Trước đây hồ Gươm là nơi thải nước

Trước đây hồ Gươm là nơi thải nước thải sinh hoạt. Các nhà hàng xung quanh đó cũng đổ nước thải ra hồ  hồ bị suy thoái nghiêm trọng  web thức ăn trong hồ bị thay đổi nhiều.
Ban quản lý Hồ Hoàn Kiếm hằng năm vẫn thả một lượng cá nhất định vào hồ, nhằm mục đích tạo nguồn thức ăn cho Rùa và cân bằng ổn định hệ sinh thái, không để cho tảo và sinh vật phù du phát triển quá mức gây nên tình trạng phú dưỡng.
Trước đây, Hồ Hoàn Kiếm còn trồng cả sen trong hồ. ngoài việc tạo cảnh quan đẹp mắt thì sen còn cung cấp oxy hòa tan trong nước giúp sinh vật hô hấp.
- Recreation:
Người dân trong khu vực quận Hoàn Kiếm rất thích ra hồ vào các buổi sáng, chiều và tối, đặc biệt là vào mùa nóng, nhiệt độ ở khu vực xung quanh hồ thấp hơn so với những nơi khác bởi, thích hợp để đi bộ và tập thể dục. Walking and playing sports in the green space is not only a good form of physical exercise but also lets people relax. The role that green space plays in maintaining mental and physical health is increasing being recognized in all over the world.

Kết quả (Anh) 1:

Formerly Lake is where waste water discharges. The restaurant around that also pour water discharged seriously degraded Lakes   food web in Lake changed much. Lake Management Committee annually still drop a certain fish in the Lake, aims to create a food source for the turtles and balance the ecosystem stability, do not let the algae and plankton overgrowth causing eutrophication status.Previously, the Lake is still growing both in the outdoor shower. In addition to creating beautiful landscapes, the sen also provides oxygen dissolved in the water help respiratory organisms.-Recreation: People in the area hoan Kiem Lake enjoyed in the morning, afternoon and evening, especially in the hot season, the temperature in the area around the Lake is lower than other places by, appropriate to walk and exercise. Walking and playing sports in the green space is not only a good form of physical exercise but also lets people relax. The role that green space plays in maintaining mental and physical health is increasing being recognized in all over the world.

Kết quả (Anh) 2:

Previously Sword lake where sewage waste. The restaurants around that dump sewage into the lake and the lake   serious deterioration in lake food web change much.
The Management Board annual Hoan Kiem Lake still drop a certain amount of fish in the lake, in order to landing create food sources for turtles and stable balance of ecosystems, not to the algae and plankton overgrowth causes eutrophication status.
Previously, Hoan Kiem Lake was planted in the lotus pond. in addition to the beautiful landscape, the lotus also provide dissolved oxygen in the water to help breathing organisms.
- Recreation:
The people in the region enjoyed Hoan Kiem lake in the morning, afternoon and evening, especially in hot weather, the temperature in the area around the lake is lower than elsewhere by, suitable for walking and exercise. Walking and playing sports in the green space is not only a good form of physical exercise lets nhưng People relax. The role có green space plays in mental and physical health Maintaining is being recognized companies in all tăng over the world.