川西山地天然林破坏分布及信息特征  

Distribution Characteristics of the Natural Forest's Damage Information in Western Sichuan Based on QucikBird Data

作　　者：赖家明[1] 李洁 岳明娣 曾凡明 LAI Jiaming;LI Jie;YUE Mingdi;ZENG Fanming(College of Forestry,Sichuan Agricultural University Chengdu 611130,China;Sichuan Provincial Forestry Station General Chengdu 610081,China)

机构地区：[1]四川农业大学林学院,成都611130 [2]四川省林业工作总站,成都610081

出　　处：《四川农业大学学报》2022年第1期83-89,共7页Journal of Sichuan Agricultural University

基　　金：世界银行贷款长江流域上游森林生态系统恢复项目(LOAN NUMBER 9028-CN)。

摘　　要：【目的】为川西林区天然林资源的可持续经营提供基础数据和理论参考。【方法】以Qucikbird影像为基础数据,基于eCongnition 8.64遥感图像处理程序,采用面向对象的多尺度分割方法,建立分类识别规则集,提取了天然林的各种破坏信息,利用GIS技术分析其分布特征。【结果】①天然林破坏类型主要有滑坡破坏、农牧破坏、雪圧损毁和风倒损毁;提取滑坡面积6.53 hm^(2),农牧面积60.34 hm^(2),雪压损毁乔木33株,风倒损毁乔木29株。②滑坡破坏主要分布在沟谷密度大于7 km/km^(2)、坡度大于50°且距离道路在100 m以内的裸地区域;农牧破坏主要分布在坡度20°以内,且与居民地距离在100~500 m之间的草地区域;风损破坏主要分布在高程为3500~3800 m区间,且郁闭度小于0.5的西北坡有林地区域;雪损破坏主要分布在高程3500 m以上、坡向为北坡且树种为云杉或冷杉的区域。【结论】研究表明,基于高分辨率遥感影像进行天然林破坏信息的提取在技术上是可行的。【Objective】It provides basic data and theoretical reference for the sustainable management of natural forest resources in Western Sichuan forest area.【Method】Set the QuickBird image as the basic data,this paper uses the object-oriented multi-scale segmentation method to establish the classification recognition rule set and extract the various damage information of the natural forest based on the Congnition 8.64 remote sensing image processing program,and the distribution characteristics of the damage information are analyzed by the GIS technology.【Result】①the main types of natural forest's damages in the research area are geological landslides,agricultural and animal husbandry damage,snow damage and wind damage.The areas of geological landslides and farming and animal husbandry damage are 6.53 hm^(2) and 60.34 hm^(2),33 trees are damaged by snow and 29 trees are destroyed by wind;②the damage of landslide is most possibly to happen in the bare land,where the slope is bigger than 50°,the density of gully is bigger than 7 km/km^(2) and the distance is less than 100m away from the road.Grassland area,where the slope is within 20°and the distance is between 500 m and 1000 m away from the habita⁃tions,has the damage of farming and animal husbandry most clearly.The wind damageis most likely to happen in the forest area,where the elevation is from 3500 m to 3800 m of the northwestern slope and the crown density is less than 0.5.The region where the elevation is more than 3500 m in the northern slope and tree species is piceaasperata or Abies fabriis most likely to have the snow damage.【Conclusion】Besides,the research shows that it is technically feasible to extract the natural forest's dam⁃age information based on the high resolution remote sensing images.

关 键 词：破坏信息 天然林 多尺度分割 Qucik Bird数据 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]