欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (14): 159-163.doi: 10.11924/j.issn.1000-6850.casb15110123

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

青海贵德旱作区春秋季土壤水分变化特征

蓟尚玛1,郭连云2   

  1. (1青海省兴海县气象局,青海兴海 813399；2青海省海南州气象局,青海共和 813099）
  • 收稿日期:2015-11-24 修回日期:2016-04-30 接受日期:2015-12-24 出版日期:2016-05-17 发布日期:2016-05-17
  • 通讯作者: 蓟尚玛
  • 基金资助:
    青海省海南州科技局项目“气候变化对海南州农牧业生产的影响研究”(2015-KH05)。

Variation Characteristics of Arid Farmland Soil Moisture in Spring and Autumn in Guide, Qinghai

Ji Shangma1, Guo Lianyun2   

  1. (1Xinghai Meteorological Bureau of Qinghai, Xinghai Qinghai 813399;2Meteorological Bureau in Hainan Prefecture of Qinghai Province, Gonghe Qinghai 813099)
  • Received:2015-11-24 Revised:2016-04-30 Accepted:2015-12-24 Online:2016-05-17 Published:2016-05-17

PDF (PC)

351

摘要： 运用青海省贵德县气象局观测的2002—2014年旱地土壤水分资料，分析了该地区0~30 cm土壤水分变化特征，结果显示：2002—2014年，春季贵德旱地0~30 cm土壤含水量呈显著降低趋势，秋季土壤含水量则呈不显著增多趋势，年际变化很明显。各层土壤水分变化趋势与整体一致，秋季各层土壤含水量的变幅较春季大。0~10、10~20 cm土壤含水量一年中的最高、最低值分别出现在9月下旬和3月上旬，而20~30 cm土壤含水量的最高、最低值分别出现在10月上旬和4月中旬。自2000年以来，贵德旱作地区春季气温显著升温，但降水却无明显变化，而秋季平均气温升温趋势不明显，降水量却呈显著增多，这种气候趋势与春季土壤含水量逐年减少、秋季土壤含水量逐年增加的结论相一致。

关键词: 地鳖, 地鳖, 多肽, 多糖, 自由基, 丙二醛

Abstract: The variation characteristics of 0-30 cm soil moisture in Guide, Qinghai were analyzed based on the arid farmland soil moisture data of Guide weather bureau from 2002 to 2014. The results showed that soil moisture of 0-30 cm layer in arid farmland decreased significantly in spring during 2002 to 2014, but it showed an insignificant increasing trend in autumn, interannual variation was obvious. Soil moisture content in each soil layer followed the same change rule, but the variation amplitude of autumn was higher than that of spring. The highest and lowest soil moisture content of 0-10 and 10-20 cm soil layer presented in late September and early March, while the highest and lowest soil moisture content of 20-30 cm layer presented in early October and mid-April. Since 2000, the spring air temperature rose significantly, but the precipitation had no apparent change, while the average autumn temperature increase was not obvious, but the precipitation increased significantly. This climate trend was consistent to the conclusion that the soil moisture content decreased year by year in spring and increased year by year in autumn.