土壤微型食物网对沿着亚热带森林恢复沿着营养限制的反应
Dandan Gao1, Shuguang Liu1, Fei Gao1
1College of Life Science and Technology, National Engineering Laboratory for Applied Technology in Forestry & Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China; Lutou National Station for Scientific Observation and Research of Forest Ecosystems in Hunan Province, China; Technology Innovation Center for Ecological Protection and Restoration in Dongting Lake Basin, MNR, China.
The Science of the total environment
|November 14, 2023
概括
森林恢复增强了土壤的碳和,增加了土壤微型食物网的复杂性. 然而,营养素的限制,特别是,加剧,影响恢复期间的食物网稳定性.
科学领域:
- 土壤生态学 土壤生态学
- 森林恢复科学 森林恢复科学
- 生物地质化学生物地质化学
背景情况:
- 森林生态系统的功能依赖于土壤生物的相互作用和资源使用,受到生态固态度的影响.
- 土壤微生物是生物地球化学循环的关键,但它们对森林恢复过程中对石化失衡的反应知之甚少.
研究的目的:
- 调查森林恢复对土壤属性的影响以及土壤微型食物网的结构和功能.
- 了解在森林恢复过程中,生态固体几何学和资源可用性如何调节土壤食物网.
主要方法:
- 研究了南中国的森林恢复时间序列:早期 (中国单一栽培),中期 (混合针叶-宽叶) 和晚期 (混合宽叶) 阶段.
- 分析了土壤的物理化学特性,土壤微食物网的丰富性 (细菌,真菌,原生体,线虫),共发生网络和外酶活性.
主要成果:
- 森林恢复显著增加了土壤有机碳和总.
- 土壤微型食物网的丰富性和网络复杂性/稳定性随着恢复而增加.
- 和的限制,特别是,在恢复时间序列中增加,转移微生物酶活性.
结论:
- 营养素的限制,特别是,在森林恢复期间在调节土壤微型食物网的稳定性方面发挥着至关重要的作用.
- 土壤资源的可用性影响土壤食物网的动态,这对恢复森林中的碳捕获有影响.
相关概念视频
02:11The Roles of Bacteria and Fungi in Plant Nutrition
35.7K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
35.7K
02:23The Soil Ecosystem
20.1K
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:
20.1K
02:35Key Elements for Plant Nutrition
18.8K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.8K
02:41Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
02:17Ecological Succession
17.3K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
17.3K
02:40Epiphytes, Parasites, and Carnivores
13.0K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
13.0K