干旱地区农业研究2013，Vol.31Issue(2)：127-133,7.
干旱区农田土壤水分地温变化规律及其相互关系
The variation rule and interrelationship of farmland soil moisture content and ground temperature in arid areas
摘要
Abstract
Based on the data of irrigated farmland soil moisture content and ground temperature, this paper studied their variation rules and coupling relationships. The results showed that soil moisture content of each layer correlated significantly because the soil water infiltrated from top to bottom layer by layer when irrigation, and reversed when evaporation . The correlation of each layer ground temperature was obvious. Except for land surface temperature, ground temperature of soil layers had significant correlations especially the adjacent soil layers. The vertical variation characters of soil moisture content and ground temperature were distinct and dynamic. When it comes to high soil moisture content, their vertical variation coefficient was small; however variability became bigger when soil moisture content decreased. Both of the land surface ground temperature and soil moisture of 0 ~ 20 cm soil layer had middle variation, which is the highest variation of ground temperature and soil moisture content. Soil moisture content and ground temperature had obviously negative correlation. Land surface temperature was a good factor to forecast soil moisture content of the top and bottom soil layer. The linear regression equation of soil moisture content and ground temperature could be helpful for soil moisture content forecasting.关键词
土壤水分/地温/相互关系/干旱区Key words
soil moisture content/ soil temperature/ interrelationship/ arid area分类
农业科技引用本文复制引用
张建兵,熊黑钢,李宝富,龙桃..干旱区农田土壤水分地温变化规律及其相互关系[J].干旱地区农业研究,2013,31(2):127-133,7.基金项目
国家自然科学基金(41171165) （41171165）
北京市属高等学校人才强教计划资助项目(PHR200906125) （PHR200906125）
北京联合大学人才强校计划人才资助项目(BPHR2012E01) （BPHR2012E01）
