| 红壤坡地泡桐林地表径流和养分流失研究 |
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| 引用本文： | 李恩尧,彭佩钦,吴建平,侯红波.红壤坡地泡桐林地表径流和养分流失研究[J].湖南林业科技,2011,38(2):21-25. |
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| 作者姓名： | 李恩尧 彭佩钦 吴建平 侯红波 |
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| 作者单位： | 1. 中南林业科技大学环境科学与工程研究中心,湖南,长沙,410004
2. 湖南省林业科学院,湖南,长沙,410004 |
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| 基金项目： | 中南林业科技大学研究生科技创新基金资助项目，泡桐大径材速生丰产林养分定量控制关键技术研究与示范 |
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| 摘 要： | 在红壤坡地泡桐林地设置3个不同处理研究施肥对地表径流和养分流失的影响.试验结果表明:林下植被覆盖能有效的降低红壤坡地产流、产沙量以及氮、磷流失量;氮的流失主要以径流水溶性氮为主.磷的流失则是以泥沙携带为主;林地施肥增加了径流水溶性总氮、总磷浓度,而对泥沙结合态氮、磷浓度影响不大;氮素的流失浓度和流失量都比磷素高;在降雨...
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| 关 键 词： | 红壤坡地 泡桐林地 施肥 地表径流 氮流失 磷流失 |
Study on surface runoff and nutrient loss in paulownia forest on red-soil slope-land |
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| LI Enyao,PENG Peiqin,WU Jianping,HOU Hongbo.Study on surface runoff and nutrient loss in paulownia forest on red-soil slope-land[J].Hunan Forestry Science & Technology,2011,38(2):21-25. |
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| Authors: | LI Enyao PENG Peiqin WU Jianping HOU Hongbo |
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| Institution: | 1.Environmental Science and Engineering Research Center,Central South University of Forestry and Technology,Changsha 410004,China;2.Hunan Academy of Forestry,Changsha 410004,China) |
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| Abstract: | The effect of fertilization on surface runoff and nutrient loss in paulownia forest on red-soil slope-land was studied by setting three experimental areas with different treatments.The results showed that understory vegetation could effectively reduce the runoff and sediment yield,nitrogen and phosphorus loss.Dissolved nitrogen was the main form of nitrogen loss,while phosphorus was removed with sediment.The fertilization in paulownia forest increased the concentrations of total nitrogen and total phosphorus in runoff,but had no significant effect on the concentrations of nitrogen and phosphorus in sediment.The loss concentration and loss amount of nitrogen were higher than those of phosphorus.During the rainfall,the concentrations of nitrogen and phosphorus in surface runoff reached the peak at 20 min after runoff being formed,and then decreased gradually,got stable phase after 60~80 min.This study indicated that the fertilization in paulownia forest had little influence on surface water. |
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| Keywords: | red-soil slope-land paulownia forest fertilization surface runoff nitrogen loss phosphorus loss |
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