摘要
基于黄河三角洲滨海湿地2005、2010与2017年3个时期的Landsat TM/OLI影像,利用遥感和地理信息技术,对黄河三角洲滨海湿地的潮沟与植被覆盖度的分布格局与动态变化进行了分析,并运用网格搜索法,对研究区的潮沟与植被覆盖度进行相关分析。结果表明:(1) 2005-2017年黄河三角洲滨海湿地植被覆盖度不断提高,低植被覆盖度的面积减少了233.73 km^2,高植被覆盖度的面积增加了165.85 km^2;(2) 2005-2017年黄河三角洲滨海湿地的潮沟长度和面积不断增加,频数也在增加,其中2017年滨海湿地东南部的潮沟长度达到216.13 km,面积为22.23 km^2,长度和面积分别比2005年增加了36.91%和49%;(3) 2005-2017年黄河三角洲潮沟分布与植被覆盖度呈负相关,其中2010年、2017年的潮沟与植被覆盖度呈显著相关(P<0.05),这说明黄河三角洲的潮沟的空间分布与区域植被的长势密切相关。
Based on Landsat TM/OLI images in 2005,2010,and 2017,we analyzed the distribution and dynamics of tidal creek and vegetation coverage(VC)in the Yellow River Delta costal wetland by remote sensing and geographic information technologies.We conducted correlation analysis between tidal gully and VC in the study area using grid search method.The results showed that vegetation coverage of coastal wetlands in the Yellow River Delta continuously increased from 2005 to 2017.The area of low vegetation coverage decreased by 233.73 km^2,while that of high vegetation coverage increased by 165.85 km^2.From 2005 to 2017,the length and area of tidal creek in the Yellow River Delta coastal wetland continuously increased,and the frequency also increased.In 2017,the length and area of tidal gully in the southeast of the coastal wetland reached 216.13 km,and the area was 22.23 km^2.From 2005 to 2017,the length of tidal creek was negatively correlated with VC,and the tidal creek in 2010 and 2017 was significantly correlated with VC(P<0.05).
作者
刘露雨
屈凡柱
栗云召
于君宝
杨继松
安成邦
LIU Lu-yu;QU Fan-zhu;LI Yun-zhao;YU Jun-bao;YANG Jisong;AN Cheng-bang(College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China;Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta,Biruhou University,Binzhou 256600,Shandong,China;The Institute for Advanced Study of Coastal Ecology,Key Laboratory of Ecological Restoration and Conservation of Coastal Wetlands in Universities of Shandong,School of Resources and Environmental Engineering,Ludong University,Yantai 264025,Shandong,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2020年第6期1830-1837,共8页
Chinese Journal of Ecology
基金
国家重点研发计划项目(2017YFC0505902)
国家自然科学基金项目(41871087)
山东省黄河三角洲生态环境重点实验室开放基金(2016KFJJ03)资助。
关键词
潮沟
植被覆盖度
网格搜索法
滨海湿地
tidal creek
vegetation coverage
grid search method
coastal wetland
