东莞市生态景观林林分改造效果研究
Research on Effect of Stand Restructuring of Ecological Landscape Forest in Dongguan, South China
徐庆华 1胡廉隆1
作者信息
- 1. 广东省东莞市大岭山森林公园管理处 广东东莞523725
- 折叠
摘要
对广东省东莞市大岭山森林公园低效相思类林分进行改造,4.5a生时采用样方法进行林分生态效益和景观效益的调查.结果表明:(1)选用的红锥、樟树、山苍子等几个树种生长表现最好,高、径生长都较快,其中红锥、樟树的表现尤其优秀；(2)改造后的林分草本层物种达到了3.8 ～9.4种,平均为6.33种；多样性指数为0.80 ～1.92,平均为1.39；均匀度指数为0.61 ～0.87,平均为0.77；生态优势度0.30 ～0.58,平均为0.35,林分整体生物多样性较好；(3)林地表层土壤(0～25 cm)疏松,持水能力较强.林分最大持水深15 mm,其中林地土壤占98.24％.(4)在相思林下用2年生苗木进行套种改造,采用较高的造林措施,可以在2～3年内形成景观效果,林分复层林冠基本成型,林相有初步的季节变化.
Abstract
Reestabilement experimient was carride out in Acacia stand of Da Ling Shan Forest Park, Dong-guan . Sampling methods was used for forest ecological and landscape benefits investigation after 4. 5 years. The re-sults showed that: (1) Castanopsis hystrix, Cinnamomum camphora and Litsea cubeba have best growth performance of several tree species in height and diameter. Castanopsis hystrix and Cinnamomum camphora are espically suitable for extend in south area of China; (2) The forest sub-species of herbaceous layer reached 3.8 to 9.4 species, with average of 6. 33 species; diversity index was 0. 80 to 1.92, average of 1. 39; uniformity index was 0. 61 to 0. 87 , average of 0.77; Ecological dominance was from 0. 30 to 0. 58, with average of 0. 35, which indicated that the stand have good overall biological diversity; (3 ) Forest surface soil (0 ～ 25 cm) are loose, the water-holding ca-pacity is high with maximum of 15 mm, which accounted for 98. 24% forest soil; (4) Using 2 years old seedlings to reestabilshed the Acacia stand, a appreciatable forest landscape can be formed in 2 to 3 years only with high af-forestation measure, stratified forest crown and seasonal variation are preliminary appear.
关键词
林分改造/造林树种/林下植被/物种多样性/土壤持水能力/景观Key words
stand restructuring/tree species/understorey/species diversity/soil water holding/forest landscape引用本文复制引用
出版年
2011
NETL
NSTL
维普
万方数据