| 不同竹林地氮磷径流流失特征研究 |
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| 引用本文： | 陈晓冰,王克勤. 不同竹林地氮磷径流流失特征研究[J]. 林业资源管理, 2012, 0(6): 105-111 |
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| 作者姓名： | 陈晓冰 王克勤 |
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| 作者单位： | 西南林业大学环境科学与工程学院,昆明,650224 |
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| 基金项目： | 西南林业大学科技创新项目 |
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| 摘 要： | 对昆明西山的灰金竹林、慈竹林、实心竹林3种典型竹林地进行野外模拟降雨实验,研究不同竹林地下土壤表层N和P随降雨径流的迁移过程。结果表明:在相同降雨条件下,3种竹林地产流量、产沙量大小顺序均为慈竹林>灰金竹林>实心竹林;径流水相中悬浮颗粒态氮(PN)和悬浮颗粒态磷(PP)是氮、磷流失的最主要形态。整个降雨过程氮素流失以径流水相为主,而磷素流失以泥沙相为主;土壤表层氮、磷流失速率大小顺序均为慈竹林>灰金竹林>实心竹林,土壤浅层水源涵养功能最强的为实心竹林。
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| 关 键 词： | 竹林 模拟降雨 径流 氮磷流失 |
Characteristics Study of Nitrogen and Phosphorus Runoff Loss in Different Bamboo Forests |
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| CHEN Xiaobing , WANG Keqin. Characteristics Study of Nitrogen and Phosphorus Runoff Loss in Different Bamboo Forests[J]. Forest Resources Management, 2012, 0(6): 105-111 |
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| Authors: | CHEN Xiaobing WANG Keqin |
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| Affiliation: | (College of Environmental Science and Engineering,Southwest Forestry University,Kunming 650224,China) |
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| Abstract: | Three typical types of bamboo forests with Phyllostachys sulphurea,Neosinocalamus affinis(Rendle)Keng f and Fargesia fractiflexa Yi in West Mountain of Kunming were used to study nitrogen and phosphorus loss of surface soil in artificial rain-runoff simulator.The results showed that the amount of runoff and sediment followed the order as Neosinocalamus affinis(Rendle)Keng f > Phyllostachys sulphurea> Fargesia fractiflexa Yi under the same rainfall condition.The main form of nitrogen and phosphorus loss were suspended particulate nitrogen(PN)and suspended particulate phosphorus(PP)in runoff water.Nitrogen loss occurred mainly in runoff water and phosphorus loss in sediment in the whole rainfall process.The rate of nitrogen and phosphorus loss followed the order as Neosinocalamus affinis(Rendle)Keng f > Phyllostachys sulphurea> Fargesia fractiflexa Yi from surface soil.The highest water conservation fuction was Fargesia fractiflexa Yi. |
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| Keywords: | bamboo forests simulation rainfall runoff nitrogen and phosphorus loss |
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