在中国东北部典型的黑土重点区域深度酸盐积累
Shunhua Yang1, Yue Dong2, Mingyu Song3
1State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China.
The Science of the total environment
|September 6, 2024
概括
在黑色土壤中发现了深度酸盐积累,特别是在中国的林甸. 这种深层土壤需要考虑可持续的土地管理和地下水保护.
科学领域:
- 土壤科学 土壤科学
- 环境科学 环境科学
- 农业学是一种农业学.
背景情况:
- 在许多土壤中,深度酸盐积累在1米以下是已知的,但在黑色土壤中没有记录 (Phaeozems,Cernozems).
- 大规模积累受气候和土壤因素的影响,但研究往往集中在单个地点.
研究的目的:
- 调查中国黑土地区深层土壤酸盐的分布和控制因素.
- 为了分析无机的形式和10米深的 regolith特性.
主要方法:
- 在九个钻井中对无机和 regolith 属性的分析. 穿过 Fujin, Hailun 和 Lindian.
- 在潮湿,半潮湿和半干旱地区,采样深度扩大到10米.
主要成果:
- 在Lindian发生了显著的酸盐积累,度在3米深处达到峰值.
- 在Lindian (0-10m) 中的酸盐储存量很大,超过70%在1米以下,占总N库存的97.74%.
- 在海,氨的积累更深;在海和富津没有发现酸盐的积累. 规石的特性 (粘土,泥,沙子,pH) 影响了酸盐的模式.
结论:
- 深层酸盐池存在于密集管理的黑土壤中,影响了可持续的资源使用.
- 了解这些深层储存对于减轻地下水污染风险至关重要.
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