文献类型：期刊文献

中文题名：海南东北部4种典型人工林土壤化学性质研究

英文题名：Comparisons of soil chemical properties under four typical forest stands in northeast Hainan

作者：薛杨[1] 陈毅青[1] 刘宪钊[2] 王小燕[1] 林之盼[1]

第一作者：薛杨

机构：[1]海南省林业科学研究所;[2]中国林业科学研究院资源信息所

年份：2014

卷号：0

期号：6

起止页码：1142-1146

中文期刊名：生态科学

外文期刊名：Ecological Science

收录：北大核心:【北大核心2011】；CSCD:【CSCD_E2013_2014】；

基金：海南省科学事业费项目"文昌航天城缓冲区域生态本底调查研究(KYYS-2013-39)";院所长基金"热带木麻黄海防林近自然更新正相互作用机理"(CAFYBB2014QB044)

语种：中文

中文关键词：人工林;森林土壤;土壤化学性质;土壤养分

外文关键词：plantation; forest soil; soil chemical properties; soil fertility

分类号：S76

摘要：选取大叶相思、木麻黄、桉树和湿加松四个海南东北部沿海平原地带典型的人工林树种进行土壤取样和分析,研究土壤p H值、有机质、全氮、碱解氮、全磷、速效磷、全钾和速效钾以及有机碳和全氮的比值(C/N比)在四种类型林分中的差异,同时对不同深度的土壤养分进行比较分析。结果显示该区森林土壤呈强酸性,土壤有机质含量低、土壤碱解氮、有效磷和速效钾均处于中度到中度贫瘠的水平。由于小枝单宁含量高,阻碍木麻黄凋落物分解和养分归还进行,除有效磷外,其它土壤养分元素含量均低于另外三种类型人工林,过熟阶段的桉树林的有机质、全氮、C/N比高于其他三种林分。除了桉树林土壤C/N比外,土壤养分含量随土层深度增加总体上表现为不断减少的趋势,最后本研究给出提高土壤质量的一些经营建议。
Soil samples were collected from Acacia auriculiformis, Casuarina equisetifolia, Eucalyptus and Pinus elliottii x Pinus oaribaea stands in the northeast of Hainan Province, for analyzing soil chemical properties including soil pH, organic matter, total and available N, P and K, as well as the ratio of soil organic carbon and total N. The effects of soil layers and forest types on soil chemical properties were compared. Results showed that forest soils in the area were strong acidic, with slight or moderate deficiency of organic matter, available N, P and K. Due to the high tannin content of C. equisetifolia, the ranches and leaves of decomposed slowly, which decreased the speed of nutrient return. The nutrient content of C. equisetifolia was lower than other three type of stands （except available P）. The organic matter, total N and C/N of over mature Eucalyptus were much higher than other three tree species stand. Soil nutrient decreased following the increase of soil depth （except for C/N value in Eucalyptus stand）. Some suggestions on forest management were also proposed to improve forest soil quality.