长江大保护战略下河口滩涂的保护对策研究

Protection measures for estuary tidal flats under the state-strategy of the Yangtze River protection

针对长江来沙持续减少引起河口滩涂侵蚀日益严峻的现象,提出长江口滩涂保护的重要性;并以九段沙、横沙东滩为研究典型,探讨分析不同定位滩涂宜采取的不同保护对策。结论如下:对于生态保护区滩涂,宜通过改变外围环境实施滩涂保护、促进滩面缓慢淤涨;对于非生态保护区滩涂,可采取积极主动的护滩措施,且可通过工程有目的地培育高-中-低滩有序分布的滩涂基底,在实现滩涂资源稳定的基础上提升滩涂生态品质,增强滩涂区域功能,积极响应长江大保护战略。

In view of the increasingly serious phenomenon of tidal flats erosion caused by the continuous decrease of sediment coming from the Yangtze River,we emphasize the importance of the protection of the Yangtze Estuary tidal flats. Taking the Jiuduan Shoal and the Hengsha East Shoal as examples, we probe into different protection measures to be taken for different shoals.The conclusion is drawn as follows: the tidal flats in ecological preserved areas shall be protected by changing the peripheral environment to promote the gradual accretion of the tidal flats,while the tidal flats in the non-ecological preserved areas shall be protected by initiative measures and works to cultivate a tidal flat in a high-medium-low ordered shoal shape,to improve the ecological quality of the tidal flats and enhance the regional functions of the tidal flats on the basis of realizing the stability of tidal flats resources,and actively respond to the state strategy of the Yangtze River Protection.