Method for constructing mangrove forest on aquaculture pollution mud flat

Abstract

The invention provides a method for constructing a mangrove forest on aquaculture pollution mud flat. Avicennia marina seedlings are planted on the low tide zone of the aquaculture sewage pollution mud flat; laguncularia racemosa seedlings and kenaelia candel seedlings are planted on the moderate tide zone to form a mixed forest; rhizophora stylosa seedlings, excoecaria agallocha seedlings and millettia pinnata seedlings are planted on the high tide zone to form a mixed forest; according to the mixed planting method of the rhizophora stylosa seedlings, the excoecaria agallocha seedlings and the millettia pinnata seedlings, a row of rhizophora stylosa, a row of excoecaria agallocha and a row of millettia pinnata are sequentially planted from the sea to the land to serve as an arrangement unit. The method is beneficial to achieving the population heterosis and boundary advantages of various mangrove varieties and promoting growth of the mangrove plants. The mangrove forest is constructed on the aquaculture pollution mud flat, the self-cleaning capacity of an aquaculture system is improved, the aquaculture disease occurrence rate is reduced by 20%, and the output of aquatic products is increased by 10% to 15%; the coastal landscape and ecological environment of the restored mangrove forest wet land attract a lot of birds to inhabit and reproduce, and compared with a traditional afforestation method, the biodiversity and ecological function are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of protective afforestation, and more specifically, relates to a method for cultivating polluted tidal flat mangroves. Background technique [0002] Mangroves are coastal tidal flats that grow at the junction of tropical and subtropical land and sea. They are special ecosystems that transition from land to sea. They play an important ecological role in preventing wind and waves, promoting siltation and making land, and purifying water. In recent decades, the rapid development of the coastal economy, the continuous discharge of polluted wastewater, and the over-exploitation of the coastal zone (such as sea reclamation, pond farming, etc.), have severely damaged the mangrove habitats distributed in the intertidal zone of tropical and subtropical coasts. . From the 1950s to the 1990s, the area of ​​mangroves in China dropped sharply by 68.7%, and more than 80% of the existing forests were degraded secondary fo...

AI Technical Summary

Problems solved by technology

Since most of the mangrove forests have been filled into land or reclamation for the development of economic industries such as aquaculture, especially the restoration of mangrove wetlands near shrimp ponds and fish ponds requires overcoming the pollution of aquaculture sewage; at the same time, due to the pollution of offshore aquaculture Intensified, which brings greater technical challenges and difficulties to mangrove cultivation