Influence of land use change on the waterbird community of Sihwa Lake,Republic of Korea  

作　　者：Eunjae Lee Junghee Sagong Yohan Lee 

机构地区：[1]Urban Planning Research Division,Daejeon Sejong Research Institute,Daejeon,Republic of Korea [2]Dept.of Spatial&Environmental Planning,Chungnam Institute,Gongju,Republic of Korea [3]Department of Forest Resources and Landscape Architecture,Yeungnam University,Gyeongsan,Republic of Korea

出　　处：《Avian Research》2020年第3期349-362,共14页鸟类学研究（英文版）

基　　金：This was supported by 2020 Yeungnam University Research Grant.

摘　　要：Background:Land use and development alter mudflat and wetland habitat availability,although mudflats and wetlands provide important stopover habitats for shorebirds during the spring and autumn migrations and support communities of ducks and geese during the winter months in the Republic of Korea.This study investigated land use changes around Sihwa Lake(Republic of Korea)and evaluated the effect of these changes on waterbird community characteristics.Methods:We conducted a land-use-change analysis at the medium-resolution level using land cover maps for 2001,2007,2009,and 2014.Also,a tidal stream survey was conducted in Sihwa Lake and the surrounding reclaimed mudflats every season for 10 years(2003-2012)to identify the seasonal and interannual variations in waterbird species composition.To determine the total annual waterbird species and population counts,species diversity index,and interspecies variations,a TRIM(trends and indices for monitoring data)analysis was used.Results:Wetland area decreased more than 10%while agricultural land,barren land,and grassland area increased more than 10%due to continuous reclamation activities around Sihwa Lake.Barren land later turned into agricultural land or other land use.Sixty-three species and 566,623 individuals were recorded.The number of species,population size,and species diversity index by year and by species showed decreasing trends that were more marked in spring and summer.Furthermore,seasonal and annual variations in waterbird species composition showed decreasing trends in dabbling ducks,herons,grebes,and shorebirds but diving ducks displayed increasing trends.In particular,shorebirds were reduced to a greater extent than other waterbird species because of the reduction and simplification of the intertidal zone,and shallow waters caused by reclamation and road construction.Conclusions:Increased development and construction around Sihwa Lake has altered migratory shorebird populations with a general decline in species diversity and population size.The greatest

关 键 词：Land use development Migratory bird populations Population trends Waterbird population size 

分 类 号：Q958.8[生物学—动物学]