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当前位置: 首页 > 文章 > 高寒草甸土壤CO_2和N_2O释放对C、P添加的响应 甘肃农业大学学报 2016,51 (2) 98-103+110
Position: Home > Articles > Responses of CO_2 and N_2O emissions to carbon and phosphorus additions in alpine meadow soil on the Qinghai-Tibetan plateau Journal of Gansu Agricultural University 2016,51 (2) 98-103+110

高寒草甸土壤CO_2和N_2O释放对C、P添加的响应

作  者：
王冬雪;王平
单  位：
中国科学院成都山地灾害与环境研究所;甘肃农业大学资源与环境学院
关键词：
青藏高原;高寒草甸;MBC;DOC;温室气体;全球增温潜能
摘  要：
【目的】探明碳、磷输入对土壤CO_2和N_2O排放的影响.【方法】以青藏高原高寒草甸土壤为研究对象,采用室内培养的方法,设置3个处理(C:碳添加;P:磷添加;CP:碳磷共同添加)和1个对照(CK),研究了碳、磷单独添加以及共同添加对高寒草甸土壤CO_2和N_2O释放的影响.【结果】碳素单独添加或碳、磷共同添加均显著增加了高寒草甸土壤微生物生物量碳(MBC)和微生物生物量氮(MBN)的含量,而磷素单独添加对其影响不显著;碳素单独添加或碳、磷共同添加均显著增加了高寒草甸土壤CO_2和N_2O的释放量,而磷素单独添加对其影响不显著;高寒草甸土壤CO_2释放量与土壤DOC含量呈显著正相关关系;高寒草甸土壤N_2O的产生过程以反硝化作用为主.【结论】不同处理CO_2和N_2O的全球增温潜能(GWP)由大至小顺序为:CP>C>P>CK.
译  名：
Responses of CO_2 and N_2O emissions to carbon and phosphorus additions in alpine meadow soil on the Qinghai-Tibetan plateau
作  者：
WANG Dong-xue;WANG Ping;College of Resources and Environment,Gansu Agricultural University;Institute of Mountain Hazards and Environment,Chinese Academy of Sciences;
关键词：
Tibetan Plateau;;alpine meadow;;MBC;;DOC;;greenhouse gases;;GWP
摘  要：
【Objective】An incubation experiment in laboratory was conducted to examine the effects of the carbon(C)and phosphorus(P)additions on carbon dioxide(CO_2)and nitrous oxide(N_2O)emissions from the soil sampled on Qinghai-Tibetan Plateau.【Method】Four treatments were adopted in this study,included the control(CK)and three treatments of additions(carbon,phosphorus,carbon and phosphorus).【Result】The carbon added individually or carbon,phosphorus add together significantly increased soil microorganisms C(MBC)and N(MBN)content,but the phosphorus added individually was not significant.Carbon added individually or carbon,phosphorus add together were significantly increased the alpine meadow soil CO_2 and N_2O,but the phosphorus added individually was not significant.Data analysis revealed a significant positive correlation between the cumulative CO_2 emissions and the soil DOC concentration.Soil N_2O production was mainly controlled by denitrification.【Conclusion】The variation of global warming potential(GWP)of CO_2 and N_2O for the carbon(C)and phosphorus(P)addition was:CP>C>P>CK.

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