Related Experiment Video
Updated: May 28, 2026

Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
[Spatio-temporal Evolution Characteristics and Driving Factors of Water Conservation Function in the Dry-Hot Valley
Yi-Ying Li1,2,3, Yi-Qi Ma1,2,3, Qing-Song Chen1,2,3
1Kunming General Survey of Natural Resources Center of China Geological Survey, Kunming 650100, China.
Abstract:
The Dry-Hot Valley of Jinsha River is a typical eco-fragile region with low vegetation coverage and serious soil and water loss. It is of great significance to carry out water conservation function assessment for regulating the water cycle and maintaining regional ecological security. Based on the InVEST model, this study estimated the water conservation in the Dry-Hot Valley Area of Jinsha River from 1990 to 2022 and analyzed its spatio-temporal characteristics and driving factors. The results were as follows: ① The distribution pattern of water conservation in the Dry-Hot Valley Area of Jinsha River was high in the northeast and low in the southwest, and the average annual water conservation was 171.97 mm. ② In the past 33 years, water conservation in the Dry-Hot Valley Area of Jinsha River decreased in the southwest and increased in the northeast (P < 0.05). ③ The overall importance of the water source culvert function in the Dry-Hot Valley Area of Jinsha River was "generally important," followed by "important" and "extremely important" in order. ④ Meteorology and land use were the main factors of water conservation change in the Dry-Hot Valley Area of Jinsha River, and precipitation was the driving factor with the greatest explanatory power for the spatial distribution of water conservation.
Related Concept Videos
Regulation of Water Output
Regulation of Water Intake
Design Example: Design of an Irrigation Channel
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
Design Example: Creating a Hydraulic Model of a Dam Spillway
Responses to Drought and Flooding
