In coastal wetland ecology, most studies only consider the bottom-up effect, that is, the effect of abiotic factors on plant survival, growth and reproduction, while ignoring the top-down effect (i. e. , herbivory). On the other hand, the eutrophication situation is more serious than ever before in global coastal wetland, soil nutrient enrichment may affect the top-down effect and then influence the coastal wetland vegetation. Therefore, this paper aims to synthesize the mechanisms of soil nutrient and the top-down effect jointly regulating the coastal wetland plant population and community. Then we pointed out the limitations in current studies to provide references for the future studies: (1) How the unique plant groups and environmental factors of the coastal wetland responding to the joint influences of soil nutrient enrichment and the top-down effect needs to be studied; (2) lack of the long-term mechanism of soil nutrient enrichment and top-down effect on the coastal wetland vegetation; (3) investigating the top-down effect of parasitic and bacterial consumers on the coastal wetland vegetation is rare. Additionally, we introduced the long-term experimental platform of soil nutrients and top-down effects of the coastal wetland in Yellow River Delta, and it may provide important information to guide the conservation of coastal wetland vegetaion of the Yellow River Delta under the background of global change.
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