Soil moisture variation rule and its relationship with climate factors in the dry land of the southern of Qinghai lake from 2001 to 2019

doi:10.14088/j.cnki.issn0439-8114.2020.20.014

Abstract

Abstract: The data of soil moisture,air temperature and precipitation in dryland from 2001 to 2019 observed by Gonghe Meteorological Bureau of Qinghai province were analyzed by mathematical statistics,and upland 0~30 cm soil moisture variation characteristics in the Gonghe county over the southern of Qinghai lake was discussed,and a preliminary analysis was made to the climate impact factor.The results showed that soil moisture content increased significantly with the interannual extension in spring,but not significantly with the interannual extension in autumn.Soil moisture content in spring was higher than that in autumn,while the annual variation range in autumn was higher than that in spring.In spring,0~30 cm soil moisture content at all layers showed a significant increasing trend;In autumn,soil moisture content of 0~10 cm showed a slight increasing trend with the interannual extension;While soil moisture content of 10~20 cm and 20~30 cm showed a slight decreasing trend.In spring,the soil moisture content of 0~30 cm in each month showed a significant increase trend with the interannual variation,while the decreasing trend of soil moistur e content in September in autumn and the increasing trend of soil moisture content in October and November were not significant.Soil moisture content in May and October were significantly and positively correlated with the same month precipitation,soil moisture content in November was significantly and positively correlated with precipitation from July to September,and soil moisture in autumn was significantly and positively correlated with precipitation in September and autumn.

Key words: southern of Qinghai lake, dry land, soil moisture content, variation rule, climate factor, Gonghe county

CLC Number:

S152.7
S162

GUO Lian-yun. Soil moisture variation rule and its relationship with climate factors in the dry land of the southern of Qinghai lake from 2001 to 2019[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(20): 66-70.

References

[1] WANG J,FU B J,LU N,et al.Seasonal variation in water uptake patterns of three plant species based on stable isotopes in the semi-arid Loess Plateau[J].Science of the total environment,2017,609:27-37.
[2] 黄肖勇,李生宝.半干旱黄土丘陵区土壤水分动态变化研究综述[J].农业科学研究,2009,30(3):69-72.
[3] 李琴,陈曦,VEROUSTRAETE F,等.干旱半干旱区土壤含水量反演与验证[J].水科学进展,2010,21(2):201-207.
[4] 张超,王会肖.土壤水分研究进展及简要评述[J].干旱地区农业研究,2003,21(4):117-120,125.
[5] 张北赢,徐学选,刘江华.黄土丘陵沟壑区不同土地利用方式的土壤水分效应[J].水土保持通报,2005,25(6):5-9.
[6] 尚新明,常继青.甘肃中部地区雨水蓄集利用与农村经济发展[J].干旱地区农业研究,1999,17(2):116-121.
[7] 邵晓梅,严昌荣,徐振剑.土壤水分监测与模拟研究进展[J].地理科学进展,2004,23(3):58-66.
[8] 孔学夫,晋小军.旱地农田土壤水分动态变化规律及其应用[J].甘肃农业科技,2001(1):18-20.
[9] 李雪屏,蔺海明,晋小军.陇中半干旱地区农田土壤水分动态变化的研究[J].干旱地区农业研究,1988,6(2):46-53.
[10] 晋小军,李雪屏.陇中半干旱地区不同地类轮作周期土壤水分动态研究[J].甘肃农业大学学报,1994,29(1):49-55.
[11] 韦强军.豫西北地区土壤水分控制下限对冬小麦产量形成与水分利用的影响研究[J].中国农村水利水电,2018(3):50-54.
[12] 李德,马晓群,孙义,等.土壤湿度对冬小麦产量及其构成因素的影响[J].麦类作物学报,2015,35(7):980-987.
[13] 肖莲桂,石明章,李宗凯,等.布哈河流域高寒草原土壤湿度变化特征及与气候因子的关系[J].青海农林科技,2019(3):15-21,69.
[14] 郭连云.三江源区高寒草原土壤湿度变化特征及与气候因子的关系[J].草业科学,2018,35(1):46-53.
[15] 张国胜,徐维新,董立新,等.青海省旱地土壤水分动态变化规律研究[J].干旱地区农业研究,1999,17(1):50-56.
[16] 魏凤英.现代气候统计诊断与预测技术[M].第2版.北京:气象出版社,2007.6,37-59.
[17] 冯定原.农业气象预报和情报方法[M].北京:气象出版社,1988.101-120.