A method to quantify the impact of climate change and human activities on watershed vegetation

By acquiring data from multiple data sources, performing spatiotemporal consistency processing and feature extraction, combining causal networks and regression decomposition methods, the problem of quantifying the impact of climate change and human activities on river basin vegetation in the prior art is solved, and more accurate and reliable ecosystem management and decision-making support is achieved.

CN119150001BActive Publication Date: 2025-03-28NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Application Number
CN202411662239.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2025-03-28
Estimated Expiration
2044-11-20

AI Technical Summary

Technical Problem

The prior art has problems in processing data spatiotemporal consistency in quantifying the impact of climate change and human activities on watershed vegetation, the difficulty of traditional linear models to capture nonlinear responses, the neglect of interactions, seasonal and interannual variation, inadequate processing of spatial heterogeneity and scale dependence, and oversimplification of uncertainty analysis.

Method used

A quantitative method of the impact of climate change and human activities on watershed vegetation is proposed, including obtaining data from multiple data sources, performing spatiotemporal consistency processing, calculating saturated water vapor pressure difference, extracting high-dimensional features, constructing spatiotemporal maps, applying map embedding technology to dimensionality reduction, establishing dynamic response models, using causal networks and regression decomposition methods to separate the impact, conducting comprehensive evaluation and uncertainty analysis.

Benefits of technology

It significantly improves its understanding of the dynamics of complex ecosystems, provides strong scientific support for river basin ecosystem management, can provide more accurate, reliable and comprehensive decision-making support, evaluate current ecological conditions and predict future changes, and provide scientific basis for formulating long-term ecological protection and restoration strategies.

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Abstract

The present invention discloses a method for quantifying the impact of climate change and human activities on watershed vegetation, including obtaining data of the study area from multiple data sources, performing spatiotemporal consistency processing, and calculating the saturated water vapor pressure difference; extracting features from the processed data and constructing a high-dimensional feature tensor; constructing a spatiotemporal graph based on the high-dimensional feature tensor, applying the graph embedding technology to reduce the dimension and dynamically model, and analyzing the spatiotemporal dynamic characteristics of watershed vegetation; using causal networks and regression decomposition methods to separate and quantify the direct impact of climate and human activities on vegetation; conducting a comprehensive assessment and uncertainty analysis. The present invention significantly improves the ability to understand the dynamics of complex ecosystems, provides strong scientific support for watershed ecosystem management, and can provide more accurate, reliable and comprehensive decision support.
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