基于林班尺度的森林立地类型划分与质量评价  

Classification and Quality Evaluation of Forest Site Types by Using Compartments as the Research Scale

作　　者：卢立华[1,2] 冯益明 农友[1,2] 李华[1,2] 农良书 孙冬婧[1,2] 黄德卫 明安刚[1,2] LU Lihua;FENG Yiming;NONG You;LI Hua;NONG Liangshu;SUN Dongjing;HUANG Dewei;MING Angang(Experimental Center of Tropical Forestry,Chinese Academy of Forestry,Pingxiang 532500,Guangxi,China;Guangxi Youyiguan Forest Ecosystem Research Station,Pingxiang 532500,Guangxi,China;Institute of Desertification Studies,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院热带林业实验中心,广西凭祥532600 [2]广西友谊关森林生态系统国家定位观测研究站,广西凭祥532600 [3]中国林业科学研究院荒漠化研究所,北京100091

出　　处：《林业资源管理》2018年第2期48-57,共10页Forest Resources Management

基　　金：中央级公益性科研院所基本科研业务费专项(CAFYBB2012001)

摘　　要：在广西凭祥中国林业科学研究院热带林业实验中心哨平实验场,以林班为单元,按7hm^2/块密度布设样地调查获取立地因子与林木生长信息,以主成分分析确定立地类型划分主导因子,依据六级分类系统及利用ArcGIS分析叠加技术得到立地类型及图表,综合评价立地质量。结果表明:1)研究区划分2个立地类型小区,3个立地类型组,88个立地类型,其中:立地质量Ⅰ级为零;Ⅱ,Ⅲ,Ⅳ,Ⅴ级立地类型数、面积及占总面积百分数依次为4个,48.87hm^2,1.44%;11个,106.42hm^2,3.14%;52个,2 799.21 hm^2,82.65%;19个,432.36hm^2,12.77%。2)立地质量中等及以上立地类型15个,面积155.29hm^2,占4.58%;而较差或差达73个,3 231.57hm^2,占95.42%。Sampling plots with a density of 7 hm2/plot were distributed and set up based on the results of National Forest Resource Inventory in the Shaoping Experimental Station of Experimental Center of Tropical Forestry,Chinese Academy of Forestry in Guangxi,China. After previous site selection on the forest map,site investigations and plot setting were conducted for acquisition of site properties. the site types classification guiding factors were found out through the Principal Components Analysis method. According to the ＂Six-level classification system＂from ＂Forest site classification in China＂,the data from field study were overlaid in the Arc GIS software to obtain forest site types and related figures,and the site quality was evaluated through comprehensive evaluation method. Results showed that there were 88 site types which were included in 2 blocks and 3 groups in the study area,being pertained to 5 levels of site quality as follows Level I： none; Level II： 4 site types with total area of 48. 87 hm2,accounting for 1.44%; Level III： 11 site types with total area of 106. 42 hm2,accounting for 3. 14%; level IV： 52 site types with total area of 2799. 21 hm2,accounting for 82. 65%; and level V： 19 site types with total area of 432.36 hm2,accounting for12. 77%. There were 15 site types with the site quality level of middle or above,accounting for a total area of 155. 29 hm2 or 4. 58% in the whole study area,while the site type with the site quality level being low or lower was 73 with the area of 3 231. 57 hm2 accounting for 95. 42%.

关 键 词：林班尺度 立地类型划分 立地质量评价 地位指数 肥力指标 

分 类 号：S724[农业科学—林木遗传育种]