黑龙江农业科学Issue(1)：23-28,6.DOI:10.11942/j.issn1002-2767.2024.01.0023
基于Landsat8时间序列的宁夏青铜峡市农田防护林提取
Extraction of Farmland Shelter Forest in Qingtongxia City of Ningxia Based on Landsat8 Time Series
摘要
Abstract
Farmland shelter forest plays an important role in protecting the northwest windy and sandy areas and provides a good growth environment for crops.To understand the spatial distribution characteristics of farmland shelterbelt,it is necessary to extract the shelter forest effectively.It is an important way to extract the farmland shelter forest by using the medium and low-resolution remote sensing data.In this study,farmland shelterbelt in Qingtongxia City,Ningxia as the research object.In the 2019 image,seven periods of Landsat8 OLI image data which can represent the characteristics of four quarters were selected to reconstruct the time series curve.On the basis of image preprocessing,water body index,vegetation characteristics and vegetation index were integrated,the phenological characteristics of vegetation were extracted,and other features in the study area were removed by mask,in order to achieve the extraction of farmland shelterbelt.At the same time,the accuracy of the extraction results is evaluated by using the field survey results and land use data.The results showed that,the overall accuracy of shelter forest extractionwas 85.16％,and 44 out of 50 sampling sites were accurately extracted with 88.00％ accuracy.Farmland shelterbelts in Qingtongxia City are mostly presented in the form of forest belts,which are mainly distributed along drainage ditches.关键词
多时序遥感影像/青铜峡市/物候特征/农田防护林/Landsat8 OLIKey words
multi-temporal remote sensing images/Qingtongxia City/phenological characteristics/field safeguarding forest/Landsat8 OLI引用本文复制引用
张嘉敏,何俊,高富东,李敏,孙兆军,李茜,楠菲山..基于Landsat8时间序列的宁夏青铜峡市农田防护林提取[J].黑龙江农业科学,2024,(1):23-28,6.基金项目
国家重点研发计划课题(2021YFC3201205) （2021YFC3201205）
宁夏重点研发计划项目(2021BBF02001,2021BBF02012,2022BBF02026). （2021BBF02001,2021BBF02012,2022BBF02026）
