[1]麻进,胡广录*,陈海志,等. 荒漠—绿洲过渡带典型混交灌木根区土壤含水率变化特征[J].西北林学院学报,2023,38(1):34-41.[doi:10.3969/j.issn.1001-7461.2023.01.05]
　MA Jin,HU Guang-lu*,CHEN Hai-zhi,et al. Variation Characteristics of Soil Moisture Content in the Root-Zone Soil of Typical Mixed Shrubs in the Desert-Oasis Transition Zone[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(1):34-41.[doi:10.3969/j.issn.1001-7461.2023.01.05]
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 荒漠—绿洲过渡带典型混交灌木根区土壤含水率变化特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第1期
页码:
34-41
栏目:
出版日期:
2023-01-31

文章信息/Info

Title:
 Variation Characteristics of Soil Moisture Content in the Root-Zone Soil of Typical Mixed Shrubs in the Desert-Oasis Transition Zone
文章编号:
1001-7461(2023)01-0034-08
作者:
 麻进; 胡广录*; 陈海志; 焦娇
 （兰州交通大学 环境与市政工程学院，甘肃 兰州 730070）
Author(s):
 MA Jin; HU Guang-lu*; CHEN Hai-zhi; JIAO Jiao
 (School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China)
关键词:
 ; 荒漠—绿洲过渡带; 土壤含水率; 混交灌木; 土壤持水能力
Keywords:
 ; desert-oasis transition zone;  soil moisture content;  mixed shrub;  soil water holding capacity
分类号:
S718.43
DOI:
10.3969/j.issn.1001-7461.2023.01.05
文献标志码:
A
摘要:
 土壤水分是干旱区植被生长的限制因子，研究荒漠—绿洲过渡带植被根区土壤水分时空变化对抵御沙漠化进程具有重要意义。以荒漠-绿洲过渡带3种典型混交灌木梭梭×泡泡刺（SS×PP）、泡泡刺×沙拐枣（PP×SG）、沙拐枣×梭梭（SG×SS）为研究对象，对3种典型混交灌木根区0~100 cm土层土壤进行连续采样并测定土壤含水率。结果表明：1）7-9月，3种混交灌木根区0~100 cm土层土壤含水率的变化范围依次为：梭梭×泡泡刺0.54%~2.75%、1.06%~2.41%、0.73%~4.72%；沙拐枣×梭梭0.42%~2.59%、0.96%~2.35%、0.57%~3.58%；泡泡刺×沙拐枣0.31%~2.38%、0.56%~2.33%、0.79%~3.71%。3种混交灌木在0~60 cm土层土壤含水率随深度增加而增大，60~100 cm土层各类型混交灌木土壤含水率变化逐渐趋于稳定。2）7月，0~100 cm土层混交灌木梭梭×泡泡刺的土壤含水率显著高于沙拐枣×泡泡刺，9月，20~40、60~100 cm土层混交灌木沙拐枣×梭梭的土壤含水率显著低于其他2种混交灌木类型。3）3种混交灌木土壤持水能力大小为梭梭×泡泡刺>泡泡刺×沙拐枣>沙拐枣×梭梭。研究结果为荒漠—绿洲过渡带防风固沙植被建设中植物种类的选择提供科学依据。
Abstract:
 Soil moisture is the limiting factor for vegetation growth in arid regions.It is of great significance to study the temporal and spatial changes of soil moisture in the root zone of vegetation in the desert-oasis transition zone to resist the process of desertification.In this paper,three typical mixed shrubs occurring in the desert-oasis transition zone were studied:Haloxylon ammodendron×Nitraria sphaerocarpa(SS×PP),Nitraria sphaerocarpa×Calligonum mongolicum(PP×SG) and Calligonum mongolicum×Haloxylon ammodendron(SG×SS).Soils in the 0-100 cm soil layer in the root zone of three typical mixed shrubs were continuously sampled and the soil moisture contents were measured.The results showed that 1) from July to September,the ranges of soil moisture content in the 0-100 cm soil layer in the root zone of the three mixed shrubs were as follows:SS×PP:0.54%-2.75% (July),1.06%-2.41% (August),0.73%-4.72% (September); SG×SS:0.42%-2.59%,0.96%-2.35%,0.57%-3.58%; SG×PP:0.31%-2.38%,0.56%-2.33%,0.79%-3.71%.From July to September,the soil moisture contents of the three types of fixing land plants in the 0-60 cm soil layer increased with soil depth,while the contents were gradually stable in the soil layer of 60-100 cm in three mixed shrubs.2) In July,the soil moisture content in the soil layer of 0-100 cm with SS×PP was significantly higher than that of SG×PP.In September,the soil moisture contents of SG×SS in the soil layers of 20-40 cm and 60-100 cm were significantly lower than those of other mixed types.3) The soil water-holding capacity of the three types of fixing land plants ranked as SS×PP>SG×PP>SG×SS.The results of this study can provide a scientific basis for the construction of windbreak and sand fixation vegetation in the desert-oasis transition zone.

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备注/Memo

备注/Memo:
 收稿日期：2022-05-06修回日期：2022-06-16
基金项目：国家自然科学基金（41561102，41867074）。
第一作者：麻进。研究方向：干旱区环境生态修复。E-mail:845041926@qq.com
*通信作者：胡广录，博士，教授。研究方向：生态水文及生态修复。E-mail:hgl0814@163.com
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