Method and system for quantitatively estimating carbon reserves of native coastal wetland ecosystem

Abstract

The invention relates to a method and a system for quantitatively estimating carbon reserves of a native coastal wetland ecosystem. The method comprises the following steps: completing native coastalwetland mapping by adopting multi-source and multi-temporal remote sensing data; obtaining native coastal wetland soil and vegetation samples by adopting a traditional sample plot and quadrat investigation method, and realizing soil carbon reserve space inversion by adopting a geographically weighted regression method; adopting a remote sensing technology to realize biomass inversion of the nativecoastal wetland, and combining a biomass carbon coefficient to realize vegetation carbon reserve estimation of the native coastal wetland; and finally, estimating the carbon reserves of the native coastal wetland by combining the soil carbon reserves and the vegetation carbon reserves. The system and the method break through the limitation that the previous research on the native coastal wetlandis only limited to the estimation of experimental points, greatly improve the estimation precision of the carbon reserves, realize the intuitive and reliable analysis of the spatial heterogeneity andreserves of the carbon reserves, and can provide a scientific basis for the carbon cycle research of an ecological system.

Description

technical field [0001] The invention relates to the field of ecosystems, in particular to a method and system for quantitatively estimating carbon storage in primary coastal wetland ecosystems. Background technique [0002] The wetland ecosystem is a terrestrial ecosystem with the strongest service function, the highest service value, the richest biodiversity, the most significant protection significance, the greatest carbon sequestration potential, and the strongest ecosystem purification ability. It has won the reputation of "the kidney of the earth". The protective role of wetlands on fish and wildlife has been widely recognized, and its other functions have gradually been discovered: conserving groundwater, preventing floods and droughts, degrading pollution, maintaining biodiversity, regulating river surfaces, underground runoff and Local climate, replenishing groundwater, purifying the environment and depositing nutrients, preventing soil erosion, reducing backflow of ...

AI Technical Summary

Problems solved by technology

However, there are relatively few studies on large-scale carbon storage, and the accuracy of mapping coastal wetlands and their carbon-related spatial distribution is poor. With limited time, manpower, and financial resources, field surveys and mapping of large-scale and complex coastal wetland ecosystems are required. , is almost impossible to complete, and coastal wetlands are mostly distributed in areas with harsh environments such as paleo-channels, floodplains, gully head depressions, valleys, oxbow lakes, and river terraces. The estimates of the research results have large errors

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