Temporal variation of soil water and its influencing factors in hilly area of Chongqing,China

作     者：Zhong Shouqin Zhang Weihua Lv Jiake Wei Chaofu 

作者机构：College of Resources and EnvironmentSouthwest UniversityChongqing 400700China School of Computer and Information ScienceSouthwest UniversityChongqing 400700China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2014年第7卷第4期

页      面：47-59页

核心收录：

学科分类：0710[理学-生物学] 0810[工学-信息与通信工程] 09[农学] 0903[农学-农业资源与环境] 0805[工学-材料科学与工程（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 090301[农学-土壤学] 

基　　金：supported by the National Key Technology R&D Program of China(No.2012BAD05B06) 

主　　题：soil water temporal variation influencing factors hilly area 

摘      要：The paper studied the temporal variation of soil water content and its influencing factors in hilly area of Chongqing by the yearly data of 2006 and *** to precipitation anomaly percentage,the year 2006 was a dry year and 2007 a normal *** the dry year 2006,the variations of soil moisture in all three layers(0-10 cm,10-20 cm,20-40 cm)were medium(10%30%),and those of the two deeper layers were weak(CV10%).Hence,the seasonal variation of soil moisture in the humid area was large in the dry year and small in the wet *** probability distributions of soil moisture in all three layers in both dry and normal years showed single-peak ***,peak locations and values varied with different layers and *** factors affecting the temporal variation of soil moisture in the 0-10 cm layer,during March to May,the meteorological factors including temperature,sunshine and precipitation were all inversely correlated with soil water content *** correlations with average temperature and accumulated temperature were both highly significant P0.01(P=0.00).The inverse correlations with sunshine and precipitation were significant P0.05(P=0.01).Among soil physical properties,except for bulk density which was inversely correlated with soil moisture,all other properties were positively *** material was positively correlated with soil moisture,which suggested that organics had the sponge effect and contributed to soil water storage and *** the period of June to September,there was no significant correlation between soil water content and total *** meteorological factors of temperature,accumulated temperature and sunshine were all inversely and highly significantly correlated with soil water content P0.01(P=0.00).