精河入湖口土壤碳通量研究.doc

2012届本科毕业论文 题目：艾比湖流域土地利用变化及其驱动力分析 学 院：地理科学与旅游学院 专业班级：地理信息系统0班 学生姓名：指导教师： 答辩日期：201年5月日 新疆师范大学教务处 目 录 1 4 2 区域概况 4 2.1区域概况 4 3 研究方法 5 3.1测定采样形式 5 3.2环境因子检测 6 3.3数据分析 6 4 结果与分析 6 4.1土壤CO2通透量的日变化过程比较 6 4.2两测量点土壤CO2通透量与各影响因子之间的关系 6 4.2精河入湖口土壤CO2通透量与各影响因子之间的关系 9 5 结论 10 参考文献： 11 致 谢 12 精河入湖口土壤碳通量研究 摘要：为了探讨精河入湖口土壤中的有机与无机碳的日变化情况，分析其与土壤因子及环境因子之间的相关性，采用Li-8100土壤测定仪器对精河入湖口中所设好的测定点进行了土壤碳通量速度与近地面大气温度、近地面湿度、土壤表层湿度和温度进行连续的日变化野外测量，并对所得数据进行土壤碳通量与近地面的温度和湿度以及与土壤表层湿度和温度的关系进行分析研究。研究结果表明：土壤碳通量与土壤表层湿度的变化呈相反状态，当湿度愈大时土壤碳通量愈小；土壤碳通量与近地面空气温度和土壤表层温度的变化呈相同的变化趋势，即土壤碳通量随着其土壤表层的温度升高而加快，则减慢；最后，根据分析的结果。 关键词：土壤呼吸；近地面空气湿度和温度；土壤表层湿度和温度； The soil carbon flux analysis in Jing River Abstracts：For the sake of soil of organic with have no machine carbon of day variety circumstance in Jing River, and analysis it with the relativity of soil factor and environment factor. This literary grace the measurement instrument of the soil Li-8100 to the Jing river in the good measurement establish point, then carried on the soil carbon flux speed and vicinity district atmosphere temperature, vicinity district humidity degree, the soil surface layers humidity degree and temperature to carry on continuous of day variety of open country measure. Combine carry on temperature and humidity degree of the soil surface layer and vicinity district to the income data and the humidity degree and temperature of the soil of relation carry on analysis. Research result enunciation: The variety of the soil carbon flux and soil surface layer humidity degree present contrary appearance. And with the soil surface layer humidity degree be increasing, the soil carbon flux be cutting down; The variety of the soil carbon flux and the vicinity district air temperature and soil surface layer temperature present homology of variety trend, namely soil carbon the flux go up but speed along with the temperature of soil surface layer, whereas then r