阻沙固沙带不同治沙措施对土壤理化性质和酶活性的影响
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田永胜(1998—),男,在读硕士研究生,主要从事荒漠化防治研究。E-mail:18894325817@163.com

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S156.5

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国家自然科学基金区域创新发展联合基金项目(U21A2001);甘肃农业大学青年导师基金项目(GAU-QDFC-2020-09)


The Effects of Different Desertification Control Measures on Soil Physicochemical Properties and Enzyme Activities in Sand Blocking and Fixation Zone
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    摘要:

    [目的] 为探究阻沙固沙带不同治沙措施对土壤理化性质和酶活性的影响及其相关关系,为措施选择及效益评价提供技术支撑。[方法] 以流动沙丘+梭梭(CK)为对照组,以生态垫沙障+梭梭(ES)、尼龙网格沙障+梭梭(NS)、编织袋沙障+梭梭(WS)、草方格沙障+梭梭(GS)、黏土沙障+梭梭(CS)为试验组,对6种不同治沙措施0~60 cm土层土壤的理化性质和酶活性进行分析。[结果] 相较于CK治沙措施,其他5种治沙措施土壤理化性质和酶活性均存在显著变化。1)在0~60 cm土层土壤的pH变化不显著,土壤水分体积分数(SWC)随土层的增加而增加,土壤有机碳(SOC)、全氮(TN)、全磷(TP)及全钾(TK)质量分数随土层的增加而降低,与CK治沙措施相比,其他5种治沙措施影响下土壤养分明显增加,其中NS治沙措施增加最显著。2)不同治沙措施下,NS措施的土壤酶活性最高,GS次之,CS最小,0~60 cm土层土壤酶活性总体呈降低趋势。3)土壤理化性质与土壤酶活性存在显著相关关系,不同治沙措施下土壤理化性质对土壤酶活性的贡献不同,土壤酶活性主要受TK、SOC及SWC的影响。[结论] 5种不同治沙措施对土壤理化性质和酶活性均起到不同程度的促进作用,其中,NS治沙措施产生的生态效益最佳,且具有长期稳定性。

    Abstract:

    [Objective] To explore the effects of different sand control measures on soil physicochemical properties and enzyme activity in sand blocking and stabilization zones,and their relationships,in order to provide technical support for measure selection and benefit evaluation. [Methods] Using mobile sand dunes and Haloxylon ammodendron (CK)as the control group,and ecological cushion sand barrier+Haloxylon ammodendron(ES),nylon mesh sand barrier+H. ammodendron(NS),woven bag sand barrier+H. ammodendron(WS),grass square grid sand barrier+H. ammodendron(GS),and clay sand barrier+H. ammodendron(CS)as the test groups,physical and chemical properties and enzyme activities of soil within 0~60 cm depth for six different sand control measures were analyzed. [Results] Compared with CK,there were significant changes in soil physicochemical properties and enzyme activities among the other five different sand control measures. 1)Within the depth range of 0~60 cm,there was no significant change in soil pH,but soil moisture content(SWC)increased with increasing soil depth. The mass fractions of soil organic carbon(SOC),total nitrogen(TN),total phosphorus(TP),and total potassium (TK)decreased with increasing soil depth. Compared with CK,the other five different sand control measures had a significant increase in soil nutrient content,with NS showing the most significant increase. 2)Under different desertification control measures,soil enzyme activities of NS measure were the highest,followed by that of GS,and that of CS were the lowest. Within the depth range of 0~60 cm,soil enzyme activities showed a decreasing trend. 3)There were significant correlations between soil physicochemical properties and soil enzyme activities. The contribution of soil physicochemical properties to soil enzyme activities varied under different desertification control measures,and soil enzyme activities were mainly influenced by TK,SOC,and SWC. [Conclusion] Five different sand control measures have varying degrees of promoting effects on soil physicochemical properties and enzyme activities,among which NS sand control measures have the best ecological benefits and long-term stability.

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田永胜, 马瑞, 刘腾, 马彦军.阻沙固沙带不同治沙措施对土壤理化性质和酶活性的影响[J].水土保持学报,2025,39(2):57~64

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  • 收稿日期:2024-09-09
  • 最后修改日期:2024-10-26
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  • 在线发布日期: 2025-05-07
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