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降水增加对黄土高原深层土壤水分的影响
岩晓莹1; 马理辉1,2; 刘铮1; 柯增鸣2; 李娟娟1
2020
Source Publication土壤通报
Volume51Issue:3Pages:614-620
Abstract
为了解降水增加情况下,黄土高原土壤储水量是否增加以及深层土壤水分的变化趋势,2018 年对陕西省绥德境内的油
松林和柠条林土壤水分进行了测定,并将其与 2001 年和 2006 年的同一样地土壤水分数据进行对比分析,结果表明:研究区近
20 年降水量呈增加趋势,2009 ~ 2018 年该区域年平均降水量比 1999 ~ 2008 年的平均降水量增加了 156 mm。油松和柠条林地
深层土壤水分呈波浪形变化,且深层土壤总储水量呈现 2018 年 > 2001 年 > 2006 年,这种变化与 1999 ~ 2018 年降水变化趋
势相一致。深层土壤储水量年际变化与植被类型有关,即油松林地深层土壤水分年际变化显著,柠条林则不显著。短时间尺度
内(< 6 年)的降水对深层土壤储水量有影响,影响深度大约为 0 ~ 5.0 m,长时间尺度(> 5 年)的降水对深层土壤储水量的影响
深度会随时间加深,并且长时间尺度的降水可能会导致土壤水分“高湿层”下移现象出现。
为了解降水增加情况下,黄土高原土壤储水量是否增加以及深层土壤水分的变化趋势,2018 年对陕西省绥德境内的油
松林和柠条林土壤水分进行了测定,并将其与 2001 年和 2006 年的同一样地土壤水分数据进行对比分析,结果表明:研究区近
20 年降水量呈增加趋势,2009 ~ 2018 年该区域年平均降水量比 1999 ~ 2008 年的平均降水量增加了 156 mm。油松和柠条林地
深层土壤水分呈波浪形变化,且深层土壤总储水量呈现 2018 年 > 2001 年 > 2006 年,这种变化与 1999 ~ 2018 年降水变化趋
势相一致。深层土壤储水量年际变化与植被类型有关,即油松林地深层土壤水分年际变化显著,柠条林则不显著。短时间尺度
内(< 6 年)的降水对深层土壤储水量有影响,影响深度大约为 0 ~ 5.0 m,长时间尺度(> 5 年)的降水对深层土壤储水量的影响
深度会随时间加深,并且长时间尺度的降水可能会导致土壤水分“高湿层”下移现象出现。
Other Abstract
In order to
explore the effect of precipitation on soil water storage at different depths in the Loess Plateau,
soil moisture contents
under Pinus tabulaeformis and Caragana microphylla Lam. in Suide, Shaanxi Province were
measured and compared with the data
in 2001 and 2006. The results showed that the precipitation increased in the
past 20 years. The precipitation in the
region increased by
156 mm in 2009 - 2018 compared with that in 1999 -
2008. Deep soil water content under the two forests showed
a wave-like pattern. The total water storage at a deep soil
decreased in the order of 2018
> 2001 > 2006 and was consistent with the
change trend of precipitation from 1999 to
2018. Its interannual variation
was related with vegetation
types. That is to
say, the interannual variation of soil water
content at the deep depth under Pinus tabulaeformis forest
was significant,
while that under
Caragana microphylla Lam
forest was not. The precipitation at a short time
scale (< 6 years) showed
an effect on the
water storage at 0 - 5.0 m
soil depth. The effect of long-term precipitation
(> 5 years) on soil water
storage deepened with time, and long-term
precipitation
may lead to a "high humidity layer" of soil water to move down.
Keyword降水变化 黄土高原 深层土壤水分 土壤储水量 年际变化
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/10038
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学
2.西北农林科技大学水土保持研究所
Recommended Citation
GB/T 7714
岩晓莹,马理辉,刘铮,等. 降水增加对黄土高原深层土壤水分的影响[J]. 土壤通报,2020,51(3):614-620.
APA 岩晓莹,马理辉,刘铮,柯增鸣,&李娟娟.(2020).降水增加对黄土高原深层土壤水分的影响.土壤通报,51(3),614-620.
MLA 岩晓莹,et al."降水增加对黄土高原深层土壤水分的影响".土壤通报 51.3(2020):614-620.
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