Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  22,842,200
  • Công bố khoa học và công nghệ Việt Nam

70.27

Kỹ thuật thuỷ lợi

Nguyễn Thị Thế Nguyên, PGS.TS Nguyễn Thị Thế Nguyên(1)

Một số vấn đề về chất lượng nước Vịnh Hạ Long

Some issues on water quality in the Ha Long bay

TC Khoa học Kỹ thuật Thủy lợi & Môi trường

2013

42

40-45

1859-3941

The Ha Long Bay, which is the Natural World Herritage, is located in the rapidly developed area. Social - economic activities happened there have caused great pressures on the environment of the Bay. The study is intented to point out issues and trends on water quality and to recommend additional water quality parameters. The study results show that substance concentrations in the water column tend to increase year by year (except the oil content). The substance concentrations during rainy season are higher than those in dry season. There are not so many differences in concentration between surface layer and bottom layer. In general, the water quality in the core zone of the Bay is still good. There are, however, local pollutions on nutrient, inorganic substances, oil and total suspended substance in the buffer zone and the hinterland zone. Therefore, parameters of COD, TOC, PO4, chlorophyll a should be added in the monitoring program.

TTTTKHCNQG, CVt 64