森林管理实践改变了上层土壤的碳池及其稳定性
Pan Wan1, Xiaolong Zhao1, Zeyu Ou1
1College of forestry, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
The Science of the total environment
|August 7, 2023
概括
森林管理对土壤碳有影响. 通过去除其他树木来种植树木 (CNFM) 减少了土壤有机碳,但通过改变土壤,酶和真菌来增加其稳定性.
科学领域:
- 林业科学 林业科学
- 土壤科学 土壤科学
- 生态生态学 生态生态学
背景情况:
- 森林管理实践显著影响土壤碳动态和稳定性.
- 了解这些影响对于可持续森林管理和气候变化缓解至关重要.
研究的目的:
- 研究不同森林管理策略对土壤有机碳 (SOC) 池及其稳定性的影响.
- 确定关键的土壤特性和介导这些变化的微生物因素.
主要方法:
- 四种管理策略的比较:种植目标树 (CNFM),优化空间结构 (SBFM),减少密度 (SFCS) 和非管理控制 (NT).
- 对土壤表面 (0-10厘米) 的SOC,不稳定有机碳,微生物群落和化学成分 (NMR) 的分析.
- 评估土壤总,酶活动 (β-葡萄糖酶,细胞氧化酶),细根碳和真菌操作分类单位.
主要成果:
- 与NT和SBFM相比,CNFM和SFCS战略显示溶解有机碳较低.
- 通过增加基C与o-基C的比率,CNFM战略提高了SOC的稳定性.
- 管理实践通过土壤,酶活性,细根碳和真菌多样性的变化改变了SOC和不稳定池.
结论:
- 在天然树林中通过清除干扰树 (CNFM) 来种植目标树可以减少土壤的整体有机碳,但可以提高其稳定性.
- 土壤,酶活动,细根和真菌群体是SOC池的关键调节者.
- 土壤的真菌成分在影响SOC稳定性方面发挥着重要作用.
更多相关视频
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
11.8K
09:04Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures
Published on: October 29, 2016
11.6K
相关概念视频
01:14The Carbon Cycle
38.5K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
38.5K
02:23The Soil Ecosystem
20.4K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
20.4K
02:26Ecological Disturbance
17.1K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
17.1K