摘要
在加勒比松林纯林的株间和行间插种黧蒴锥、大叶相思、桂木和油茶(G_1),以及插种荷木、光叶山矾、竹节树和油茶(G_2),研究这2种改造模式下阔叶树种叶片的养分和光合特性。结果表明:在G_1阔叶树种中,大叶相思和桂木的叶片氮、磷、钾含量高,而G_2中竹节树叶片的氮、磷、钾含量均最高;G_1阔叶树种的净光合速率、植物气孔导度、胞间二氧化碳浓度及植物蒸腾速率均表现为大叶相思>桂木>黧蒴锥>油茶,而在G_2中表现为荷木>油茶>竹节树>光叶山矾。因此,大叶相思、桂木和荷木是本试验中优良的林分改造树种。
Castanopsis fissa,Acacia auriculiformis,Artocarpus nitidus subsp.lingnanensis and Camellia oleifera were planted among rows and lines in one part of pure Pinus caribaea stand(G!),Schima superba,Symplocos lan-cifolia,Carallia brachiata and Camellia oleifera were planted in another part of the pure Pinus caribaea stand(G2).The nutrient and photosynthetic characteristics of broad-leaved tree species in these 2 remodeling modes were studied.Results showed that N,P,K concentrations in leaves of Acacia auriculiformis and Artocarpus nitidus subsp.lingnanensis at G1 plot were high and the same as leaves of Carallia brachiata among at G2 plot.Net photosynthetic rate,stomatal conductance,intercellular C〇2 concentration and transpiration rate decreased in the order of Acacia auriculiformis>Artocarpus nitidus subsp.lingnanensis>Castanopsis fissa>Camellia oleifera at G1 plot,and in the order of Schima superba>Camellia oleifera>Carallia brachiata>Symplocos lancifolia at G2 plot.The above results indicated that Acacia auriculiformis,Artocarpus nitidus subsp.lingnanensis and Schima superba were excellent tree species for stand transformation.
作者
方怡然
蔡金桓
李洁
薛立
Fang Yiran;Cai Jinhuan;Li Jie;Xue Li(College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou Guangdong 510642,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2018年第2期30-36,共7页
Journal of Southwest Forestry University：Natural Sciences
基金
广东省林业厅项目(粤财农2015-159号)资助
关键词
加勒比松
纯林
混交改造
叶片
养分
光合特性
Pinus caribaea
pure plantation
transformation of mixed plantation
leaf
nutrients
photosynthetic characteristics
