Đánh giá chât lượng nước mặt vào khô ở khu bảo tồn đất ngập nước Láng Sen, huyện Tân Hưng, tỉnh Long An=Assessment of Surface Water Quality in Lang Sen Wetland Reserve Tan Hung District, Long An Province in Dry Season

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Diễm Kiều Lê, Quốc Nguyên Phạm

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học Nông nghiệp Việt Nam, 2025

Mô tả vật lý: tr.222-232

Bộ sưu tập: Báo, Tạp chí

ID: 474177

Thêm vào giỏ

Nghiên cứu được thực hiện nhằm đánh giá hiện trạng chất lượng nước mặt ở Khu bảo tồn đất ngập nước Láng Sen, tỉnh Long An. Chất lượng nước mặt của khu bảo tồn được khảo sát vào mùa khô ở các tiểu khu 5, 6, 9, 10, 11 và 12 (3 vi trí/tiểu khu), thông qua các thông số vật lý và hóa học của nước. Kết quả cho thấy, hàm lượng tổng chất rắn lơ lửng, oxy hòa tan, nhu cầu oxy hóa học, đạm tổng dao động lần lượt là 16,8-30,9
0,67-1,73
15,5-44,3
0,99-3,34
0,09-0,63 mg/l hầu hết không đạt QCVN 08:2023/BTNMT (mức B, Bảng 3). Bên cạnh đó, độ dẫn điện, hàm lượng tổng chất rắn hòa tan, độ đục, đạm nitrit cũng cao, sẽ ảnh hưởng đến sinh vật thủy sinh. Vì vậy, cần có giải pháp giám sát, quản lý chất lượng nước, đặc biệt là ở tiểu khu 9 và 10 nhằm đảm bảo môi trường nước thuận lợi cho công tác bảo tồn tốt các loài cá lớn ở khu bảo tồn.The study was conducted to assess the current status of surface water quality in Lang Sen Wetland Reserve, Long An Province. Surface water quality of the reserve was surveyed in the dry season at 5, 6, 9, 10, 11 and 12 subzone (3 sample points/ sub-zone) using physical and chemical parameters of water. The results showed that the concentrations of total suspended solids, dissolved oxygen, chemical oxygen, total nitrogenof water in the sub-zones ranging 16.8-30.9
0.67-1.73
15.5-44.3
0.99-3.34 mg/l, respectively, not meeting the standard justified in QCVN 08:2023/BTNMT. In addition, the electrical conductivity, total dissolved solids, turbidity, and nitrite nitrogen were also high that may affect aquatic organisms. Therefore, it is necessary to take measures to effectively monitor and manage water quality, especially in sub-zones 9 and 10 to ensure a favorable water environment for the conservation of large fish species in the reserve.

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