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牧场通过改变植物功能组来调节土壤的保持水的功能,在南方的良山脉

Longxin Guo¹, Mingyang Zhang², Yongsheng Yang²

¹Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China; College of Horticulture and Landscape Architecture, Yangtze University, Jingzhou 434025, China.

The Science of the total environment

|February 6, 2025

概括

在高山草原上大量放牧可以通过改变植被和土壤属性来提高土壤的水容量. 这项研究强调了植物功能组和土壤多孔性的关键作用,以维持草地在放牧压力下保持草地水的保留.

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:

形脚 (ME) 对于高山草原的保留水量至关重要.
过度放牧对ME的水容量产生了负面影响.
将牧场强度与ME水功能联系在一起的机制尚未得到充分研究.

研究的目的:

为了研究不同放牧强度如何影响高山草地植被和土壤特性.
为了阐明放牧对土壤的影响,马蒂克脚的保持水的功能.
确定不同放牧制度下影响土壤含水量的关键因素.

主要方法:

在四种放牧强度下检查了植被和土壤的物理化学特性 (0-10厘米深度):轻度,中度,重度和重度.
评估了主导植被功能组的变化,ME厚度,土壤多孔度,散密度,土壤有机碳,和水容量和和液压导电性.
利用相关性分析来确定植物功能组,地下生物质,土壤总孔径和土壤含水量之间的关系.

主要成果:

植被从草地转移到草地,放牧强度增加;在重放牧的情况下,ME厚度达到峰值.
放牧改变了土壤的物理 (多孔度,散密度) 和化学 (有机碳) 属性.
沉重的牧场代表了一个门,最大限度地提高了土壤和的水容量和液压导电性.
植物功能组和土壤总孔径与地下生物质和土壤含水量显著相关.

结论:

放牧强度显著影响高山草地植被组成和土壤物理化学性质.
重度放牧可以提高土壤的水容量和液压导电性,通过植被和土壤结构变化进行调解.
土壤总多孔性是直接和主要影响高山草原土壤含水量的关键因素.
这些发现为开发科学放牧管理策略提供了基础,以优化高山草水功能.

关键词:

阿尔卑斯山的草地.放牧强度放牧强度放牧强度马蒂克的 epipedon 在线播放植物的功能组是植物的功能组.保护土壤水资源保护土壤水

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