森林生态水文过程代表在调节流域气损失方面被忽视的作用
Xintong Cui1, Wei Ouyang1, Jiamei Wang2
1State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Advanced interdisciplinary Institute of Environment and Ecology, Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning, Beijing Normal University, Zhuhai, 519087, China.
Water research
|May 4, 2025
概括
森林生态水文学影响流域管理,但研究不足. 这项研究使用了经过修改的模型来分析损失,揭示了有机的主导地位和高酸盐在透土壤中的出. 这些发现有助于改善分散污染减缓策略.
科学领域:
- 生态水文学 生态水文学
- 环境科学 环境科学
- 水资源管理 水资源管理
背景情况:
- 森林生态水文功能对流域服务至关重要,但与农业或工业污染相比,研究关注度有限.
- 了解森林流域中 (N) 损失途径对于有效的水质管理至关重要.
研究的目的:
- 系统地分析森林流域中气损失的特征,途径和来源.
- 改进森林生态水文过程的模拟,使用修改后的土壤和水评估工具 (SWAT) 模型.
- 用标准模型来比较森林土地与其他土地用途的N损失,并识别标准模型的潜在高估.
主要方法:
- 现场采样和遥感数据集成.
- 开发和应用修改后的SWAT模型,增强森林生态水文表现 (改进叶面积指数和蒸发透气模拟).
- 在不同土地用途和全球数据中对损失 (有机N,酸盐浸) 的比较分析.
主要成果:
- 有机 (ORGN) 损失是森林中气损失的主要形式,对总负载做出了重大贡献.
- 在森林和农田地区都发生了高酸盐浸出,这是由于高石含量和土壤透性.
- 修改后的SWAT模型显示,原来的SWAT大大高估了森林土地的N损失,强调了准确的生态水文表现的重要性.
结论:
- 森林的生态水文功能显著影响损失的动态,特别是有机和酸盐在透土壤中的漏.
- 精确的生态水文建模对于避免误导性负载评估和制定有效的分散污染减缓策略至关重要.
- 综合流域管理必须考虑森林生态水文功能,以实现可持续的水质改善.
相关概念视频
The Nitrogen Cycle
51.1K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
51.1K
Conservation of Mass in Moving, Nondeforming Control Volume
653
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
653
Responses to Drought and Flooding
10.5K
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.
10.5K
Adaptations that Reduce Water Loss
25.0K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.0K
Overview of Nitrogen Metabolism
7.7K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.7K
The Water Cycle
23.9K
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
23.9K


