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Method for quickly reconstructing subculture peat sedge community by using soil propagule bank

A peat and body bank technology, applied in the fields of land preparation methods, botanical equipment and methods, applications, etc., can solve the problems of rapid reconstruction of peatland sedge community and other problems, so as to stimulate self-recovery potential, improve recovery potential, and benefit stable maintenance effect

Active Publication Date: 2022-03-25
NORTHEAST NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology has not found a solution for how to quickly rebuild the sedge community in the peatland

Method used

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  • Method for quickly reconstructing subculture peat sedge community by using soil propagule bank
  • Method for quickly reconstructing subculture peat sedge community by using soil propagule bank
  • Method for quickly reconstructing subculture peat sedge community by using soil propagule bank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] On April 1, 2019, 5 soil profiles were collected in the peatland according to the five-point method, the thickness of the mineral soil layer of each soil profile was measured, and the average value was taken to obtain the peeled thickness of the peatland mineral soil layer of 10cm.

[0066] On April 10, 2019, when the 10 cm of mineral soil on the surface of the peatland soil was completely thawed, a bulldozer was used to peel off the mineral soil layer in the peatland, and the peeling thickness was the thickness mentioned above, and the peatland to be restored was obtained. Keep the water level of the peatland to be restored at a distance of 10-20cm from the surface, preferably without water accumulation on the surface. The water for the peatland to be restored comes from the dams built around the peatland to be restored.

[0067] In May 2019, the seeds of Carex in the peatland to be restored germinated. At this time, species other than Carex in the peatland to be resto...

Embodiment 2

[0073] Take 2 groups of soil layers whose depths are 0-5cm, 5-10cm, 10-20cm, and 20-30cm in the peat land to be restored, and put them in the cultivation pots. The watering amount of the first group with different soil depths of the peatland to be restored should be moistened and held in balls; the watering amount of the second group should be flooded when the water level is 5cm higher than the soil surface. Observe the species richness and seed density in the peatland to be restored under different soil depths and different water level control conditions. The result is as image 3 shown.

[0074] Observe the density of sedge in the peatland to be restored under different soil depths and different water level control conditions, the results are as follows Figure 4 shown.

[0075] image 3 The results showed that the seed density and species richness of soil seeds germinated under flooding conditions were significantly lower than those under wet conditions, and the species...

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Abstract

The invention relates to the technical field of ecological restoration of peat land, in particular to a method for quickly reconstructing a sedge community in a subculture peat land by using a soil propagule bank. The method comprises the following steps: (1) stripping mineral soil on the surface layer of the peat land to obtain a to-be-recovered peat land; (2) performing water level management and community management on the to-be-recovered peat land to obtain a sedge community. According to the method, the stably propagated sedge community can be obtained within three years, the coverage of the sedge community reaches 90% or above, and the method is suitable for rapid reconstruction of the sedge community in the peat land in the north.

Description

technical field [0001] The invention relates to the technical field of peatland ecological restoration, in particular to a method for rapidly rebuilding a sedge community in degraded peatland by using a soil propagule bank. Background technique [0002] Peatland is an important type of marsh wetland, accounting for 2.84% of the land area, storing more than 1 / 3 of terrestrial soil carbon, and playing an important role in mitigating global warming. The dominant plant communities in peatlands, such as sedges, reeds, peat moss, etc., are the key to their carbon sink function. However, peatlands are subject to human disturbance such as agricultural reclamation, peat mining, and overgrazing. The area of ​​peatlands in the world continues to shrink, native vegetation is destroyed, and the carbon sink function is seriously damaged. Therefore, the ecological restoration of peatlands, especially the restoration of dominant vegetation communities is the key and prerequisite for the re...

Claims

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Application Information

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IPC IPC(8): A01G22/00A01B79/00A01B79/02
CPCA01G22/00A01B79/00A01B79/02Y02A40/22
Inventor 王铭王升忠徐玉伟任增礼
Owner NORTHEAST NORMAL UNIVERSITY
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