Method for promoting formation of uniform withered litter and humus layers in slope broad-leaved forest

Abstract

The invention provides a method for promoting formation of uniform withered litter and humus layers in a slope broad-leaved forest. The method comprises the following measures: I, performing thinningor trimming light permeation, and guiding growth of understory bushes and grasses; II, setting a biological baffle, and preventing fallen leaves from falling downwards along with a slopes; III, digging a storage ditch, accumulating withered litters, and accelerating decomposition, wherein the storage ditch is dug in one side where the biological baffle faces the slope. By adopting the method, artificial measures are introduced to improve lighting conditions, growth of the understory bushes is guided, retarding and absorption capabilities of an underlay surface are improved, the fallen leaves can be prevented from falling downwards along with the slope, and the ditch is dug to improve the storage and retention capability of the withered litters on the ground; in addition, under the action of undercutting of runoff on a ditch surface, ditch walls are collapsed, then the withered litters in the ditch can be naturally covered and compacted, the ditch walls are in contact and mixing with the withered litters, sufficient contact of soil microorganisms with the withered litters can be improved, formation of rotten and slope humus can be promoted, decomposition of the withered litters canbe accelerated, the speed and the capability that soil nutrition of the withered litters is returned are improved, and the method has great significances for fertility and sustainable utilization of forest soil.

Description

technical field [0001] The invention relates to the field of sustainable utilization of forest soil, in particular to a method for promoting the formation of uniform litter and humus layers in broad-leaved slope forests. Background technique [0002] As we all know, forest litter and humus play an important role in the material and energy cycle of forest ecosystems, and the return of litter is the main source of forest soil nutrients, an important way for forests to improve soil quality, and a key to sustainable use of forest soils. Material basis. Forest soil cannot be effectively supplemented by litter decomposition for a long time, which will inevitably lead to continuous degradation of forest land soil, which is extremely unfavorable to the current important task of national land afforestation - the improvement of forest quality. In addition, litter and humus layers also play an extremely important role in regulating forest hydrology and maintaining water and soil resou...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems of the prior art, the present invention provides a method for promoting the formation of uniform litter and humus layers ...

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