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不同密度下近天然落叶松云冷杉林各土层土壤理化特征
引用本文:王岳, 王海燕, 李旭, 杨晓娟, 刘玲, 李卫松. 不同密度下近天然落叶松云冷杉林各土层土壤理化特征[J]. 草业科学, 2014, 8(8): 1424-1429. DOI: 10.11829/j.issn.1001-0629.2013-0580
作者姓名:王岳  王海燕  李旭  杨晓娟  刘玲  李卫松
作者单位:1.北京林业大学林学院, 北京 100083
摘    要:
本研究以8块不同林分密度近天然落叶松云冷杉林为对象, 研究不同林分下密度对不同土层土壤的理化特征。结果表明, 相同林分密度条件下, 土壤物理性质随土层深度增加呈显著变化(P0.05);除全氮外, 其他养分元素浓度差异不显著(P0.05)。不同密度条件下的土壤养分浓度并未表现出明显的变化规律, 也没有在某一密度之后出现明显的下降现象。林分密度为1 058株·hm-2时, 虽然土壤养分浓度有所降低, 但总体差异并不显著。这说明在试验区目前林分密度下, 土壤养分状况并未受影响, 可适当补植, 增加林地的利用效率。

关 键 词:近天然落叶松云冷杉林  土壤养分  林分密度
收稿时间:2013-10-17

Soil physical and chemical characteristics of different depths in semi-natural mixed larch-spruce-fir at different stand densities
Yue WANG, Hai-yan WANG, Xu LI, Xiao-juan YANG, Ling LIU, Wei-song LI. Soil physical and chemical characteristics of different depths in semi-natural mixed larch-spruce-fir at different stand densities[J]. Pratacultural Science, 2014, 8(8): 1424-1429. DOI: 10.11829/j.issn.1001-0629.2013-0580
Authors:Yue WANG  Hai-yan WANG  Xu LI  Xiao-juan YANG  Ling LIU  Wei-song LI
Affiliation:1.College of Forestry, Beijing Forestry University, Beijing 100083, China
Abstract:
Effects of stand density on soil physical and chemical properties were studied in eight semi-natural mixed larch-spruce-fir stands. The results showed that soil physical properties were significantly different at different soil depth in the same stand density. Except with soil total nitrogen, there was no significant difference for other nutrient concentrations between soil depths. Soil nutrient concentrations did not have significant change rule at different stand densities and declining trend in a certain density. At the density of 1 058 trees·hm-2, soil nutrient concentrations decreased but without significant difference which showed that soil nutrients were not affected by current stand densities in the experimental area. Replanting may be appropriate to increase the use efficiency of forestland.
Keywords:semi-natural mixed larch-spruce-fir stands  soil nutrient  stand density
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