有机农业实践中的土壤有机碳和储量的变化和废弃的茶叶种植园
Kai-Wei Juang1, Chiou-Pin Chen2
1Department of Agronomy, National Chiayi University, No. 300, Syuefu Rd., 600355, Chiayi City, Taiwan.
Botanical studies
|September 27, 2023
概括
恢复二级森林可以大大增加土壤有机碳 (SOC) 储量. 与传统茶叶种植园相比,有机农业没有显著增加SOC,尽管土壤分布有差异.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 生态生态学 生态生态学
背景情况:
- 传统的茶叶种植园和有机农业实践可以改变土壤的有机碳 (SOC) 和 (N) 储量.
- 与传统茶叶种植园相比,研究了恢复的二级森林和有机茶叶种植园中的土壤特性,SOC和N库存.
研究的目的:
- 为了比较土壤有机碳 (SOC) 和 (N) 储量及其垂直分布.
- 评估土地利用变化从传统茶叶种植园到二级森林和有机茶叶种植园对土壤属性的影响.
主要方法:
- 对土壤特性,SOC和N含量和库存进行比较分析.
- 在50厘米的土壤深度内评估SOC和N的垂直分布.
- 二级森林,有机茶叶种植园和传统茶叶种植园之间的比较.
主要成果:
- 二级森林的SOC储量 (115.53 ± 7.23 Mg C ha−1) 比传统茶叶种植园 (92.1 ± 8.54 Mg C ha−1) 高得多.
- 在二级森林和传统茶叶种植园之间,N储量没有显著差异.
- 传统和有机茶叶种植园的SOC库存相似 (92.1 ± 8.54对比97.47 ± 1.53Mg C ha-1),但SOC和N分布因深度而异.
结论:
- 在二级森林中产生的大量垃圾增加了SOC和N的积累.
- 大豆的修正和种植年龄分别影响了传统和有机茶叶种植园中的SOC和N分布.
- 回归二级森林有效地恢复了土壤碳;有机农业并没有比传统做法显著增加SOC库存.
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