Vegetation dynamics and its impact on runoff in the Hekouzhen-Longmen region of the middle reaches in the Yellow River from 1980-2016
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The Hekouzhen-Longmen region of the middle reaches in the Yellow River is a key and typical area for the implementation of the Grain for Green Project (GGP) in China. It is of great significance for the sustainable utilization of water resources and the eco-hydrological effect assessment of the GGP project to quantitatively evaluate the vegetation dynamics and its impact on runoff in the basin. Based on remote sensing, GIS technology, mathematical statistics, and Budyko framework, the spatial-temporal change pattern of vegetation cover and its impact on runoff change is quantitatively evaluated using different vegetation type data of seven periods in the Hekouzhen-Longmen region for past 37 years. The results indicate that; 1) the change in vegetation do not significantly change the temporal and spatial distribution pattern of each vegetation type in the Hekouzhen-Longmen region;2) the implementation of the GGP change the equilibrium status and transformation rate of each vegetation type;3) vegetation changes are the main driving factor of runoff decline after the implementation of GGP in the last 10 years ( 2000-20l0), but the subsequent continuous increase in precipitation make the ”water reduction effect” of vegetation tend to ease.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号