3 results about "Natural regeneration" patented technology

The application relates to the technical field of ecological protection and restoration, and discloses a multi-star lily and competitive species interaction regulation and population natural renewal restoration method and system, which comprises the following steps: based on multi-period sample plot monitoring data, a multi-star lily-competitive species dynamic model containing non-integer time lag and nonlinear density index is established; nonlinear filtering is adopted to perform state online estimation on noise-containing monitoring data, and state estimation values and uncertainty measurements thereof are output; according to the state estimation values and the uncertainty measurements thereof, rolling optimization regulation and decision-making are performed through scene analysis and weight construction based on gradient difference; the natural renewal restoration potential is evaluated, and the grade of auxiliary measures is determined; and the restoration scheme is dynamically adjusted in a monitoring-estimation-decision-implementation-remonitoring closed loop. The application can be used for competitive regulation and ecological restoration of a multi-star lily degraded population in a karst mountain meadow, and the stability of the multi-star lily degraded population restoration is improved.

The invention discloses an artificial protection forest close-to-nature reconstruction method based on natural succession stage staging regulation and control, and the method comprises the steps: accurately judging the natural succession stage of a forest stand, and setting a threshold condition for transition to a next stage, so as to enable all reconstruction measures to be anchored to the development process of the forest stand; illumination and provenance are cooperatively regulated and controlled through forest window opening up and broad-leaved tree species complementary planting, and the under-forest natural updating potential is activated; through staged thinning, window expansion, width supplementation and needle control, the stand is guided to gradually turn from a single-layer same-age needle leaf structure to a different-age multi-layer, broad leaf dominated and plaque inlaid top-level community form; the litter reserves, the soil biological activity and the hydrological regulation capacity are synchronously improved, and a multi-layer protection system and a dynamic balance monitoring mechanism are constructed. The forest stand does not depend on continuous human intervention to maintain the function any more, but depends on succession power of the forest stand to achieve structural optimization and function jump, the succession stagnation problem is solved, and the artificial protection forest really has the stability, restoring force and sustainability of the near-natural forest stand.

The application discloses a method for artificially promoting natural regeneration of Tsuga chinensis, and comprises the following steps: forest thinning: removing broad-leaved trees in a Tsuga chinensis community, forming a forest gap around Tsuga chinensis mother trees and undergrowth seedlings, and retaining a canopy density of 0.5-0.6 after felling; artificial land preparation: cleaning and piling up litter on the ground in the forest gap to the periphery of the Tsuga chinensis seedling, and loosening the soil in the forest gap to a depth of 2cm-3cm; tending management: cleaning up weeds and grasses and harmful organisms around the Tsuga chinensis seedling in the forest gap, and performing seedling cultivation and topdressing. The method forms a forest gap through forest thinning, increases the forest understory light, promotes the growth of Tsuga chinensis seedlings, increases the contact probability of Tsuga chinensis seeds and soil through artificial soil loosening, improves the germination rate of Tsuga chinensis seeds, and promotes the growth of Tsuga chinensis seedlings through tending management, so that the purpose of promoting the regeneration of Tsuga chinensis forest is achieved.