摘要
粤北南岭山区是华南地区重要的生态屏障和水源涵养区。其在南雄市特有的红砂岭地貌,在自然条件和人为活动的影响下生态风险日渐凸显。探索红砂岭生态环境的修复监测,对粤北山区的生态保护有着重要意义。文章结合无人机高分航拍影像,基于U-Net卷积神经网络模型解译生态要素,并参照2017年遥感影像进行历史变化分析,对研究区域的红砂岭地貌生态修复现状进行监测。结果表明:(1)草地是和红砂岭地貌共存的典型生态要素类型,灌乔木的生长条件要求较高,难以在红砂岭地貌近距离生存;(2)当前是研究区的生态修复改造的初期,生态修复的初步成效已经展现。在后续的工作中,需针对砂岭地貌周边植被生长情况,实施综合治理措施。
Nanling mountain area of northern Guangdong province is an important ecological shelter and water conservation area.The unique landform of red-sand ridges in Nanxiong county,under natural and anthropogenic disturbances,its ecological risks are increasingly prominent.And the monitoring of ecological restoration of red-sand ridges is of great significance for the ecological protection in mountainous areas in northern Guangdong province.This paper,using high-resolution aerial images taken by an Unmanned Aerial Vehicle(UAV),interpreted ecological elements based on U-Net convolutional neural network model.We analyzed historical changes based on satellite images obtained in 2017 and monitor the aforementioned ecological restoration.The results indicated:①grass is a typical ecological element coexisting with the red-sand landform.Compared with grass,forests need a better ecological environment.The closer to red-sand landforms,the harder it is for forests to survive,and vice versa;②the current ecological restoration in the study area is in the early stage,but its positive effect has been observed in this study.In subsequent work,it is necessary to implement comprehensive treatment measures according to the surrounding vegetation situation in red-sand landforms.
作者
蔡世荣
陈行
余世钦
符加方
徐国良
杨现坤
CAI Shi-rong;CHEN Hang;YU Shi-qin;FU Jia-fang;XU Guo-liang;YANG Xian-kun(School of Geography and Remote Sensing,Guangzhou University,Guangzhou 510006,China;Rural Non-Point Source Pollution Comprehensive Management Technology Center of Guangdong Province,Guangzhou University,Guangzhou 510006,China;Nanxiong County Natural Resources Bureau,Shaoguan 512400,China)
出处
《广州大学学报（自然科学版）》
CAS
2023年第2期87-94,共8页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金资助项目(41871017)
南雄市红砂岭综合治理工程监测分析与评价资助项目(ZPSG2020ZB010,ZPSG2020ZB045)。
关键词
红砂岭
生态修复
无人机
U-Net
南雄市
red-sand ridge
ecological restoration
UAV
U-Net
Nanxiong county
