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集约经营雷竹林土壤磷素状况及流失潜能

陈闻 吴家森 许开平 姜培坤

陈闻, 吴家森, 许开平, 姜培坤. 集约经营雷竹林土壤磷素状况及流失潜能[J]. 浙江农林大学学报, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001
引用本文: 陈闻, 吴家森, 许开平, 姜培坤. 集约经营雷竹林土壤磷素状况及流失潜能[J]. 浙江农林大学学报, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001
CHEN Wen, WU Jia-sen, XU Kai-ping, JIANG Pei-kun. Soil phosphorus and potential loss in Phyllostachys praecox stands with intensive management[J]. Journal of Zhejiang A&F University, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001
Citation: CHEN Wen, WU Jia-sen, XU Kai-ping, JIANG Pei-kun. Soil phosphorus and potential loss in Phyllostachys praecox stands with intensive management[J]. Journal of Zhejiang A&F University, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001

集约经营雷竹林土壤磷素状况及流失潜能

doi: 10.11833/j.issn.2095-0756.2011.05.001
详细信息
    通信作者: 姜培坤

Soil phosphorus and potential loss in Phyllostachys praecox stands with intensive management

More Information
    Corresponding author: JIANG Pei-kun
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出版历程
  • 刊出日期:  2011-10-20

集约经营雷竹林土壤磷素状况及流失潜能

doi: 10.11833/j.issn.2095-0756.2011.05.001
    通信作者: 姜培坤

摘要: 为了解集约经营雷竹Phyllostachys praecox林土壤磷素状况及流失风险,从浙江省临安市太湖源镇10块典型的雷竹林地采集土壤样品。通过等温吸附实验及利用Langmuir等温方程,对雷竹林土壤磷的流失阈值及流失潜能进行了探讨。结果表明:10块雷竹林地的土壤有效磷质量分数平均为169.25 mgkg-1。 用Langmuir等温方程来拟合,相关性达到极显著水平(R2 = 0.987 ~ 0.999)。所有调查样地土壤的磷零点吸附平衡质量浓度(CEPC0)值远远超过了0.02 mgL-1;磷吸附饱和度(DPS)平均值为46.18%,最高的达82.94%,有7块样地的DPS值明显高出临界值(25.00%)。土壤有效磷与CaCl2-P呈极显著线性相关,雷竹林土壤发生磷素流失的有效磷阈值为52.52 mgkg-1,10块样地中有9块样地的有效磷质量分数超过了阈值,最高的达到该阈值的5.5倍。通过Langmuir方程,求得雷竹林土壤的标准需磷量为8.14 ~ 64.66 kghm-2,平均为27.41 kghm-2。图2表2参29

English Abstract

陈闻, 吴家森, 许开平, 姜培坤. 集约经营雷竹林土壤磷素状况及流失潜能[J]. 浙江农林大学学报, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001
引用本文: 陈闻, 吴家森, 许开平, 姜培坤. 集约经营雷竹林土壤磷素状况及流失潜能[J]. 浙江农林大学学报, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001
CHEN Wen, WU Jia-sen, XU Kai-ping, JIANG Pei-kun. Soil phosphorus and potential loss in Phyllostachys praecox stands with intensive management[J]. Journal of Zhejiang A&F University, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001
Citation: CHEN Wen, WU Jia-sen, XU Kai-ping, JIANG Pei-kun. Soil phosphorus and potential loss in Phyllostachys praecox stands with intensive management[J]. Journal of Zhejiang A&F University, 2011, 28(5): 687-693. doi: 10.11833/j.issn.2095-0756.2011.05.001

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