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Position: Home > Articles > Seasonal Dynamics of Soil Phosphorus for Main Forest Types in Liangshui Nature Reserve and Its Availability Journal of Northeast Forestry University 2010,38 (4) 64-67

凉水自然保护区主要森林类型土壤磷季节动态及有效性

作  者:
刘宏伟;陈立新;马海娟;乔璐;张杰
单  位:
东北林业大学
关键词:
凉水自然保护区;森林类型;土壤磷;有效性
摘  要:
以凉水自然保护区落叶松人工林、红松人工林、椴树红松林、枫桦红松林和白桦天然次生林5种林型为对象,研究了土壤全磷和有效磷季节变化、空间分布及土壤理化性质对土壤磷有效性的影响。结果表明:不同林型各层土壤全磷和有效磷质量分数随季节变化的趋势基本一致,均为生长季(6月—8月)低于春(5月)、秋(9月)两季,有效磷质量分数在8月份有所回升,全磷从9月才开始回升。有效磷质量分数季节波动幅度大于全磷。土壤全氮、有机质与全磷质量分数呈显著正相关,田间持水量、饱和持水量和毛管持水量与土壤有效磷质量分数呈显著负相关。对土壤全磷质量分数的作用大小表现为饱和持水量>毛管持水量>毛管孔隙度。
译  名:
Seasonal Dynamics of Soil Phosphorus for Main Forest Types in Liangshui Nature Reserve and Its Availability
作  者:
Liu Hongwei, Chen Lixin, Ma Haijuan, Qiao Lu, Zhang Jie(School of Forestry, Northeast Forestry University, Harbin 150040, P . R. China)
关键词:
Liangshui national nature reserve; Forest stands; Soil phosphorus; Availability
摘  要:
Five forest stands, larch plantation, Korean pine plantation, mixed forest of Korean pine and linden, mixed forest of Korean pine and white birch, and natural secondary white birch forest, in Liangshui National Nature Reserve were selected to study the seasonal dynamics and spatial distribution of total phosphorus and available phosphorus in soil as well as the effect of soil physical and chemical properties on phosphorus. Results indicated that the patterns of seasonal change in total phosphorus content and available phosphorus content in soil were basically the same between different soil layers for five chosen forest stands. The contents of total phosphorus and available phosphorus were both lower during growing season (from June to August) than that in spring (May) and autumn (September). The available phosphorus content started to increase again from August, so did the total phosphorus from September. The seasonal fluctuation of available phosphorus content was larger than that of total phosphorus. There were significant positive correlations between total phosphorus and total nitrogen and organic matter in soil and significantly negative correlations between available phosphorus content and field capacity, saturated water capacity, capillary water capacity. The influential extent of the affecting factors to total phosphorus content in soil in a decreasing order was saturated water capacity, capillary water capacity, and capillary porosity.

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