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Influence of different managing targets on soil nutrient pools of Phyllostachy edulis forests in hilly region, central Hunan
Author(s): 
Pages: 584-588
Year: Issue:  5
Journal: Journal of Huazhong Agricultural University

Keyword:  毛竹土壤养分库经营目标综合指数湘中;
Abstract: 以湘中丘陵区毛竹笋用林(Ⅰ)、笋材兼用林(Ⅱ)、材用林(Ⅲ)为研究对象,考察不同经营目标对毛竹林的土壤养分特征、养分库综合指数以及养分相关关系的影响.结果表明:毛竹笋用林、笋材兼用林、材用林0~60 cm土层土壤有机质、全氮、水解氮、全磷、有效磷、全钾和速效钾含量随着土层下降总体呈降低趋势,变化范围分别为18.88~40.24 g/kg、1.08~2.19 g/kg、60.00~200.00 mg/kg、0.36~0.52 g/kg、0.84~4.07mg/kg、11.29~23.46 g/kg和31.72~86.70mg/kg.毛竹笋用林土壤有机质、全氮及速效钾含量较高,笋材兼用林水解氮、全磷及有效磷含量较高,毛竹材用林土壤全钾较丰富.土壤养分库综合指数以毛竹笋材兼用林最高,笋用林次之,材用林最低,分别为3.9081、3.5228和3.2650;湘中丘陵区毛竹林土壤有机质、全氮、水解氮比较丰富,而土壤普遍缺乏磷素、钾素.土壤有机质与全氮、水解氮、全磷、有效磷和速效钾均呈显著正相关,全氮与水解氮、全磷与有效磷之间也存在显著正相关.
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