Water conservation pattern of Fangcheng River Basin in Beibu Gulf and its response to precipitation
View abstract on PubMed
Summary
This summary is machine-generated.Water conservation in the Fangcheng River Basin accounts for 50.7% of annual precipitation. Forested, steep areas show higher water conservation, while human activity impacts lower it, with short-duration rain being most beneficial.
Area Of Science
- Hydrology
- Environmental Science
- Ecosystem Management
Background
- Understanding watershed water conservation is crucial, especially under monsoon climates.
- Spatiotemporal patterns of water conservation evolve with precipitation and temporal scales.
- The South Asian monsoon significantly influences regional water resources.
Purpose Of The Study
- To investigate the spatiotemporal patterns of watershed water conservation.
- To analyze the response of water conservation to precipitation in the Fangcheng River Basin.
- To understand how different precipitation event durations affect water conservation.
Main Methods
- Utilized the Soil and Water Assessment Tool (SWAT) model.
- Applied principles of water balance for calculations.
- Analyzed data at monthly and sub-basin scales.
Main Results
- Water conservation in the Fangcheng River Basin was 1637.4 mm·a<sup>-1</sup> (50.7% of mean annual precipitation).
- Sub-basins with high forest cover and steep slopes showed greater water conservation.
- Short-duration precipitation events (≤2 days) enhanced ecosystem water conservation more effectively than long-duration events.
Conclusions
- Watershed water conservation is significantly influenced by land cover, topography, and human activities.
- Precipitation characteristics, particularly duration, play a key role in modulating water conservation.
- Management strategies should consider precipitation patterns for effective water resource management.
Related Concept Videos
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...
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.
Under normal conditions, water taken up by the plant evaporates from leaves and other parts in a process called transpiration. In times of drought stress, water that evaporates by transpiration far exceeds the water absorbed from the soil, causing plants to wilt. The general plant response to drought stress is the synthesis of hormone...
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
Gradually varying flow (GVF) in open channels describes situations where water depth changes slowly along the channel due to factors like non-uniform bed slope, channel shape variations, or obstructions. This flow type occurs when the depth adjusts gradually to balance gravitational forces, shear forces, and energy requirements, resulting in a low rate of depth change.Characteristics of Gradually Varying FlowGVF is commonly observed in natural streams, rivers, and canals, where flow depth...
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.
In land plants, the uppermost cell layer of a plant leaf, called the epidermis, is coated with a waxy substance called the cuticle. This hydrophobic layer is composed of the polymer cutin and...
Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...

