Method for efficiently repairing contaminated wetland with artificial ecosystems
An ecosystem and wetland technology, applied in the field of efficient restoration of polluted wetlands, can solve problems such as ignoring economic benefits, not maximizing ecological benefits, secondary pollution, etc., to improve extraction and degradation rates, eliminate secondary pollution, and scope of application wide effect
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Examples
Embodiment 1
[0032] The selection of embodiment 1 material
[0033] (1) Arbor: Select woody plants with strong salt tolerance, strong adaptability and stress resistance, fast growth, high accumulation or degradation of various pollutants, and certain economic value.
[0034] Preferable ones are: small trees such as chinensis, candela, and olive, which have high tolerance and high-efficiency fixing ability to various heavy metals, and have the ability to absorb and degrade organic pollutants.
[0035] (2) Trees and shrubs: choose trees and shrubs with strong salt tolerance, strong adaptability and stress resistance, fast growth rate, high accumulation or degradation of various pollutants.
[0036] It is preferably: the coastal wetland arbor and shrub plant tung flower tree that can grow normally under the loose forest with negative tolerance.
[0037] (3) Perennial herbaceous plants: select herbaceous plants with strong salt tolerance, strong adaptability and stress resistance, fast growth...
Embodiment 2
[0041] Example 2 Construction of Ecosystem
[0042] Experimental materials: bone soil, tung flower tree, hippocampus tooth, centipede grass, vetiver grass, clam worm.
[0043]1) The arbor plant A. chinensis is selected, and its seedlings are derived from the development of hypocotyls of cryptopitalia. The hypocotyls of A. chinensis are picked from the A. basilisk forest in the mangrove wetland in April and May every year. In order to prevent the tidal force from reducing the colonization rate of the hypocotyls of A. chinensis, it takes one to two months to cultivate them. After the hypocotyls grow roots and 2 to 4 pairs of true leaves, they are planted in polluted wetlands at a depth of about 5 to 8 cm. . The planting density is 30-40cm between plants and 40-50cm between rows.
[0044] 2) Select the arbor and shrub tung tree, the seedlings of which come from the hypocotyl development, and the hypocotyls of the tung tree are collected from the tung tree forest in the mangrove...
experiment example 1
[0051] The sediment was collected from the south bank of the Jiulongjiangkou Mangrove Nature Reserve in Caoputou Village, Fugong Town, Longhai County, Zhangzhou City, Fujian Province (24°24′N, 117°55′E). CdCl2 (0, 1, 2, 4mg / kg·DW) was activated for two months. Fully mix once every five days, keep the surface of the sediment covered with water during the activation period, and use ultrapure water to supplement the evaporated water loss. Add the sediment after about 3kg activation in each seedling pot, each handles three repetitions, and every pot transplants 4 cods that grow similarly and have two pairs of true leaves, and process for 45 days. The results are shown in Table 1.
[0052] Table 1
[0053]
[0054] The results showed that the distribution law of cadmium in A. marina tissue was root>stem>leaves. The accumulation of cadmium in roots has exceeded the concentration of cadmium in the surrounding environment. The four treatments had no significant effect on the gr...
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Description
Claims
Application Information
- IPC
- B09C1/10
- CPC
- B09C1/10; B09C1/105; Y02A40/22
- Inventors
- 杜道林; 李健