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牧场改造后土壤种子库的弹性:对恢复废弃农田的影响

Reza Erfanzadeh¹, Tahereh Sabetpour¹, Tayebeh Amini²

¹Rangeland Management Department, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran.

The Science of the total environment

|August 9, 2025

概括

土地利用变化在半干旱生态系统中显著耗尽土壤种子库 (SSB). 密集的牧场比农业转型更严重地损害SSB,阻碍了生态恢复工作.

科学领域:

生态生态学生态生态学
恢复生态学恢复生态学
牧场管理牧场管理

背景情况:

土壤种子库 (SSB) 对生态系统恢复至关重要,特别是在半干旱地区.
了解SSB对土地使用变化的弹性对于有效的恢复至关重要.
中东的牧场面临着各种压力,包括放牧和农业转型.

研究的目的:

为了比较SSB的组成和密度在不同的土地使用类型和放牧强度.
评估农业转换与放牧对SSB的影响.
评估废弃土地的被动恢复潜力.

主要方法:

在植物功能组 (一年生,多年生,,草) 中比较SSB密度和组成.
从0-5厘米和5-10厘米的土壤深度分析样本.
评估土地用途:放牧牧场 (GR),未放牧牧场 (UR),小麦作物 (WL),豆类作物 (LL),园艺用地 (HL) 和废弃土地 (AL).

主要成果:

耕地表现出较低的SSB密度,而不是完好无草的牧场.
在UR和LL中发现的SSB总密度最高;在WL和HL中发现的最低,特别是在上层土壤层.
密集放牧对SSB的负面影响比转化为农业更严重;被遗弃的土地显示了严重枯竭的SSB.

结论:

牧场转化为农业削弱了SSBs.
密集放牧对SSB构成了比农业转型更大的威胁.
在废弃土地上枯竭的SSB表明受动回收有限,需要SSB评估进行恢复规划.

关键词:

农田是农作物种植的土地.土地使用情况土地使用情况中东中东地区的中东地区.牧场牧场牧场牧场半干旱地区半干旱地区

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