广西国有钦廉林场乌家分场2009—2019年森林景观格局变化

Changes of Forest Landscape Pattern in Wujia Branch Farm of Guangxi State-owned Qinlian Forest Farm from 2009 to 2019

利用广西壮族自治区国有钦廉林场乌家分场2009和2019年森林资源调查数据库,采用GIS软件,对森林景观进行分类;计算景观格局指数,对森林景观格局进行分析和研究。结果表明,2009—2019年,占主导景观类型的均是有林地;景观斑块面积和数量发生变化,有林地、疏林地、无立木林地、荒山和苗圃地的斑块面积均减少,其他景观类型的斑块面积均增加;有林地、灌木林地、未成林地、无立木林地、宜林地、苗圃地和非林地的斑块数均增加,其他景观类型的斑块数均减少。宜林地和未成林地动态度变化较大。森林景观类型的比重差异性减小,各景观类型面积比重趋向均衡。

Using database of forest resources survey in 2009 and 2019 in Wujia branch farm of Guangxi stateowned Qinlian forest farm, forest landscapes were classified by using GIS software, and forest landscape patterns were analyzed and studied by calculating landscape indexes. Results showed that dominant landscape type was woodland from 2009 to 2019. Forest landscape patch areas and numbers have changed. Patch areas of woodlands, sparse woodlands, non-woodlands, barren hills and nursery lands all decreased, while patch areas of other landscape types all increased. Patch numbers of woodlands, shrub woodlands, immature woodlands,non-woodlands, suitable woodlands, nursery lands and non-forest lands all increased, while patch numbers of other landscape types decreased. Dynamic changes of suitable woodlands and immature woodlands were large.Proportion differentiation of forest landscape types decreased, and proportions of landscape areas tended to be balanced.