An accurate method for measuring the water-holding capacity of forest litter

Abstract

The present invention discloses an accurate measuring method for forest litter water holding capacity, the method comprises following steps: investigating litters of different representative forest land types in the field, according to a collection of litter samples, moisture content of the litters and a litter reserves measurement, and a litter water holding capacity measurement of a semi-decomposed layer or an undecomposed layer,taking and placing certain amount of air-dried litter samples in a nylon mesh and then placing in a plastic pot containing certain amount of water, according to different soaking time, taking out and hanging the litters till not dripping, then weighing the litters, in the same time, replacing the same soaking plastic pot each time, settling water that soaks the litters in each plastic pot, pouring out supernatant, and transferring sediments to a beaker or a small stainless steel pot, and drying to constant weight, weighing the sediments with an electronic scale with an accuracy of 0.01 g, and recording the amount of the sediments produced by each litter sample during different soaking periods. The method has strong operability, simple and convenient operation, quantitatively analyzes litter water holding capacity through indoor quantitative analysis operation, and provides data support for forest litter water source conservation function.

Description

technical field [0001] The invention belongs to the technical field of measuring the water-holding capacity of forest litter, and in particular relates to an accurate measurement method for the water-holding capacity of forest litter, and also relates to an extensible research design in the study of the water-holding capacity of the litter. Background technique [0002] Litter is an important part of terrestrial ecosystems. The accumulation and decomposition of litter is the central link in the biogeochemical cycle of elements in the ecosystem, and it plays a complex and important role in regulating the structure of plant communities and ecosystem processes. As an important covering on the soil surface of terrestrial ecosystems, litter plays important ecological functions of soil and water conservation and water conservation, such as intercepting surface runoff, depleting the kinetic energy of raindrops to prevent soil splash erosion, conserving soil moisture, and promoting f...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an accurate method for measuring the water-holding capacity of forest litter, which is easy to operate, accurate and reliable, and can simulate the water-holding capacity of litter in the natural state to the greatest extent , to provide technical support for the research on the ecological function of forest litter, and solve the problem that the existing litter water-holding capacity measurement method is inaccurate and not standardized enough

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