山西省孝义矿区不同植被恢复方式下土壤呼吸、温度和水分季节特征  

Seasonal Characteristics of Soil Respiration,Temperature and Moisture Under Different Regeneration Scenarios in Xiaoyi Mining Area of Shanxi Province

作　　者：李君剑[1] 温亮[1] 韩广[1] 赵溪[1] 严俊霞[1] 王健[1] 李洪建[1] 

机构地区：[1]山西大学黄土高原研究所,山西太原030006

出　　处：《水土保持通报》2012年第3期56-61,共6页Bulletin of Soil and Water Conservation

基　　金：国家科技支撑计划项目"宜农工矿废弃地固碳技术研究与示范"(2008BAD95B04);山西省农业攻关资助项目"山西矿区废弃地景观与植被重建技术研究"(2008-03-11075)

摘　　要：对山西省孝义露天煤矿覆土,种植百脉根、苜蓿、柳树—圆柏混交林和油松林土壤的容重、pH值、有机碳、总氮以及土壤呼吸、温度、和水分的季节变化进行了测定,并对土壤呼吸与土壤温度、水分之间的关系进行了模拟分析。结果表明,不同的植被恢复方式对土壤容重、有机碳、碳氮比和土壤呼吸年均值影响较大,而对土壤pH值和总氮未产生显著影响。土壤温度季节变化曲线为单峰,高斯拟合结果为极显著水平相关;土壤水分随季节波动较大;土壤呼吸季节变化近似于单峰曲线,但高斯拟合的相关性并不显著。苜蓿地土壤呼吸与土壤温度单因子的高斯拟合,以及与土壤温度和水分的双因子拟合系数较高,而百脉根和油松林土壤呼吸与土壤水分相关性强。The research was carried out in Xiaoyi open pit coal mine.Soil bulk density,pH value,organic carbon and total nitrogen,as well as the seasonal variations of soil respiration,temperature and water content,were measured under Lotus corniculatus,Medicago sativa,Salix matsudana,Sabina chinensis mixed forest and Pinus tabulaeformis plantations.In addition,the relations of soil respiration to temperature and water content were simulated.Results show that significant differences in soil bulk density,soil organic carbon,ratio of carbon to nitrogen and average annual soil respiration are found under different vegetation types,but not significant in soil pH value and total nitrogen.Seasonal variation of soil temperature shows a single curve over season and correlation for Guassian fitting is significant.Soil water content fluctuates with season.Seasonal variation of soil respiration approximately manifests a single peak,but correlation for Guassian fitting is not significant.Higher regression coefficient is found for the relationship between soil respiration and temperature when fitted with Guassian equation and for the relationships between soil respiration and the two variables of temperature and soil water content with linear and nonlinear equations in M.sativa.And a stronger exponential relationship between soil respiration and water content is found in both L.corniculatus and P.tabulaeformis.

关 键 词：植被恢复方式 土壤呼吸 土壤温度 土壤水分 关系模型 

分 类 号：Q142[生物学—生态学]