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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[J]
Authors
LI Bao-fu
LONG Tao
+11 more
XIONG Hei-gang
ZHANG Jian-bing
中国科学院南京土壤研究所,江苏南京,210008
中国科学院新疆生态与地理研究所,新疆乌鲁木齐,830011
北京联合大学应用文理学院,北京100083
张建兵
教育部绿洲重点实验室,新疆乌鲁木齐830046
李宝富
熊黑钢
重庆市永川区国土资源和房屋管理局,重庆,402160
龙桃
Publication date
1 January 2013
Publisher
Abstract
以干旱区农田灌溉后土壤水分、地温实测数据为基础,研究了其土壤水分、地温各自的变化规律及两者的相互关系.结果表明,各层含水量之间具有高相关性,基本达到了极显著的水平.这与土壤水分灌溉时由上而下的逐渐下渗,以及蒸发时由下而上的逐层上升有密切的关系.各层地温间的相关性大,除地面温度外,其余各层地温间的相关水平为显著或极显著水平,且相邻土层地温间均呈极显著相关.土壤水分及地温剖面垂直变化特征明显,并具有动态性.土壤水分含量大时,两者的垂直变异系数小,反之变异系数大.0~20 cm、地面(0 cm)分别为剖面含水量及地温变异强度的最大层,属中等变异强度.土壤水分及温度之间的负相关性明显.地面温度是预测表层、底层土壤水分的良好指标,利用回归分析法建立的土壤水分与地温间的函数关系可为推测土壤水分提供依据
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016