相关实验视频

Updated: May 3, 2026

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 10, 2012

评估气候变化和人类对黄河流域下水和水文干旱的影响,使用机器学习增强的水文建模方法

Lei Wang¹, Yi Li¹, Asim Biswas²

¹College of Water Resources and Architecture Engineering, Key Lab of Agricultural Water and Soil Engineering of Education Ministry, Northwest A&F University, Yangling, 712100, China.

Journal of environmental management

|March 27, 2025

概括

人类活动显著减少黄河流域的下水比气候变化更大. 气候变化影响干旱的频率,而人类活动增加了干旱的严重程度和持续时间.

科学领域:

水文学的水文学
气候科学气候科学
环境管理环境管理

背景情况:

水资源管理需要了解气候变化 (CC) 和人类活动 (HA) 对水文事件的影响.
黄河流域 (YRB) 面临着巨大的水文挑战,因为这些压力组合.

研究的目的:

量化CC和HA对YRB的排水和水文干旱特征 (HDC) 的影响.
评估水文模型以进行准确的模拟和归因分析.

主要方法:

在16个站点 (1961-2016) 检测出流量中的趋势和变化点.
土壤和水资源评估工具 (SWAT),随机森林 (RF) 和偏差校正模型的评估,包括SWAT_RF_bias3.3.
应用"模拟观察"方法,将流水和HDC变化归因于CC和HA.

主要成果:

在YRB站的流量一般下降.
该SWAT_RF_bias3模型在每月的排水模拟中表现出卓越的性能.
人类活动占排水减少的68-95%,远远超过气候变化.
气候变化主要影响了严重/极端干旱的频率,而人类活动则导致极端干旱的规模和持续时间增加.

结论:

人类活动是YRB流量减少的主要驱动因素.
气候变化和人类活动都对水文干旱特征产生了明显而重大的影响.
偏差校正模型,如SWAT_RF_bias3,对于改善水文模拟和为YRB中的水资源管理提供信息至关重要.

关键词:

气候变化气候变化气候变化贡献分析贡献分析人类活动人类活动水文干旱水文干旱随机的森林随机的森林排水过程中的排水.特别突击队的特种部队.

更多相关视频

Watershed Planning within a Quantitative Scenario Analysis Framework

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM

Published on: October 11, 2016

相关概念视频

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

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.

Responses to Drought and Flooding

Responses to Drought and Flooding

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.

Applications of GIS: Disaster Management and Emergency Response

Applications of GIS: Disaster Management and Emergency Response

Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...