应全面评估大米草在我国沿海地区扩展繁殖带来的利弊

Overall Evaluation on Advantages and Disadvantages Caused by Wide Reproduction of Spartina at Our Coastal Areas

为了对引进的大米草属植物的功过进行评价,我们对国内的研究结果进行了综合分析,目前我国引进了3种大米草属植物,这些种类在我国固滩、护堤、促淤中发挥了重要作用,在这些地区对大米草的评价较高;然而在另一些地方也危害当地生态系统、引发生物多样性丧失,并对滩涂养殖造成经济损失。我们认为对大米草功过评估需要做更深入的研究,需要考虑生态影响和经济效益,需因不同地点作具体分析。

Currently,there have been three Spartina species introduced into China.In order to evaluate the benefit and loss of Spartina's introduction,we analyze the available results in different localities.Due to their rapid growth and dense roots and stems,they have been playing an important role in protecting beaches and dikes and increasing sediment which results lands increased in some areas,where they are greatly appreciated.However,they also harm local ecosystems,lead to biodiversity loss and decrease production of beach aquiculture in other areas.We find it necessary to evaluate benefit and loss of spartina's introduction more detail and depend on local aims.