2017 to February2018,this paper analyzed the coupling relationship between soil moisture and climatic factor by the method of linear trends and related analyzed.The results showed that:1. The average soil moisture distribution in Shanxi Province is characterized by high south and east and low north and west. It has a downward trend from southeast to northwest.2.Precipitation and temperature in Shanxi Province peaked in summer, while soil moisture peaked in autumn.3.Distribution of the season-monthly time scale,there was a significant positive correlation between surface soil moisture and precipitation in each region in the study area,while there was a significant negative correlation between surface soil moisture and temperature.So the change of temperature and precipitation is the main factor affecting the change of surface soil moisture in the study area.