围封对宁夏荒漠草原典型植物群落土壤理化性质与酶活性的影响

doi:10.13287/j.1001-9332.202606.005

应用生态学报 ›› 2026, Vol. 37 ›› Issue (6): 1851-1860.doi: 10.13287/j.1001-9332.202606.005

围封对宁夏荒漠草原典型植物群落土壤理化性质与酶活性的影响

石娜^1,2, 刘建康^1,2*, 张洁^1,2, 吕鹏³, 张程辉³, 张博华³, 兰慧琴^1,2, 王益涛^1,2

¹宁夏大学生态环境学院, 银川 750021;
²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;
³宁夏大学林业与草业学院, 银川 750021

收稿日期:2026-01-29 修回日期:2026-04-28 出版日期:2026-06-18 发布日期:2026-12-18
通讯作者: *E-mail: liujiankang1989@126.com
作者简介:石娜, 女, 2002年生, 硕士研究生。主要从事修复生态学研究。E-mail: shinakk@163.com
基金资助:
国家自然科学基金项目(32360280,32001117)、宁夏全职引进高层次人才科研启动项目(2023BSB03022)、内蒙古自治区林业科学研究院开放课题(KF2024MS05)和第七批宁夏青年科技人才托举工程

Effects of enclosure on soil physicochemical properties and enzyme activities of typical plant communities in desert steppe of Ningxia

SHI Na^1,2, LIU Jiankang^1,2*, ZHANG Jie^1,2, LYU Peng³, ZHANG Chenghui³, ZHANG Bohua³, LAN Huiqin^1,2, WANG Yitao^1,2

¹School of Ecology and Environment, Ningxia University, Yinchuan 750021, China;
²Key Laboratory of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan 750021, China;
³School of Forestry and Grassland Science, Ningxia University, Yinchuan 750021, China

Received:2026-01-29 Revised:2026-04-28 Online:2026-06-18 Published:2026-12-18

摘要/Abstract

摘要： 本研究以宁夏盐池县荒漠草原苦豆子、猪毛蒿和油蒿3种典型植物群落为研究对象,对比分析了围封与传统放牧条件下植物群落结构、土壤理化性质及酶活性的差异。结果表明:围封显著提高了3种群落植物平均高度、盖度及地上生物量,但降低了群落密度及物种多样性。围封对3种群落土壤pH和全氮无显著影响,但导致苦豆子群落土壤有机碳与速效氮分别显著下降53.3%和42.0%,全磷、全钾和速效钾分别显著提高41.7%、9.7%和33.6%;围封使油蒿群落土壤全钾和速效钾分别显著提高15.9%和108.4%;而猪毛蒿群落土壤养分变化不显著。围封总体抑制了各群落土壤蔗糖酶、脲酶、碱性磷酸酶及过氧化氢酶的活性,其中苦豆子群落脲酶和碱性磷酸酶活性分别显著下降61.2%和68.3%,猪毛蒿群落土壤蔗糖酶、脲酶和碱性磷酸酶活性分别显著降低16.9%、43.2%和67.9%,油蒿群落以上4种酶活性显著下降11.9%～51.9%。相关分析与冗余分析表明,植物多样性与土壤理化性质共同解释了土壤酶活性85.6%的变异,其中土壤含水率、有机碳和物种丰富度贡献最为显著,而土壤理化性质的独立解释率(41.0%)明显高于植物多样性(8.4%)。草原围封对植物群落、土壤性状、关键酶活性的影响受群落类型调控,而植物群落主要通过调节土壤理化性质间接影响土壤酶活性。

关键词: 围封, 荒漠草原, 土壤理化性质, 土壤酶活性

Abstract: We compared the differences in plant community structure, soil physicochemical properties, and enzyme activity under enclosed and traditional grazing conditions across three typical plant communities in the desert steppe of Yanchi County, Ningxia-Astragalus adsutus, Artemisia scoparia, and Artemisia ordosica. The results showed that enclosure significantly increased average height, coverage, and aboveground biomass of three communities but reduced community density and species diversity. Enclosure did not affect soil pH and total nitrogen in all the three communities, but reduced soil organic carbon and available nitrogen by 53.3% and 42.0% in the A. adsutus community, while increased total phosphorus, total potassium, and available potassium concentration by 41.7%, 9.7%, and 33.6%, respectively. Enclosure significantly increased total potassium and available potassium concentration by 15.9% and 108.4% in the A. ordosica community, while did not affect soil nutrients in the A. scoparia community. Enclosure generally inhibited the activities of sucrase, urease, alkaline phosphatase, and catalase in the soil of all communities, with significant reductions in urease and alkaline phosphatase activity by 61.2% and 68.3% in the A. adsutus community, and significant declines in sucrase, urease, and alkaline phosphatase activity by 16.9%, 43.2%, and 67.9% in the A. scoparia community, as well as significant decreases in the activity of all four enzymes by 11.9% to 51.9% in the A. ordosica community. Correlation and redundancy analyses indicated that plant diversity and soil physicochemical properties together explained 85.6% of the variation in soil enzyme activity, with soil moisture, organic carbon, and species richness contributing the most. The independent explanatory rate of soil physicochemical properties (41.0%) was significantly higher than that of plant diversity (8.4%). The effects of grassland enclosure on plant communities, soil properties, and key enzyme activity were dependent on community type, while plant communities influenced soil enzyme activity indirectly by modulating soil physicochemical properties.

Key words: enclosure, desert steppe, soil physicochemical property, soil enzyme activity

石娜, 刘建康, 张洁, 吕鹏, 张程辉, 张博华, 兰慧琴, 王益涛. 围封对宁夏荒漠草原典型植物群落土壤理化性质与酶活性的影响[J]. 应用生态学报, 2026, 37(6): 1851-1860.

SHI Na, LIU Jiankang, ZHANG Jie, LYU Peng, ZHANG Chenghui, ZHANG Bohua, LAN Huiqin, WANG Yitao. Effects of enclosure on soil physicochemical properties and enzyme activities of typical plant communities in desert steppe of Ningxia[J]. Chinese Journal of Applied Ecology, 2026, 37(6): 1851-1860.

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围封对宁夏荒漠草原典型植物群落土壤理化性质与酶活性的影响

Effects of enclosure on soil physicochemical properties and enzyme activities of typical plant communities in desert steppe of Ningxia

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