Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Threats to Biodiversity01:50

Threats to Biodiversity

22.9K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.9K
Gradually Varying Flow01:29

Gradually Varying Flow

118
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...
118
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

101
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...
101
Design Example: Design of an Irrigation Channel01:27

Design Example: Design of an Irrigation Channel

221
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...
221
Rapidly Varying Flow01:24

Rapidly Varying Flow

139
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
139
Responses to Drought and Flooding02:41

Responses to Drought and Flooding

11.0K
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.
11.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Declines in organic matter persistence with increased soil carbon.

Nature communications·2026
Same author

Measuring integrated hypertension care in community health centers: a cross-sectional study based on the Rainbow Model of Integrated Care in Chengdu, China.

BMC health services research·2026
Same author

Land vertebrates increasingly exposed to multiple extreme events by 2085.

Nature ecology & evolution·2026
Same author

Persistence and turnover of soil organic carbon in global drylands.

Nature communications·2026
Same author

The association of tobacco use on gastrointestinal cancers: A secondary dataset analysis of the Global Burden of Disease Study 2021 and Mendelian randomization.

Tobacco induced diseases·2026
Same author

Blind recognition of channel codes based on dual-branch feature fusion convolutional neural networks.

Scientific reports·2026

Related Experiment Video

Updated: Sep 12, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

8.1K

China's nationwide streamflow decline driven by landscape changes and human interventions.

Kaiwen Wang1, Xiaomang Liu1, Peng Cui2,3

  • 1Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.

Science Advances
|August 6, 2025
PubMed
Summary

China

More Related Videos

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events
06:26

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events

Published on: November 7, 2017

16.6K
Design and Construction of an Urban Runoff Research Facility
13:48

Design and Construction of an Urban Runoff Research Facility

Published on: August 8, 2014

13.2K

Related Experiment Videos

Last Updated: Sep 12, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

8.1K
Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events
06:26

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events

Published on: November 7, 2017

16.6K
Design and Construction of an Urban Runoff Research Facility
13:48

Design and Construction of an Urban Runoff Research Facility

Published on: August 8, 2014

13.2K

Area of Science:

  • Hydrology
  • Environmental Science
  • Climate Science

Background:

  • China's rivers are vital, supporting 20% of the global population and significant industrial and agricultural output.
  • Nationwide streamflow changes and their drivers are poorly understood due to data access and attribution challenges.
  • Understanding these changes is crucial for water resource management and ecological stability.

Purpose of the Study:

  • To conduct a comprehensive national assessment of streamflow changes in China over the past six decades.
  • To identify and attribute the primary drivers of observed streamflow trends, including climate, land use, and human interventions.
  • To provide actionable insights for water managers to address hydrological variability and mitigate risks.

Main Methods:

  • Utilized data from 1046 hydrological stations across China.
  • Integrated observational data with ISIMIP3a (Inter-Sectoral Impact Model Intercomparison Project, phase 3a) climate reconstructions.
  • Employed statistical analyses to disentangle the effects of climate, land use, and human water management on streamflow.

Main Results:

  • Streamflow has declined across over 70% of Chinese hydrological stations in the last six decades.
  • Declines are concentrated in northern China, primarily driven by land use/cover change, water abstraction, diversion, and regulation.
  • Increases in streamflow, mainly in southern China, are dominated by climate change and variability.

Conclusions:

  • Land use change and human water interventions are the primary drivers of streamflow decline in northern China.
  • Climate factors are the main drivers of streamflow increases in southern China.
  • Findings offer critical insights for developing targeted water management strategies and infrastructure projects to address hydrological changes.