Technological solutions for saline soil environment restoration in aquaculture ponds in Dong Chau Commune, Hung Yen Province

Do Quy Manh; Nguyen Quoc Huy; Nguyen Minh Duc; Ha Tra My; Le Anh Tuan; Nguyen Viet Duc; Nguyen Thanh Luan; Pham Ngoc Tu

doi:10.15625/2525-2518/23646

Author affiliations

Authors

Do Quy Manh \(^1\) Institute of Ecology and Works Protection (WIP), No. 267 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam https://orcid.org/0009-0007-7393-2131
Nguyen Quoc Huy \(^1\) Institute of Ecology and Works Protection (WIP), No. 267 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam
Nguyen Minh Duc \(^1\) Institute of Ecology and Works Protection (WIP), No. 267 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam
Ha Tra My \(^1\) Institute of Ecology and Works Protection (WIP), No. 267 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam
Le Anh Tuan \(^1\) Institute of Ecology and Works Protection (WIP), No. 267 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam
Nguyen Viet Duc \(^1\) Institute of Ecology and Works Protection (WIP), No. 267 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam
Nguyen Thanh Luan \(^2\) The Key Laboratory of River and Coastal Engineering (KLORCE), No. 1, Alley 165 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam
\(^3\) Thuyloi University, 175 Tay Son, Kim Lien Ward, Ha Noi, Viet Nam
Pham Ngoc Tu \(^2\) The Key Laboratory of River and Coastal Engineering (KLORCE), No. 1, Alley 165 Chua Boc, Kim Lien Ward, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/23646

Keywords:

aquaculture ponds, bio-engineering, water regulation, saline soil restoration, Red river delta biosphere reserve

Abstract

Conversion of mangrove forests to coastal aquaculture has led to severe saline soil degradation in the Red River Delta Biosphere Reserve, exemplified by the study area in Dong Chau commune, Hung Yen province. The persistent issue is the conversion resulting in deep water levels (averaging 0.65 m to 1.3 m), which prevents tidal exposure necessary for mangrove regeneration. To address this, we developed and applied an integrated technological solution package. This package included ecological engineering for embankment stabilization, ridge techniques to significantly raise the planting area elevation, and a controlled water regulation regime to ensure target tidal exposure. The integrated approach successfully lowered the local inundation degree at the planting zone and created suitable physical conditions for restoration. Consequently, the survival rate of planted mangroves was over 80 % in the model area, compared to under 30 % using conventional methods. These results demonstrate a robust scientific basis for developing stable, sustainable silvo-aquaculture models through the restoration of degraded saline soil environments in similar coastal areas across Viet Nam.

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