Assessment of Ecological Restoration Effects in Tianfu National Wetland Park Based on Enhancement of Waterfowl Diversity
The diversity of waterfowl is a key indicator of wetland ecological health and an important content of wetland ecological restoration.This paper takes the ecological restoration area of Tianfu National Wetland Park in Suzhou as the research object to analyze the effect of ecological restoration design of sites through field investigation and data analysis,and explores the impact of habitat change on waterfowl diversity.The results are as follows:1)209 species of birds are recorded in the study area,of which shorebirds,herons and wild ducks account for 39%,26%and 22%,respectively.The Shannon-Wiener diversity index increases from 2.34 to 3.15,and the diversity of waterfowl increases significantly;2)The total water area increases by 22.76 ha,and the shortest axis of the water body is more than 50 m,while the longest axis is more than 150 m,with the compactness at more than 0.4,which increases the environmental capacity of wetland and provide suitable habitats for a variety of waterfowls;and 3)The slope gradient of the site is less than 10%,the shoreline development coefficient is more than 2,and the near-circle ratio is less than 0.9.The vegetation is composed of 77 species,dominated by native herbaceous plant.The vegetation coverage ranges from 40%to 70%,and the vegetation height is between 30-40 cm.This means that the site can meet the needs of waterfowls for forage and shading.In conclusion,the habitat change in the study area is closely related to the improvement of waterbird diversity,and the ecological restoration design can play an active role in the protection and promotion of biodiversity.
waterfowl diversitywetland ecological restorationTianfu National Wetland Park
NETL
NSTL
万方数据
