Zhong Jian Island is nearly100km away from the main island of Yongle Atoll and only 200km away from the Vietnamese mainland. Located at the frontier of Xisha coastal defense, its sea area is the main sea and air passage from the Far East to Southeast Asia. Merchant ships and planes of different nationalities travel from south to north. Surrounded by natural fishing grounds, fishing boats from China and Viet Nam fish all year round; The nearby Zhong Jian Basin is rich in oil and natural gas, and its geographical location is very important.
Zhongjian Island is a sand ash island developed on an oval reef plate about 4 kilometers long and 2.2 kilometers wide. The island is nearly triangular, 2000 meters long and 950 meters wide. There are sand dikes around, which are higher in the northeast due to the influence of the northeast monsoon. The middle part of the depression is not obvious, and the depression often accumulates water with a water depth of about 0.5 meters.
Ecological resources of Zhongjian Island;
Since the officers and men stationed in Zhongjian Island in 1970s, many trees have been planted and afforested. More than 3,000 Pinus massoniana trees, 1000 horns, more than 200 coconut trees and more than 2,000 square meters of climbing vines are planted on the island.
Every year in late spring and early summer, there are tens of thousands of crested terns on the island, which is the island with the largest number of seabirds in Xisha Islands.
The reef around Zhongjian Island is 2-3 nautical miles wide and 2 meters deep at high tide. It is a breeding ground for all kinds of seafood. Besides the famous horseshoe snail, there are many Japanese ginseng and soft-shelled turtle. The sea around coral reefs is rich in plankton, which attracts many fish. In addition, the outer edge of the reef is deep, which is beneficial to towing and fishing. It is common to catch a mackerel a day.
Refer to the above content: Baidu Encyclopedia-Zhong Jiandao