森林与环境学报2018，Vol.38Issue(3)：302-308,7.DOI:10.13324/j.cnki.jfcf.2018.03.008
互花米草入侵对霞浦滨海湿地景观的影响
Invasion impact of Spartina alterniflora on the landscape of coastal wetland in Xiapu County
摘要
Abstract
Based on the multi-source high-resolution satellite imagery of coastal wetlands in 2006,2011 and 2016 in Xiapu County,using landscape transformation matrixand pattern indexes and center of mass transfer methods in the platform of GIS,the invasion impact of Spartina alterniflora on the landscape pattern of coastal wetland in Xiapu County were analyzed combining with Pearson correlation analysis.The results showed as follows: from 2006 to 2016,the area of natural and constructed wetlands generally decreased,and the area of non-wetland landscapes generally increased.The area of S.alterniflora expanded from 1 147.64 hm2in 2006 to 3 334.67 hm2in 2016,a total increase of 2 187.03 hm2.The landscape transfer matrix suggested that the area of S.alterniflora transferred to other landscape types was more obvious than S.alterniflora converting to other landscape types,and the types of landscapes shifting in and out are mainly intertidal beach,farm and farmland in the wetland landscape showing that the spatial pattern of these landscape types was heavily influenced by the invasion of S.alterniflora.The plaque change showed the overall fragmentation characteristics and proliferation of a wide range.Through the method of change of landscape centroids,from 2006 to 2011,the centroid of the S.alterniflora landscape moved 3.32 km eastward;from 2011 to 2016,the centroid moved to the northwest by 14.44 km.The correlation analysis indicated that LSI of S.alterniflora had a significant correlation with the landscape pattern index,and LSI(1.000**,P＜0.01)showed extremely significant positive correlation,and there was a significant negative correlation between AI and PLADJ(P＜0.05),indicating that the shape change of the landscape shape and the degree of aggregation were caused by the change of the patch shape of S.alterniflora.The results concluded that the spatial distribution,dilatation characteristics and pattern change have important impact on the coastal wetland landscape,and change the composition,diversity and heterogeneity of the regional landscape structure.关键词
互花米草/滨海湿地/景观/入侵/霞浦Key words
Spartina alterniflora Loisel./coastal wetland/landscape/invasion/Xiapu County分类
农业科技引用本文复制引用
张嘉诚,何东进,游巍斌,邓西鹏,张峰源,刘君成..互花米草入侵对霞浦滨海湿地景观的影响[J].森林与环境学报,2018,38(3):302-308,7.基金项目
福建省科技厅引导性项目(2015N0018) （2015N0018）
国家自然科学基金项目(31370624,30870435). （31370624,30870435）
