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在阿尔卑斯山草原上,在不同的放牧制度下,土壤可用的驱动着地面和地下生物质权衡

Jing Li¹, Wen Li², Wenhui Liu²

¹College of Forestry and Grassland, Qinghai University, Xining, 810016, China; Key Laboratory of Development of Forage Germplasm in the Qinghai-Tibetan Plateau of Qinghai Province, Academy of Animal Science and Veterinary, Qinghai University, Xining, 810016, China; State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China.

Journal of environmental management

|February 18, 2026

概括

不同的放牧方法影响了阿尔卑斯山草中的植物生物质分配. 土壤和酶活性是这些生物质权衡的关键驱动因素,为可持续的牧场管理提供信息.

科学领域:

生态科学生态科学
植物生理学植物生理学
土壤科学土壤科学

背景情况:

生物质分配对于植物适应和生态系统功能至关重要.
牧场是阿尔卑斯山草原的重大干扰,影响植物生物质.
了解放牧模式如何影响生物质权衡对生态系统管理至关重要.

研究的目的:

调查五种不同放牧方法对青海-西藏高原高山草原植物生物质分配和权衡的影响.
确定影响各种放牧模式下的生物质权衡的关键土壤因素和途径.
为优化牧场管理为草原健康提供科学基础.

主要方法:

在五种放牧方法中测量了土壤酶活性,植物生物量和土壤物理化学特性:持续放牧 (CG),生长季度放牧 (GG),休眠季度放牧 (GD),传统放牧 (TG) 和放牧排除 (GE).
应用生物质权衡模型来分析植物生物质分配策略.
利用结构方程建模 (SEM) 来识别直接和间接影响生物质权衡的因素.

主要成果:

在不同的放牧模式下,植物生物质分布与最佳分区理论保持一致.
在生长季节的放牧有利于发芽生物质分配 (权衡值为0.016),而其他方法 (TG,CG,GE,GD) 则有利于根生物质分配.
生物质权衡直接受到土壤可用的和土壤细胞酶活性的影响,间接受到土壤性酸酶,可用的和有机物质的影响.

结论:

土壤可用的是推动植物社区生物质权衡的关键因素 (-0.863总效应).
牧场管理通过土壤特性和酶活动显著改变了生物质分配策略.
研究结果支持优化放牧策略,以提高草原的健康和生产力.

关键词:

阿尔卑斯山草原的草地关键因素关键因素生物质的权衡是生物质的权衡.放牧制度放牧制度放牧制度

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