Yangcheng Lake, which produces hairy crabs, is located in China's Jiangsu Province.

Yangcheng Lake is located in longitude 120°39′-120°51′ East, latitude 31°21′-31°30′ North, in the territory of Suzhou City, Jiangsu Province, about 10 kilometers southwest of downtown Suzhou, about 60 kilometers east of Shanghai City, about 30 kilometers north of the Yangtze River, is one of the most important freshwater lakes in Jiangsu Province.

Yangcheng Lake is surrounded by Bacheng Lake, Puppet Lake, eel Jing, south of the Qingjian Lake, west of the Shengze Dang and other neighboring five small lakes **** with the composition of the Yangcheng Lake group.

Because of the unique geographical position of Yangcheng Lake, coupled with the water system, hydrology, water and lake shore zigzag folds, wide shore, flat bottom and other natural conditions, breeding a rich variety of aquatic biological resources.

Water quality physical and chemical

Yangcheng Lake is closer to the Yangtze River, is still a typical freshwater lake. Its water type for the bicarbonate calcium group two, is a soft water type. In eight large and medium-sized lakes in southern Jiangsu Province, the chemical composition of its lake water calcium ion content is high in the second place, up to 23.78 m g / liter.

And magnesium ion content is also high in the third place, up to 6.0 m g / liter, total hardness is also high in the second place, up to 1.68 m g / liter, PH value of 7.3-8.6, slightly alkaline; dissolved oxygen 8.5-17.34 m g / liter, transparency of an average of 1.33 meters.

This fully demonstrates that the water quality of Yangcheng Lake is very suitable for hairy crab growth, especially rich in calcium and magnesium ions on the hairy crab molt, shell occurrence, shell color and hardness of the formation of extremely favorable. Formed Yangcheng Lake hairy crab shell thin and tough characteristics.

Yangcheng Lake hairy crabs in its special geographic location, developed and relatively independent of the water system, zigzagging and pleated lakeshore, extending the broad shore, flat and hard bottom of the lake, moderate depth of water, stable water level, abundant water, soothing water, good water quality, mild climate, a rich variety of bait resources, and other natural ecosystems, such as the long-term integrated impact of the breeding of the Lake Yangcheng hairy crabs.

Reference: Baidu Encyclopedia-Yangcheng Lake hairy crabs