生态学杂志2024，Vol.43Issue(11)：3516-3525,10.DOI:10.13292/j.1000-4890.202411.019
农田防护林林网结构动态变化遥感评价
Evaluation of the dynamics of farmland shelterbelt network structure based on remote sensing
摘要
Abstract
Farmland shelterbelts are an important part of the Three-North Shelterbelt Project.Detecting changes in the network structure of farmland shelterbelts is crucial for assessing the project's construction and shelter effects.We proposed revised landscape index that considered the characteristics of farmland shelterbelts and remote sensing data to analyze the spatiotemporal variations in their network structure.Our evaluation method was applied to a typi-cal area of shelterbelt construction in the north of Changchun.The results showed that the revised landscape index calculation was simpler and more suitable for medium and low-resolution remote sensing data.By dividing the research area and calculating the difference in landscape index between real and ideal conditions,the spatiotempo-ral variations in the farmland shelterbelt network structure could be effectively evaluated from three aspects,inclu-ding the number of shelterbelts,their development status,and distribution.From 1985 to 2020,the structure of the shelterbelt network in the selected areas tended to be optimized,although closed-formed shelterbelt networks were less frequent and only about 14％of the shelterbelt networks graded as excellent in circularity degree.Our method provides a novel approach for evaluating the dynamics of shelterbelt network structure and can serve as a reference for the sustainable management of shelterbelts at the regional scale.关键词
农田防护林/林网结构/景观指数/遥感/时空动态变化Key words
farmland shelterbelt/shelterbelt network structure/landscape index/remote sensing/spatiotemporal variation引用本文复制引用
张兴,李杰玲,李颖,邓荣鑫,杨高,汤晶..农田防护林林网结构动态变化遥感评价[J].生态学杂志,2024,43(11):3516-3525,10.基金项目
国家自然科学基金面上项目(31971723)资助. （31971723）
