露天煤矿复垦区人工刺槐林土壤呼吸组分分析  

Component Analysis of Soil Respiration of Robinia Pseudoacacia Plantation in Opencast Coal Mine Reclaimation

作　　者：郭春燕[1,2] 李晋川[2] 岳建英[2] 卢宁[2] 杨生权[2] 王翔[2] 张峰[1] 

机构地区：[1]山西大学黄土高原研究所,山西太原030006 [2]山西省生物研究所,山西太原030006

出　　处：《山西大学学报（自然科学版）》2013年第1期128-132,共5页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省青年基金(2010021027-3);"十二五"国家科技支撑计划(2012BAC10B04);山西省科技重大专项(20121101007);国家公益性行业科研专项(200911015-01)

摘　　要：采用挖壕法和红外气体分析法测定平朔煤矿安太堡露天煤矿复垦区人工刺槐林无根和有根土壤的表面CO2通量(R),确定R中异养呼吸(RH)和根系自养呼吸(RA)的贡献量及其影响因子.结果表明:R与RH具有显著的季节变化(P<0.01),RA随季节变化差异不明显(P>0.05),根呼吸贡献率(RC)呈现明显的季节变化(P<0.01),但变化趋势与R、RH相反.R和RH与温度的回归模型中,均为幂函数相关指数最高(R2=0.115,0.174;P<0.05),与水分均为线性函数相关系数最高(r=0.314,0.430;P<0.01),与温度和水分双因子均为幂函数相关指数最高(R2=0.296,0.404;P<0.05),且RH与温度、水分单因子和双因子的相关性均高于R.RH的Q10值>R的Q10值.Quantifying soil respiration components and their relations to environmental controls are essential to estimates carbon bugets of plantation ecosystems. Trenching-plot and infrared gas exchange analyzer ap- proaches were used to determine heterotrophic respiration （RH） and autotrophie respiration （RA） in soil surface CO2 flux for Robinia pseudoacacia plantation in the reclaimation of Antaibao Opencast Coal Mine, Shanxi. The results showed that there was a significant seasonal variation in R,RA （P〈0. 01） and root res- piration proportion （RC） ,but not in Ra（P〉0.05） and the variant law of RC just was converse to the law of R and RA. Both R and R, in relationship with single of soil temperature and moisture all can be described as a power function（R2 =0. 115,0. 174;P〈（0.05） and liner function（r =0. 314,0. 430;P 〈0.01）and with both of them can be described as a power function（R2 = 0. 296,0. 404 ; P 〈0.05）. Furthermore, the rela- tionship of RH higher than R. The Q10 value, representing the sensitivity of RH to soil temperature was higher than those of R. In order to quantifying soil respiration components of Robinia pseudoacacia planta- tion, we should make long-term dynamic research.

关 键 词：根呼吸 异养呼吸 温度 水分 复垦区 

分 类 号：Q948[生物学—植物学]