毕节林地景观格局时空变化特征分析  

Analysis of Spatiotemporal Changes in Forest Landscape Pattern in Bijie

作　　者：任金铜 简进 陈红燕 REN Jin-tong;JIAN Jin;CHEN Hong-yan(School of Ecological Engineering,Guizhou University of Engineering Science;Forestry Survey,Planning and Design Institute in Bijie;Natural Forest Resources Protection Center of Bijie Forestry Bureau,Bijie,Guizhou551700,China)

机构地区：[1]贵州工程应用技术学院生态工程学院 [2]贵州省毕节市林业调查规划设计院 [3]毕节市林业局天然林资源保护中心,贵州毕节551700

出　　处：《贵州工程应用技术学院学报》2024年第3期68-73,共6页Journal of Guizhou University Of Engineering Science

基　　金：贵州省典型高原湿地生态保护与修复重点实验室项目,项目编号:黔科合平台人才[2020]2002;智慧地理空间信息应用工程中心项目,项目编号:毕科联合[2023]8号;喀斯特高原资源与环境遥感人才团队,项目编号:毕委人领通[2023]14号。

摘　　要：掌握林地景观格局时空变化特征,对于以林为主的山水林田湖草沙规划具有重要意义。基于遥感影像解译获取贵州省毕节市1990—2020年4期林地景观数据,对研究区林地景观格局演变特征及其规律进行分析。结果表明:近30年来,毕节林地景观面积及景观格局均发生了较大变化,林地景观受人为因素和政策影响较大,林地景观面积总体呈减少趋势,但林地景观的质量持续增加。从林地二级地类来看,毕节灌木林地面积占比最大、总体呈减少趋势,有林地、疏林地和其他林地面积总体增加,林地主要转为耕地、草地。毕节林地景观破碎化程度有少量增加,景观异质性逐渐增大,不同景观斑块在空间上趋于离散,反映出近30年来毕节林地受人类活动干扰较为严重。Mastering the spatiotemporal changes in forest landscape patterns is of great significance for the planning of mountains,rivers,forests,fields,lakes,grasslands,and sands,which are mainly dominated by forests.Based on remote sensing images interpretation,we obtain four periods of forest landscape data in Bijie,Guizhou province from 1990 to 2020,and analyze the characteristics and laws of forest landscape pattern evolution in the study area.The results indicated that:In the past 30 years,the forest landscape area and pattern in Bijie had undergone significant changes.The forest landscape was greatly influenced by human activities and policies,and the overall forest landscape area showed a decreasing trend,but the quality of the forest landscape continued to increase.From the perspective of secondary land types of forest land,the proportion of shrub forest land in Bijie was the largest,and the overall trend was decreasing.There as an overall increase in the area of forest land,sparse forest land,and other forest land,with forest land mainly turning into farmland and grassland.The degree of fragmentation of the Bijie forest landscape has slightly increased,and the heterogeneity of the landscape had gradually increased.Different landscape patches tended to disperse in space,reflecting that the Bijie forest had been severely disturbed by human activities in the past 30 years.

关 键 词：林地 景观格局 景观异质性 时空变化 

分 类 号：S718.5[农业科学—林学]