摘要
在苏北山丘区现存的6种典型次生林下设置8块测试样地,对各林分植被因子进行调查并对其林下土壤理化性质进行分析比较。结果表明,赤松(Pinus densiflora)林、黑松(Pinus thunbergii)林、侧柏(Platycladus orientalis)林以及刺槐(Robinia pseudoacacia)林多为纯林,是该山丘区主要的次生林类型;不同次生林下土壤平均硬度为(11.57±5.26)～(20.92±6.91)kg.cm-2;常绿针叶林下土壤容重、黏粒组成、田间持水量等指标均小于落叶阔叶林;常绿针叶林下土壤呈酸性,而落叶阔叶林下土壤呈弱碱性;刺槐林下土壤有机质、氮、磷等养分含量相对较高,供肥能力较强。
Eight sampling sites were selected out of the six types of secondary forest typical in the low mountain regions in North Jiangsu and vegetation composition of the woodlots was investigated and the soils therein were tested for comparision in physio-chemical properties. Results show that in these regions, Pinus densiflora forest, Pinus thunbergii forest, Platycladus orientalis forest, and Robinia pseudoacacia forest were the major types of secondary forest, quite simple in vegetation composition;Soil hardness varied from woodlot to woodlot, ranging from （11.57 ± 5.26） to （20.92 ± 6.91 ） kg·cm^-2;in bulk density, clay content, and field moisture holding capacity of soils under evergreen coniferous forests were lower than under deciduous broadleaf forests ; the formers displayed acidity, while the latters alkalescence; as to the soil nutrition, the soil under Robinia pseudoacacia forest was relatively good in hydrothermal condition, and high in soil organic matter, N and P content and in soil nutrient supplying capacity as well.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2007年第3期22-26,共5页
Journal of Ecology and Rural Environment
基金
国家重点基础研究发展规划项目(2002CB412401)
徐州师范大学科研基金资助项目(04XLB23)
关键词
次生林
土壤理化性质
苏北山丘区
苏北
secondary forest
soil property
low mountains and hills
North Jiangsu
