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| 近天然落叶松云冷杉林土壤养分特征 | |
| 引用本文： | 王海燕,雷相东,张会儒,赵雪梅,杨平.近天然落叶松云冷杉林土壤养分特征[J].东北林业大学学报,2009,37(11). |
| 作者姓名： | 王海燕 雷相东 张会儒 赵雪梅 杨平 |
| 作者单位： | 1. 教育部水土保持与荒漠化防治重点实验室(北京林业大学),北京,100083 2. 中国林业科学研究院资源信息研究所 3. 北京林业大学 |
| 基金项目： | 国家"十一五"科技支撑计划项目 |
| 摘 要： | 研究了吉林省汪清林业局近天然落叶松云冷杉林不同土层(0＜土壤深度h≤20cm、20cm＜h≤40cm和40cm＜h≤60cm)的土壤养分状况及间伐强度对其的影响.结果表明:研究区0＜h≤20cm土层的土壤养分含量丰富.随着土壤深度的增加,土壤养分质量分数降低,在不同土层间差异均达极显著水平(P<0.01);在垂直剖面上,土壤养分变异系数均有不同程度的差异,其中0＜h≤20cm土层土壤有效P质量分数的变异系数最大,达到79.0%;土壤有机质、全N、碱解N的表聚系数较大,而全P、全K和速效K的表聚系数较小;不同间伐强度下,土壤养分的表聚系数也存在差异,且以中度间伐的表聚系数最大,说明40%以下的间伐强度,20a后没有引起土壤养分质量分数的显著变化,可见,间伐对土壤养分的长期效应不显著. |
| 关 键 词： | 落叶松云冷杉混交林 土壤养分 异质性 表聚系数 间伐 |
Soil Nutrient Characteristics of Semi-natural Mixed Larch-spruce-fir Stands in Northeast China |
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| Wang Haiyan,Lei Xiangdong,Zhang Huiru,Zhao Xuemei,Yang Ping.Soil Nutrient Characteristics of Semi-natural Mixed Larch-spruce-fir Stands in Northeast China[J].Journal of Northeast Forestry University,2009,37(11). | |
| Authors: | Wang Haiyan Lei Xiangdong Zhang Huiru Zhao Xuemei Yang Ping |
| Institution: | Wang Haiyan(Key Laboratory of Soil , Water Conservation , Desertification Combating,Ministry of Education(Beijing Forestry University),Beijing 100083,P.R.China),Lei Xiangdong,Zhang Huiru(Institute of Forest Resource Information Techniques,Chinese Academy of Forestry),Zhao Xuemei,Yang Ping(Beijing Forestry University) |
| Abstract: | Semi-natural mixed larch-spruce-fir stands in Northeast China were selected for field experiment to study soil nutrients in the layers of 0~20,20~40 and 40~60cm and thinning effects.Results showed that soil nutrients were rich in the layer of 0~20cm.Soil nutrient concentrations decreased with increasing soil depth,and very significant differences(p<0.01) were found between different soil layers.Coefficients of variation(CV) of soil nutrients varied in the soil profile,with the highest CV for soil available ... |
| Keywords: | Semi-natural mixed larch-spruce-fir stands Soil nutrients Nutrient heterogeneity Accumulation coefficients Thinning |
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