鑽石舞台

This study examines how the spatiotemporal patterns of functional groups of macro benthos responded to coastal wetland restoration projects. Compared with the traditional single-species approach, methods for identifying functional groups of macro benthos more comprehensively reflect the states of the wetland, i.e., spatiotemporal patterns and the related influencing factors. In this study, the macro benthos samples, soil samples, and plant samples were collected at each same sample site in April, July, and October of 2017 and January of 2018. After classification of the macro benthos functional groups according to some traits, the factors influencing the functional groups were examined by a linear stepwise regression. The results showed that all macro benthos were classified into 11 different functional groups based on their traits of forms of locomotion, feeding habits, and food gathering methods. The semi-mobile suspensivores (FDX), semi-mobile surface detritivores (SDX), and Jawed mobile carnivores (CMJ) were the main groups observed in a year. Regression analysis showed that particle size, moisture content, and plant height were important common factors influencing most groups. The main influencing factor of FDX was particle size (P=0.020). Moisture content (P=0.004), plant cover degree (P=0.008), and particle size (P=0.032) comprised the main restrictions of SDX in summer. Soil salinity (P=0.040) and plant height (P=0.011) were the factors influencing CMJ in autumn and winter. This study shows the changing characteristics of macro benthos functional groups to promote coastal wetland restoration and future biogeomorphological studies.

大型底棲動物功能群的時空格局對濕地修復工程的響應方式及影響因素是濕地修復領域研究的一個熱點問題。與傳統的單一物種分類方式相比較，功能群的研究方式能更加全面地反映濕地的演化狀態及格局分異。研究在2017 年的 4 月、7 月、10 月和 2018 年的 1 月採集了大型底棲動物、土壤及植物樣本，在底棲生物功能群劃分的基礎上，採用逐步回歸方法分析了功能群的時空格局變化其影響因素。結果表明，根據運動方式、取食習性和食物收集方式等性狀，研究區域的底棲動物可以被分 成 11 種有效功能群。半運動懸浮物食者（FDX）、半運動表面碎屑食者（SDX）、運動以顎肉食者（CMJ）是一年中觀察到的三種主要功能群。回歸分析表明，土壤粒徑、水分含量、植物高度是多數功能群的共同影響因素。其中半運動懸浮物食者（FDX） 功能群的主要影響因素是土壤粒徑（P=0.002）；夏季半運動表面碎屑食者（SDX）功能群的主要影響因素是水分含量（P=0.004）、 植物覆蓋度（P=0.008）、土壤粒徑（P=0.032）；秋冬季節運動以顎肉食者（CMJ）功能群的主要影響因素是土壤鹽度（P=0.040）、 植物高度（P=0.011）。本研究對理解生態修復工程後的濕地狀態演變及演化機理提供了理論基礎，對未來的生物地貌研究提供了機理支撐。