土壤退化和除草剂污染由于泰国保护区内重复种植麻豆单种植
Ananya Popradit1, Yutthana Nakhokwik1, Marcel Robischon2
1Doctor of Philosophy Program in Environmental Studies, Valaya Alongkorn Rajabhat University Under Royal Patronage, Pathum Thani, Thailand.
PloS one
|August 6, 2024
概括
在泰国,大麻单一栽培降低了土壤的性能,减少了有机碳,增加了散装密度. 长期农业也改变了含量和pH值,以及土壤和水中的草甘污染.
科学领域:
- 土壤科学 土壤科学
- 环境科学 环境科学
- 农业科学 农业科学
背景情况:
- 泰国东北部的小规模农民将自然森林转化为麻农田.
- 麻瓜单种植被假定会随着时间的推移降低土壤特性.
- 了解土壤变化对于可持续农业和生态系统健康至关重要.
研究的目的:
- 调查长期麻单种植对土壤物理和化学性质的影响.
- 为了比较麻农田的土壤特性与相邻的自然森林.
- 评估潜在的土壤退化和除草剂污染风险.
主要方法:
- 进行了一项为期五年的 (2016-2020年) 关于麻豆农田和控制自然森林中的土壤特性研究.
- 分析物理特性 (散密度,土壤质地) 和化学特性 (有机碳,,pH,,,酸盐,电导率,阴离子交换能力).
- 在土壤和溪水中检测到除草剂 (草甘) 的存在.
主要成果:
- 在农田转型后不久,土壤有机碳显著减少,散装密度增加.
- 由于农业实践,研究期间晚些时候发现了土壤的显著增加和pH值的下降.
- 在农田土壤和相邻的溪水中检测到草甘,表明除草剂污染.
结论:
- 长期麻单种植大大降低了土壤的特性,包括有机物和结构.
- 农业活动和潜在的除草剂使用对土壤健康和水质构成风险.
- 土壤退化和除草剂污染可能导致不可逆转的陆地生态系统变化,需要政策干预.
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