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Position: Home > Articles > Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province Bulletin of Soil and Water Conservation 2010,30 (6) 27-31

自然降雨条件下氮素输入对滇中坡耕地氮素流失特征的影响

作  者:
宋娅丽;王克勤;王萍;唐佐芯;李秋芳;杜云翔
单  位:
西南林业大学环境科学系
关键词:
氮素;流失特征;自然降雨;坡耕地;滇中
摘  要:
采用野外田间试验和定点监测的方法,通过研究滇中坡耕地地表径流中氮素流失方式、途径反映其流失特征。结果表明,产流量与降雨量相关系数达到0.8641(P<0.05),而土壤侵蚀量与降雨量没有表现出很好的相关关系。在相同降雨条件下,径流总氮、硝态氮、铵态氮浓度总体均表现为随着施氮量的增加,浓度逐渐增加,即CK
译  名:
Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province
作  者:
SONG Ya-li,WANG Ke-qin,WANG Ping,TANG Zuo-xin,LI Qiu-fang,DU Yun-xiang(Southwest Forestry University,School of Environmental Sciences,Kunming,Yunnan 650224,China)
关键词:
nitrogen;loss characteristic;natural rainfall;sloping field;the central Yunnan Province
摘  要:
Sentinel surveillance method was used to study patterns and means of nitrogen loss in sloping fields in the central Yunnan Province so as to reveal nitrogen loss characteristics.Results showed that the related coefficient between runoff and rainfall was 0.864 1,but soil erosion and rainfall did not show a good correlation.Under the same rainfall conditions,the amounts of TN,NO-3—N,and NH+4—N were generally increased with the increased amount of nitrogen in the order of CK

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