A rapid method for retrieving the primary productivity of wetland vegetation

Abstract

The invention discloses a method for rapidly inverting primary productivity of wetland vegetation. The method comprises the following steps: step I, synchronously observing vegetation indexes and vorticity data, confirming the function relationship of NDVI vegetation indexes, meteorological data and vorticity GPP, and building a primary productivity inversion model; step II, acquiring NDVI index spatial distribution data of an intertidal zone wetland, and rapidly inverting the primary productivity and the spatial distribution situation of a flying belt transect with the combination of the function relationship and the meteorological data.

Description

technical field [0001] The invention belongs to the field of ecology, and in particular relates to a method for quickly reversing the primary productivity of wetland vegetation. Background technique [0002] Wetland is an ecological buffer area between land and water, which has the functions of wind resistance, beach protection, water conservation, water purification, climate regulation, biodiversity maintenance, and CO2 fixation. 2 The functions and values ​​of ecosystem services such as ecosystems play an extremely critical role in the stability and health of ecosystems. In recent years, under the impetus of the state, local governments at all levels have paid more and more attention to wetland ecological protection and restoration, and have carried out demonstration projects in some places. As far as the management department is concerned, scientific assessment of the current wetland ecosystem service value is the prerequisite for wetland protection and restoration. The...

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Problems solved by technology

The plot inventory method is generally to harvest the measured plants regularly and dry and weigh them. This method is laborious and destructive; the eddy related technology mainly calculates the ecological environment by measuring the vertical wind speed and carbon water concentration gradient above the vegetation. Systemic uptake and fixation of CO 2 , but this technology only monitors the primary productivity within a specific "foot print", and is generally only applicable to areas with flat terrain and uniform vegetation on the underlying surface; the more widely used satellite remote sensing technology is based on the use of light energy Rate model, which analyzes regional vegetation coverage data through remote sensing data, and then estimates primary productivity. However, remote sensing data with low spatial and temporal resolution often reduces the accuracy of estimation.

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