[1]任鸿武,汪 星,吕 雯,等.宁南黄土丘陵区人工柠条林与苜蓿地土壤水分特征[J].水土保持研究,2025,32(02):158-166,177.[doi:10.13869/j.cnki.rswc.2025.02.003]
　Ren Hongwu,Wang Xing,L Wen,et al.Soil moisture characteristics of artificial Caragana korshinskii Kom. woodland and Medicago sativa L. field in loess hilly area of southern Ningxia[J].Research of Soil and Water Conservation,2025,32(02):158-166,177.[doi:10.13869/j.cnki.rswc.2025.02.003]
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宁南黄土丘陵区人工柠条林与苜蓿地土壤水分特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 32 期数: 2025年02期 页码: 158-166,177 栏目: 出版日期: 2025-01-20
Title:
Soil moisture characteristics of artificial Caragana korshinskii Kom. woodland and Medicago sativa L. field in loess hilly area of southern Ningxia
文章编号:
1005-3409(2025)02-0158-09
作者:
任鸿武1, 汪 星1, 吕 雯2,3, 滕 远1, 杨赵昱2, 侯嘉娜1, 马维薇2
(1.宁夏大学 林业与草业学院, 银川 750021; 2.宁夏大学 生态与环境学院, 银川 750021; 3.宁夏大学 西北退化生态系统恢复与重建教育部重点实验室, 银川 750021)
Author(s):
Ren Hongwu1, Wang Xing1, Lü Wen2,3, Teng Yuan1, Yang Zhaoyu2, Hou Jiana1, Ma Weiwei2
(1.School of Forestry and Prataculture, Ningxia University, Yinchuan 750021, China; 2.School of Ecology and Environment, Ningxia University, Yinchuan 750021, China; 3.Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwest China, Ministry of Education, Ningxia University, Yinchuan 750021, China)
关键词:
土壤水分;  柠条苜蓿;  土壤水分入渗;  土壤储水变化量
Keywords:
soil moisture;  Caragana korshinskii Kom.;  Medicago sativa L.;  variation of soil water storage
分类号:
S152.7
DOI:
10.13869/j.cnki.rswc.2025.02.003
文献标志码:
A
摘要:
[目的]探究柠条与苜蓿土壤水分特征,阐明宁南山区人工植被对土壤水分的影响,进而为生态环境高质量发展提供科学依据。[方法]采用土壤水分自动监测系统对宁夏固原彭阳县人工种植柠条林地(20 a)与紫花苜蓿地(18 a)0—200 cm土层生长季土壤水分进行了长期定位监测。[结果](1)人工柠条林地与苜蓿地土壤含水量差异显著(p<0.05),0—200 cm土层柠条林地土壤含水量平均值大于苜蓿地,苜蓿地土壤含水量下降幅度大于柠条林地;(2)柠条林地0—200 cm土层土壤含水量先增大后减小再增大,苜蓿地整体呈现“S”形;(3)人工柠条林地与苜蓿地分别在60—200 cm土层和40—200 cm土层土壤水分垂直变异系数趋于稳定,柠条林地在30—40 cm土层土壤水分变异系数大于苜蓿地;(4)人工柠条林地0—200 cm土层平均土壤储水量较苜蓿地显著提高(p<0.05),5月7日—6月7日和6月26日—7月9日人工柠条林地平均土壤储水量高于苜蓿地;(5)人工柠条林地与苜蓿地0—200 cm土层土壤含水量对降雨的响应最深层为人工柠条林地40 cm土层、苜蓿地30 cm土层,人工柠条林地0—30 cm土层土壤含水量对降雨的响应速度大于苜蓿地。[结论]苜蓿地0—200 cm土层平均土壤含水量相较于人工柠条林地较低,且40—200 cm土层土壤含水量受降水补给有限,易造成水分亏缺。
Abstract:
[Objective]The aims of this study are to explore the soil moisture characteristics of Caragana korshinskii Kom. and Medicago sativa L., to elucidate the impact of artificial vegetation on soil moisture in the southern mountainous areas of Ningxia, and to provide scientific basis for high-quality development of the ecological environment. [Methods]An automatic soil moisture monitoring system was used to monitor the soil moisture in 0—200 cm soil layer of planted Caragana korshinskii Kom. woodland(20 a)and Medicago sativa L. field(18 a)in Pengyang County, Guyuan City, Ningxia. [Results](1)There were significant differences in soil moisture contents of artificial Caragana korshinskii Kom. woodland and Medicago sativa L. field(p<0.05). The average soil moisture content in 0—200 cm soil layer was higher in Caragana korshinskii Kom. forest than that in Medicago sativa L. field. The decrease of soil water content in Medicago sativa L. field was greater than that in Caragana korshinskii Kom. forest.(2)The soil water content in 0—200 cm layer of Caragana korshinskii Kom. forest increased first, then decreased and then increased again. The overall trend of soil water content for Medicago sativa L. field showed a S-shaped pattern.(3)The vertical variation coefficient of soil moisture in artificial Caragana korshinskii Kom. forest and Medicago sativa L. field tended to be stable in 60—200 cm soil layer and 40—200 cm soil layer, respectively, and the variation coefficient of soil moisture in artificial Caragana korshinskii Kom. woodland was greater than that in Medicago sativa L. field in 30—40 cm soil layer.(4)The average soil water storage in 0—200 cm soil layer of artificial Caragana korshinskii Kom. woodland was significantly higher than that in Medicago sativa L. field(p<0.05), and the average soil water storage in artificial Caragana korshinskii Kom. woodland was higher than that in Medicago sativa L. field from May 7 to June 7 and from June 26 to July 9.(5)The deepest response depths of soil moisture content to rainfall in 0—200 cm soil layer for artificial Caragana korshinskii Kom. forest and Medicago sativa L. field were 40 cm and 30 cm, respectively. Soil water content in 0—30 cm soil layer of artificial Caragana korshinskii Kom. forest responded more rapidly to rainfall than Medicago sativa L. field. [Conclusion]Compared with artificial Caragana korshinskii Kom. forest, the average soil moisture content in 0—200 cm soil layer in Medicago sativa L. field was lower, and the soil moisture content of 40—200 cm soil layer was limited by precipitation recharge, which was easy to cause water deficit.

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备注/Memo

收稿日期:2024-01-22 修回日期:2024-05-06 接受日期:2024-05-21
资助项目:国家自然科学基金(32260422,32060301); 宁夏自然科学基金优秀青年项目(2022AAC05019)
第一作者:任鸿武(1991—)男,陕西西安人,硕士研究生在读,研究方向为水土保持与荒漠化防治。E-mail:1411998058@qq.com
通信作者:吕雯(1979—)女,宁夏银川人,博士,副研究员,主要从事水土保持、水资源高效利用研究。E-mail:lvwen@nxu.edu.cn

更新日期/Last Update: 2025-01-20