[1]韩彦隆,魏亚娟,左小锋,等.吉兰泰荒漠绿洲过渡带土壤生态化学计量特征及养分恢复状况研究[J].水土保持研究,2025,32(02):207-214,223.[doi:10.13869/j.cnki.rswc.2025.02.010]
　Han Yanlong,Wei Yajuan,Zuo Xiaofeng,et al.Study on soil stoichiometry characteristics and nutrient restoration status in the Jilantai desert-oasis ecotone[J].Research of Soil and Water Conservation,2025,32(02):207-214,223.[doi:10.13869/j.cnki.rswc.2025.02.010]
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吉兰泰荒漠绿洲过渡带土壤生态化学计量特征及养分恢复状况研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 32 期数: 2025年02期 页码: 207-214,223 栏目: 出版日期: 2025-01-20
Title:
Study on soil stoichiometry characteristics and nutrient restoration status in the Jilantai desert-oasis ecotone
文章编号:
1005-3409(2025)02-0207-08
作者:
韩彦隆1, 魏亚娟1,2, 左小锋1,3, 左轶璆1, 康 帅2, 童国利4, 李建媛4, 王永平5
(1.内蒙古农业大学 沙漠治理学院, 呼和浩特 010018; 2.包头师范学院 生态环境学院, 内蒙古 包头 014030; 3.北京师范大学 地理科学学部 地表过程与资源生态国家重点实验室/防沙治沙教育部工程研究中心, 北京 100875; 4.内蒙古信中生态环境技术有限公司, 呼和浩特 010020; 5.西藏自治区拉萨市曲水县水利局, 拉萨 850600)
Author(s):
Han Yanlong1, Wei Yajuan1,2, Zuo Xiaofeng1,3, Zuo Yiqiu1, Kang Shuai2, Tong Guoli4, Li Jianyuan4, Wang Yongping5
(1.College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China; 2.College of Ecology and Environment,Baotou Teachers' College,Baotou,Inner Mongolia 014030,China; 3.State Key Laboratory of Earth Surface Processes and Resource Ecology,MOE Engineering Research Center of Desertification and Blown-Sand Control,Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China; 4.Inner Mongolia Xinzhong Ecological Environment...)
关键词:
土壤养分;  生态化学计量;  下垫面;  荒漠绿洲过渡带;  吉兰泰
Keywords:
soil nutrients;  ecological stoichiometry;  underlying surface;  desert-oasis ecotone;  Jilantai
分类号:
S151.9+3
DOI:
10.13869/j.cnki.rswc.2025.02.010
文献标志码:
A
摘要:
[目的]探究不同下垫面土壤养分及其生态化学计量的变化特征,阐明植被演替与土壤性状之间的耦合关系,进而为该区域的植被恢复提供理论依据。[方法]基于野外取样与室内实验相结合的方法,以吉兰泰荒漠绿洲过渡带4种下垫面(流动沙地、半固定沙地、固定沙地和防护林地)为研究对象,分析了0—30 cm浅层土壤容重(BD)、土壤含水量(SM)、有机碳(SOC)、全氮(TN)、全磷(TP)含量及其生态化学计量特征,从而揭示不同下垫面土壤养分含量和生态化学计量比分布特征以及与土壤环境因子之间的关系。[结果](1)吉兰泰荒漠绿洲过渡带不同下垫面土壤指标均符合正态分布(p>0.05)。从变异系数来看,BD和土壤孔隙度(STP)属于弱变异性,其余指标属于强变异性。(2)除TP和BD外,其他指标大小均表现为:防护林地>固定沙地>流动沙地>半固定沙地,说明绿洲化过程有利于土壤养分蓄积;(3)各下垫面土壤C:N,C:P和N:P随土层深度变化各异。不同下垫面C:N,C:P和N:P分别介于2.94～70.00,6.89～240.95,0.64～23.22。(4)不同下垫面土壤养分恢复指数表现为:防护林地>固定沙地>半固定沙地。[结论]人工植被建植更有利于土壤养分蓄积,研究结果为荒漠绿洲过渡带植被恢复和保护提供基础资料。
Abstract:
[Objective]The aims of this study are to investigate the characteristics of soil nutrients and their ecological stoichiometry on different underlying surfaces, to clarify the coupling relationship between vegetation succession and soil properties, and to provide a theoretical basis for vegetation restoration in the region. [Methods]Based on a combination of field sampling and indoor experiments, four types of underlying surfaces(shifting sandy land, semi-fixed sandy land, fixed sandy land and sheltered forest land)were selected in Jilantai desert-oasis ecotone. Soil bulk density(BD), soil moisture(SM), soil organic carbon(SOC), total nitrogen(TN), total phosphorus content(TP)and stoichiometry at a depth of 30 cm were measured to reveal the distribution characteristics of soil nutrient contents and stoichiometric ratios in different underlying surfaces, as well as the correlation with other environmental factors. [Results](1)The soil indexes of different underlying surfaces in Jilantai desert-oasis ecotone were in accordance with normal distribution(p>0.05). In terms of coefficients of variation, BD and soil total porosity(STP)were weakly variable, whereas the remaining indicators were strongly variable.(2)Except for TP and BD, other indicators decreased in the order:sheltered forest land>fixed sandy land>mobile sand dunes>semi fixed sandy land, indicating that the process of oasis transformation was beneficial for soil nutrient accumulation.(3)The ratios of C:N, C:P, and N:P of soils different underlying surfaces varied with the depth of soil layer. The ratios of C:N, C:P, and N:P in different underlying surfaces ranged from 2.94 to 70.00, 6.89 to 240.95, and 0.64 to 23.22, respectively.(4)The soil nutrient recovery index in different underlying surfaces decreased in the order:sheltered forest>fixed sandy land>semi fixed sandy land. [Conclusion]Artificial vegetation is more conducive to soil nutrient accumulation. These research results can provide basic information for vegetation restoration and conservation of desert-oasis ecotone.

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备注/Memo

收稿日期:2024-04-11 修回日期:2024-05-16 接受日期:2024-05-21
资助项目:自治区高等学校碳达峰碳中和研究专项(STZX202213); 高层次人才引进项目(BTTCRCQD2024-003); 国家自然科学基金(4196700)
第一作者:韩彦隆(1988—),男,内蒙古呼和浩特人,博士,讲师,主要从事荒漠化防治研究。E-mail:hanyl11@126.com
通信作者:魏亚娟(1994—),女,内蒙古赤峰人,博士,讲师,主要从事荒漠化防治研究。E-mail:weiyajuan0305@163.com

更新日期/Last Update: 2025-01-20