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A kind of biological treatment method of water-fluctuating zone

A technology of biological treatment and water-fluctuation zone, applied in botany equipment and methods, plant cultivation, horticulture, etc., can solve the problems of low survival rate of tree species and cannot be realized, so as to beautify the natural landscape, avoid eutrophication, and prevent and control soil erosion effect

Inactive Publication Date: 2018-11-16
BEIJING FORESTRY UNIVERSITY +1
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AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for biological treatment of water-fluctuating zones, with the purpose of overcoming technical defects such as low tree species survival rate and inability to achieve effective, stable and long-term biological treatment effects in existing water-fluctuating zone biological treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The water-fluctuation zone in this embodiment is the water-fluctuation zone formed in the Three Gorges Reservoir area of ​​the Yangtze River. The water level in the Three Gorges Reservoir area of ​​the Yangtze River changes alternately between 145 and 175m every year, the highest elevation of the hydrofluctuation zone is 175m, the elevation difference is 30m, and the area is 350km 2 .

[0025] Bioremediation methods for this zone include:

[0026] When the water level is above the water level (that is, when the water level drops), Zhongshan fir is planted in the area with an elevation of 165-175m. The 170m Zhongshan firs are mixed with Guojianglong and / or Bermudagrass.

[0027] The planting season of Zhongshan fir is spring. At this time, the Three Gorges reservoir area is the flood discharge season. During planting, planting holes with a size of about 40 cm long x 40 cm wide x 30 cm deep can be set at intervals. The seedling height of the selected Zhongshan fir is 1 ...

Embodiment 2

[0035] The water-fluctuation zone of this embodiment is the water-fluctuation zone formed in the Three Gorges Reservoir area of ​​the Yangtze River, and its planting method is the same as that of Example 1. The difference is that the seedling height of the selected Zhongshan fir is 1.3 to 1.5 meters, and the ground diameter is 0.8 meters. ~1 cm, the planting density is 85 plants / mu; the seedling height of the selected fodder mulberry is 35-45 cm, the ground diameter is 0.6-0.8 cm, and the planting density is 2800 plants / mu; when the water level drops each time, the planting The depth of loose soil in the area of ​​Zhongshan fir and fodder mulberry is about 15 cm.

[0036] After the above-mentioned biological treatment of the water-fluctuating zone has receded and increased water in the reservoir area for several times (four times), the survival rate of Zhongshan fir reached 98%, and the average height of Zhongshan fir was 0.8m, and the survival rate of forage mulberry reached 9...

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Abstract

The invention provides a hydro-fluctuation belt biological treatment method. The method comprises steps of planting Taxodium hybrid 'Zhongshanshan' in areas having 10 meters or lower elevation difference with the highest elevation of the hydro-fluctuation belt when the hydro-fluctuation belt is exposed out of the water surface, hybrid-planting fodder mulberry, Bermuda grass or entada pstems between the Taxodium hybrid 'Zhongshanshan'. By the use of the biological treatment method, high plant survival rate can be achieved; and great and stable biological treatment effect can be realized.

Description

technical field [0001] The invention relates to the fields of vegetation restoration and environmental protection, in particular to a method for biological control of a water-fluctuation zone. Background technique [0002] The ebb and flow zone refers to a phenomenon in which the land submerged in the water periodically emerges from the surface of the water due to seasonal fluctuations in the water level of lakes and reservoirs. At present, the largest water-fluctuation zone in my country is formed in the Three Gorges Reservoir. Since the reservoir’s water storage and flood discharge function will cause the water level of the reservoir to change between 145 and 175 meters in elevation, a water-fluctuation zone with a drop of 30 meters will be formed around the Three Gorges Reservoir area. . In addition to the Three Gorges Reservoir, there are also some lakes in my country that will form water-fluctuating zones due to seasonal rainy and dry seasons. Due to the scouring of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01G22/00
Inventor 张建军吴晓洪
Owner BEIJING FORESTRY UNIVERSITY
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