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气候和生物类型共同调节干旱地区的土壤多功能性和质量:古尔本敦古特沙漠的证据

Yonggang Li¹, Yingjie Gao¹, Yunjie Huang²

¹School of Plant Protection and Environment, Henan Institute of Science and Technology, Xinxiang, China.

Frontiers in plant science

|February 26, 2026

概括

生物土壤地 (Biocrusts) 显著影响土壤多功能性 (SMF) 和土壤质量指数 (SQI). 163毫米的降水值和生物类型是干旱地区气候变化下的SMF的关键驱动因素.

科学领域:

生态生态学生态生态学
土壤科学土壤科学
环境科学环境科学

背景情况:

土壤多功能性 (SMF) 和土壤质量指数 (SQI) 对土壤健康和生产力至关重要.
生物土壤地 (Biocrusts) 影响土壤属性,但它们在气候变化下的生态系统功能中的作用还未得到充分研究.
土壤多功能性 (SVM) 的空间变性表明土壤异质性.

研究的目的:

评估Gurbantunggut沙漠中的SMF,SQI和SVM的驱动程序.
确定气候,土壤环境和生物对这些土壤指标的相对重要性.
了解生物如何调节生态系统功能以应对气候变化.

主要方法:

在古尔本敦古特沙漠的74个地点进行了实地调查.
对气候变量 (温度,降水),土壤特性和生物覆盖面的分析.
结构方程建模 (SEM) 用于评估变量之间的直接和间接关系.

主要成果:

生物覆盖面与SMF和SQI正相关.
增加年平均温度增强生物指数,SMF和SQI.
确定了163毫米的降水值,超出该值,SMF和SQI下降;随着降水量的增加,SVM下降.
SEM证实了生物对SMF和SQI的积极影响,以及SMF和SQI对SVM的显著影响.

结论:

生物类型和163毫米的降水值是SMF的关键调节者,受温度路径的影响.
在气候变化下的干旱地区,生物在维持土壤功能方面发挥着重要作用.
研究结果为干旱地区的管理提供了一个预测框架,并了解生态系统对气候变化的反应.

关键词:

生物树干生物树干沙漠的沙漠,沙漠的沙漠,沙漠的沙漠土壤多功能性的多功能性土壤质量指数土壤质量指数土壤多功能性的空间变化.

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