摘要
研究选择青海湖不同沙漠化治理区,通过野外采样及室内数据分析,对不同季节的土壤含水量进行测定.结果表明:土壤平均含水量在6月和8月最大,4月和9月较低.克土-早期灌丛治理区,4月和6月土壤含水量表层较低,30cm处达到峰值.8月和9月表层土壤含水量最高,20cm处最低.克土-草方格,4月份表层土壤水分偏低,10cm以下开始上升,6月份和8月份土壤水分基本一致.9月份,表层土壤含水量较低,20cm处达到峰值.沙岛固定沙丘及沙棘灌丛,4月、6月和8月土壤含水量表层偏低,10cm以下开始下降,20cm以后逐渐增加,70cm处最高,9月份,表层土壤含水量开始下降,10cm处较低,之后逐渐增高.示范区草方格,表层土壤水分6月和8月高于4月和9月,4月和6月均为逐渐增加趋势,8月,10cm处达到峰值,之后下降,20cm以下变化较稳定,9月份土壤水份垂直变化一直波动.流动沙丘顶部、迎风坡和背风坡表层土壤含水量较低,表层以下土壤含水量逐渐增加.湖东种羊场流动沙丘草方格区,土壤含水量表层较低,表层至30cm处表现为上升,以下变化幅度较弱.
Through field sampling and indoor data analysis,we measured soil moisture of desertification combating areas around Qinghai Lake in different seasons,and obtained the following results.The average of soil water content in June and August were both the highest,which in the April and September were lower.In early combating areas of Ketu,in April and June,the soil water content of the upper soil were lower,and the soil water content of the depth of 30 cm reached to the peak value.In August and September,the upper soil water content were the highest,which in the depth of 20 cm was lower.In straw checkerboard barriers of Ketu,in April,the soil water content of the upper soil was lower,the soil water content of the depth below 10 cm was beginning to rise.The vertical change of the soil water contents in June and August were not different.In September,the upper soil water content was lower and which in the depth of 20 cm was the highest.In the fixed dune of Shadao,in April,June and August,the upper soil water content were lower,the soil water content of the depth below 20 cm was beginning to rise,which in the depth of 70 cm was the highest.In September,the upper soil water content was lower,which in the depth of 10 cm was lowest,and below the depth of 10 cm was beginning to rise.In straw checkerboard barriers of demonstration plot,the vertical change of the soil water content in April and June were rising with the depth.In August,the soil water content in the depth of 10 cm was the highest,and below the depth of 10 cm was declining and below the depth of 10 cm was stable.The soil water content of the upper of the top of moving dune,the windward slope and the leeward slope were lower,and were rising with the depth.In the staff checkerboard of the upward side of east Lake,the upper was lower,the soil water content was increasing from surface to the depth of 30 cm,and below the depth of 30 cm was changed a little.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2015年第1期131-139,共9页
Journal of Gansu Agricultural University
基金
国家自然科学基金项目(41201087)
宁夏大学自然科学研究基金(ZR1156)
关键词
青海湖
沙漠化治理
土壤含水量
动态变化
Qinghai Lake
desertification combating
soil water content
dynamic change
