Technology and device for predicting plant community cover in terrestrial ecosystem

Abstract

For the shortcomings of a short observation time, a high observation error, a large long-term continuous manual observation workload and low efficiency of the plant community cover in the terrestrialecosystem, the present invention provides a plant cover technology capable of growing a long-term time sequence and with two weeks as time precision. The technology can be used to quantitatively describe changes in the plant community cover under climate change and human disturbance conditions. The technology comprises: using a soil analyzer and plant monitoring equipment to obtain soil particle sizes and plant parameters, and obtaining soil hydrological parameters by combining soil databases; and using a dynamic vegetation model to simulate the plant community cover, obtaining the measured plant cover through digital camera imaging, verifying simulation results and correcting the soil hydrological and vegetation parameters in the database. The technology and device have the characteristics of a low cost, high prediction accuracy and a wide application range, and have important indication significance for the plant dynamic research and biodiversity conservation of the terrestrial ecosystem.

Description

technical field [0001] The invention belongs to the field of biological monitoring of terrestrial ecosystems, and relates to a method of obtaining soil hydrology and vegetation parameters by using a soil analyzer and a plant monitoring device, generating long-term plant coverage data by means of mathematical modeling and simulation, and using digital imaging to correct model parameters technology and devices. Background technique [0002] With the continuous development of social economy, environmental and ecological problems caused by climate change and human activities have become increasingly prominent. Climate change and human activities have significantly altered the composition and diversity of plant communities in terrestrial ecosystems. Plants, as primary producers, are key components in shaping terrestrial ecosystems, and are more sensitive to environmental changes than other ecosystem components. Compared with other plant physiological and ecological characterist...

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Problems solved by technology

Some scholars have proposed a method to quickly calculate grassland vegetation coverage from digital photos by using overgreen feature vegetation index and semi-automatic threshold setting algorithm. The calculation results are accurate and objective, and have strong applicability. Poor (Hu Jianbo et al., 2011)

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