北亚热带土壤温度水分变化.doc

北亚热带次生栎林土壤温度与水分特征研究 张家洋1 ，郭晖 1，杨文睿2，胡海波2* （1.新乡学院生命科学与技术系河南新乡45300.南京林业大学资源与环境学院江苏南京210037）摘要：为了揭示次生栎林内小气候变化规律，利用土壤温湿度传感器对不同层次土壤温度、水分的时空变化进行，结果表明：从日变化来看，4个层次日均温度从高到低依次：冬季为40cm10cm0cm5cm，春季为0cm5cm10cm40cm，夏、秋季为0cm40cm10cm5cm，从土壤温度稳定性来看冬、春、夏、秋季均为40cm10cm5cm0cm；从月变化规律来看，4个层次土壤温度呈倒U字变化，从各月温度平均值来看，各层温度差异并不显著；从季节变化来看，不同层次土壤温度季较差：0cm5cm10cm40cm；从日、月、季节变化来看，随着土壤深度的增加，温度变化幅度减小。从日、月、季节来看，各层土壤水分变化稳定、变幅很小，各层土壤含水量从高到低依次为：60cm40cm20cm10cm水分变化的幅度随着土壤深度的增加而降低Study on soil temperature and moisture content characteristics of north subtropical area secondary oak forests ZHANG Jia-yang1 , Guo Hui1,YANG Wen-rui2,HU Hai-bo2 (1.School of Life Science and Technology, Xinxiang University,Xinxiang 453003,China；.College of Forest Resource and Environment, Nanjing Forestry University, Nanjing 210037,China) Abstract:In order to bring to light the change regularity of microclimate of secondary oak forests,using the data from temperature and moisture content sensors to analyze time-space variation of soil temperature and moisture content in different levels, the results indicated: from a daily variation point of view,day average value in four levels according to the range in a diminishing sequence of temperature, 40cm10cm0cm5cm in winter, 0cm5cm10cm40cm in spring, 0cm40cm10cm5cm in summer and autumn.from stablity aspect of soil temperature, 40cm10cm5cm0cm throughout the year,the monthly change of soil temperature in four levels were on U-shaped all,from average value aspect of soil temperature in each month, temperature difference isn’t significant in different levels, the seasonal change of soil temperature in four levels were 0cm5cm10cm40cm, from the point of view throughout the day, the month and the year, the range of temperature change was smaller as the soil depth was deeper. From day-month-season aspect, soil moisture content was very stable in different levels, moisture content increased with the increasing soil depth, so it is 60cm40cm20cm10cm, but the range of soil moisture content cha