文献类型：期刊文献

中文题名：太湖上游西苕溪近岸森林土壤氮磷养分差异特征

英文题名：Research on Soil Nutrients of Forests Nearby Xitiaoxi River in the Upper Reaches of Taihu Lake Basin

作者：张灿强[1,2] 张彪[1] 杨艳刚[1] 王斌[3]

第一作者：张灿强

机构：[1]中国科学院地理科学与资源研究所;[2]中国科学院研究生院;[3]中国林业科学研究院亚热带林业研究所

年份：2011

卷号：25

期号：5

起止页码：53-58

中文期刊名：水土保持学报

外文期刊名：Journal of Soil and Water Conservation

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家水污染防治专项"太湖流域水生态功能分区与质量目标管理技术示范"(2008ZX07526-007)

语种：中文

中文关键词：森林;土壤养分;变异系数

外文关键词：forest; soil nutrient; variation coefficient

分类号：S714.8

摘要：近岸森林土壤受到河水涨落等自然侵蚀和人类活动的双重扰动,增加了土壤养分流失威胁,从而增大了下游河流和湖泊富营养化的风险,影响森林作为河岸缓冲带作用的发挥。对河岸森林土壤养分的研究,可为河岸森林树种的选取、河岸带建设、经营与管理等提供依据。以太湖上游的西苕溪两岸1km范围内的森林为研究对象,选择典型竹林、经济林、纯林和混交林样地34块,分层采集土壤样品,实验室测定有效磷、碱解氮、全氮和全磷等养分含量,利用变异系数分析不同森林类型和不同深度土层中养分含量的变异性,并且采用单因素方差分析和多重比较的方法分析土壤养分含量在不同森林类型间同一深度土层的差异性。结果表明,竹林土壤有效磷、碱解氮、全氮和全磷均具有较高的变异性,经济林土壤中的有效磷和全氮的变异较大,纯林和混交林土壤养分的变异性总体上较低;土壤有效磷、碱解氮和全氮平均含量在不同林型中都表现为0-10cm>10-30cm>30-50cm,即随着土层的加深养分含量降低;土壤有效磷含量竹林显著高于纯林,不同土层竹林与经济林的碱解氮含量显著高于纯林和混交林的;经济林的全氮含量较其他林型的较低,而全磷的含量却较高。
Forest ecosystem,especially forest soil,was disturbed increasingly by Human＇s management practices,such as fertilization,soil treatment and so on.Soil disturbance of riparian forest will increase the risk of nutrient loss causing eutrophication of river and lakes downstream and affect the role of forest as the riparian buffer zone.This study selected 34 typical plots of bamboo forest,economic forest,pure forest and mix forest within 1 km of the Xitiaoxi river in Taihu basin.Soil samples in different layers were determined the content of effective phosphorus,hydrolysis nitrogen,total nitrogen and total phosphorus.The variability of soil nutrient content in different forest and layers was analyzed using coefficient variation analysis and the differences of soil nutrient in the same layers of different forests was analyzed using one-way ANOVA and multiple comparison.Results showed that effective phosphorus,hydrolysis nitrogen and total nitrogen content of bamboo forest soil had high variability,and effective phosphorus and total nitrogen in economic forest varied greatly,whereas nutrient content of mixed and pure forest had a low variability in general.The average content of effective phosphorus,hydrolyzed nitrogen and total nitrogen in bamboo,economic,mixed and pure forests was ranked in descending order as follows： 0-10 cm,10-30 cm and 30-50 cm,that was with the deepening of soil nutrient content decreased.Effective phosphorus content in bamboo forest soil was significantly higher than pure forest.And the content of hydrolyzed nitrogen in bamboo and economic forest was significantly higher than that of pure and mixed forest.Economic forest soil had a lower total nitrogen,whereas had a higher phosphorus content.