摘要
对杉木林林分改造树种山杜英、樟树、黎蒴、红锥和火力楠形成的5种纯林的土壤理化性质、凋落物储量和养分进行研究,结果表明山杜英、樟树、藜蒴、红椎和火力楠的土壤容重分别为1.30、1.19、1.24、1.29和1.16·gcm^(-3),山杜英和红椎的土壤容重显著大于樟树和火力楠,土壤毛管持水量、总孔隙度、毛管孔隙度、非毛管孔隙度和通气孔隙度相反。5种林地的土壤p H值在4.3~5.1范围,属强酸性土壤。山杜英和樟树林的土壤有机质和全氮含量较高,火力楠中等,藜蒴和红椎较低,土壤全磷含量排序为火力楠>樟树>藜蒴>红椎>山杜英,土壤全钾含量为红椎>山杜英>樟树>火力楠>藜蒴。土壤碱解氮含量为樟树>火力楠>山杜英=藜蒴>红椎,土壤有效磷含量为红椎>樟树>山杜英=藜蒴=火力楠,土壤速效钾含量为樟树>火力楠>藜蒴>红椎>山杜英。
Soil characteristics of Elaeocarpus sylvestris , Cinnamomum camphora, Castanopsis fissa, Castanopsis hystrix and Michelia macclurei stands were studied. The results showed that the soil bulk density of E. sylvestris and C. hystrix was significantly greater than that of C. camphora and M. macclurei,whereas their soil capillary water holding capacity, total porosity, capillary porosity, non-capillary porosity and aeration porosity were smaller than the former two. The pH value of soils under the five stands ranged from 4.3 to 5.1, belonging to strong acid soils. Soil organic matter and total N contents of were high in E. sylvestris and C camphora soils, medium in M. macclurei soil and low in C. fissa and C. hystrix soils. Total P content decreased in the order ofM. macclurei 〉 C. fissa 〉 C. hystrix 〉 E. sylvestris,Total K content decreased in the order of C. hystrix 〉 E. sylvestris 〉 C. camphora 〉 M. macclurei 〉 C. fissa. Availiable N,P and K contents decreased in the order of C. camphora 〉 M. macclurei 〉 E. sylvestris = C. fissa 〉 C. hystrix, C. hystrix 〉 C. camphora 〉 E. sylvestris = C. fissa = M. macclurei and C. camphora 〉 M. macclurei 〉 C. fissa 〉 C. hystrix 〉 E. sylvestris, respectively.
作者
白昆立
Bai Kunli(Qujiang National Forest Farm of Shaoguan City, Shaoguan Guangdong 512000)
出处
《热带林业》
2016年第4期31-34,共4页
Tropical Forestry
基金
中央财政林业科技推广示范项目:广东省生态公益林培育技术推广[2015]GDTK-07号资助
关键词
杉木
阔叶林
林分改造
土壤物理化性质
土壤养分
Cunninghamia lanceolata, Broadleaved, Forest reconstruction, Soil physical property, Ssoil nutrient
