Nghiên cứu khả năng tích luỹ các-bon trong cây Mắm biển (Avicennia marina) ở giai đoạn cây mạ tại Vườn Quốc gia Xuân Thuỷ, tỉnh Nam Định=Research on carbon accumulation potential in Avicennia marina at the seedling stage in Xuan Thuy National Park, Nam Dinh province

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Tác giả: Thị Lan Hoàng, Khắc Tú Thái, Thị Mai Sen Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Lâm nghiệp, 2024

Mô tả vật lý: tr.60-66

Bộ sưu tập: Metadata

ID: 253109

Thêm vào giỏ

Để xác định lượng carbon được tích luỹ trong cây Mắm biển (Avicennia marina) ở giai đoạn cây mạ 1 tháng tuổi, nghiên cứu đã thiết lập và tiến hành thí nghiệm với 4 độ mặn khác nhau (10, 15, 20 và 30‰). Kết quả nghiên cứu cho thấy (i) Sinh khối khô tích lũy ở giai đoạn này có giá trị là 0,318 g. Trong đó, sinh khối khô của thân là cao nhất (0,157 g) chiếm 49% trong tổng sinh khối khô tích lũy. Tiếp đến là trong rễ với 0,099 g chiếm 31% tổng sinh khối khô. Và thấp nhất ở lá với giá trị đạt được là 0,062 g chiếm 20% tổng sinh khối khô
(ii) Hàm lượng các-bon tích lũy trong cây có giá trị là 0,119 gC. Trong đó, hàm lượng các-bon tích lũy trong thân chiếm tỉ lệ cao nhất với tỉ lệ 53% (0,063 gC)
tiếp theo là lượng các-bon tích lũy trong rễ chiếm 26% (0,03 gC)
và cuối cùng là lá chiếm 21% (0,026 gC). Nghiên cứu này có ý nghĩa quan trọng trong việc đánh giá khả năng tái sinh thành công của trụ mầm vì việc xuất hiện tích luỹ các-bon đồng nghĩa với việc có sự dịch chuyển trạng thái của cây mạ trong giai đoạn phát triển, chuyển từ cây mạ sang cây con. Dựa vào đó có thể xác định được khả năng thích nghi với điều kiện lập địa ở các độ mặn khác nhau của Mắm biển, tạo tiền đề để đưa ra các giải pháp liên quan đến phục hồi RNM bằng con đường tái sinh tự nhiên, góp phần phục hồi và bảo vệ hệ sinh thái quan trọng này.To determine the amount of carbon accumulated in Avicennia marina (A.marina) at the at the 1-month-old seedling stage, the research set up and conducted experiments with 4 different salinities (10, 15, 20 and 30‰). Research results show that (i) The dry biomass accumulated in the A.marina at the seedling stage has a value of 0.318 g. Among them, the dry biomass of the stem is the highest (0.157 g) accounting for 49% of the total dry biomass. Next is in the roots with 0.099 g accounting for 31% of the total dry biomass. And the lowest in leaves with a value of 0.062 g, accounting for 20% of the total dry biomass
(ii) The accumulated carbon content in trees is 0.119 gC. In particular, the carbon content accumulated in the stem accounts for the highest in the tree at 53% (0.063 gC)
Next, the amount of carbon accumulated in the roots accounts for 26% (0.03 gC)
and finally leaves account for 21% (0.026 gC) of the total carbon accumulated in the plant. This study is important in evaluating the ability of successful regeneration of propagules because the occurrence of carbon accumulation means that there is a change in the state of seedlings during the development and transformation stages. from seedling to seedling. Based on that, it is possible to determine the ability of A.vicennia to adapt to site conditions at different salinities, creating a premise for providing solutions related to mangrove restoration by natural regeneration. contribute to restoring and protecting this important ecosystem.

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