Plant colony optimization method capable of improving Dianchi Lake basin forest land water source conservation capability

Abstract

The present invention discloses a plant colony optimization method capable of improving a Dianchi Lake basin forest land water source conservation capability. Indigenous tree species occupy a large part, arbors are not lower than 1.5m and shrubs are not lower than 0.2m. Under the condition of not damaging previous vegetations, the arbors are replanted in a distance 0.6m far away from the roots of the arbors, and the shrubs are replanted in a mutual distance of 0.2m to form a compound vegetation system matching the arbors and the shrubs. A land with the gradient smaller than 25 degrees is prepared in a hole-shaped manner; and a land with the gradient more than or equal to 25 degrees is prepared in a fish-scale pit manner and the depth is 0.3m. In rainy seasons, nursery-grown plants are put by adopting a seam planting method. After the plants are planted, surrounding shrubs are properly cultured in a light transmitting manner, and trimmed branches and leaves are dispersed and paved on a forest land, and the process is continued for 3 years and is carried out once every year. At the second year after replanting, the forest land with the conservation rate not reaching 85% is replanted. The plant colony optimization method disclosed by the invention has the beneficial effects that the interception of canopy classes can be improved, litter layers and soil layers keep moisture, the direct surface runoff is reduced, and the water source conservation capability is improved.

Description

technical field [0001] The invention belongs to the technical field of ecological restoration, and relates to a plant community optimization method for improving the water conservation capacity of forest land in the Dianchi Lake Basin. Background technique [0002] Water conservation capacity is one of the important components of forest ecosystem service functions, and plays an important role in protecting water sources and regulating runoff. The water conservation capacity of the forest is mainly manifested in the interception and retention of precipitation by the canopy layer, litter layer and soil layer. Optimizing stand structure is an important measure to restore healthy forest ecosystem and water conservation capacity. [0003] The problem of water environmental pollution in the Dianchi Lake Basin is very prominent. Among them, agricultural non-point source pollution is an important component of water environmental pollution, and it continues to maintain the driving f...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a plant community optimization method for improving the water conservation capacity of the forest land in the Dianchi Lake Basin, which solves the problem that the existing mountainous plant communities in the Dianchi Lake Basin have a relatively single structure and the functions of the plant community are low in water conservation and soil conservation.

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