摘要
防护林防风效能的研究主要通过疏透度、林带间距、树高与林带宽度的比值等数据来间接分析。基于高精度遥感影像,采用目视解译和最大似然法获取风灾作物倒伏面积,利用NDVI提取防护林带,通过防护林与作物倒伏面积之间的分析,对防护林防风效能进行定量评价。研究结果表明,林网密度、林带面积(东侧加北侧)、林带宽度(东侧)等指标均与倒伏面积呈对数函数关系,并提出适宜的防护林布局指标。
The study on the windbreak efficiency of shelter forest is mainly realized by the data of the degree of thinning,the distance of the forest belt,the ratio of height to width of the forest belt.This article try to evaluate the shelter forest windproof efficiency by using the method of visual interpretation and the maximum likelihood for cyclone crops lodging area as well as the extraction of shelter belt using NDVI,then do quantitative analysis between the shelter forests and crops lodging area based on high precision remote sensing image.The results show that the density of forest,forest area(east and north direction),belts width(east)index has a logarithmic relationship with lodging area,and puts forward the protection forest layout suitable indicators.This paper can provide scientific and quantitative methods for the evaluation of the windbreak efficiency of farmland shelter forest,and provide scientific guidance and research ideas for the rational distribution of shelter forest.
作者
张新乐
于微
邱政超
刘焕军
王楠
赵博文
ZHANG Xinle;YU Wei;QIU Zhengchao;LIU Huanjun;WANG Nan;ZHAO Bowen(College of Resources and Environment,Northeast Agricultural University,Harbin 150030,China;Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130012,China)
出处
《灾害学》
CSCD
北大核心
2018年第2期76-82,共7页
Journal of Catastrophology
基金
国家自然科学基金(41671438)
中国科学院东北地理与农业生态研究所"引进优秀人才"项目
关键词
农田防护林
风灾
防风效能
作物倒伏
遥感监测
倒伏提取
farmland shelterbelt
wind hazard
windbreak efficiency
crops lodging
remote sensing monitoring
lodging extraction
