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草业学报  2010 

黄土高原不同地形封育草地的土壤呼吸日动态与影响因子分析

, PP. 42-49

Keywords: 不同地形,封育草地,土壤呼吸,影响因子,黄土高原

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Abstract:

采用动态密闭气室红外CO2分析法(IRGA)对黄土高原丘陵沟壑区不同地形的封育草地土壤呼吸速率日动态进行了测定,并分析了土壤呼吸与土壤温度、土壤水分、地下生物量和地形间的关系。研究结果显示,草地的土壤呼吸日动态呈单峰曲线,最小值为0.393~1.103μmol/(m2·s),出现在凌晨;最大值为1.034~1.405μmol/(m2·s),出现在14时左右,可以用正弦曲线拟合;而且不同样地间土壤呼吸速率与土壤温度间的关系均可用指数函数描述。土壤日均呼吸速率在不同地形的草地间存在差异,平坦草地为1.229μmol/(m2·s),东北坡15°,30°和45°草地分别为1.138,1.033和0.890μmol/(m2·s);西南坡15°,30°和45°草地分别为1.036,0.859和0.379μmol/(m2·s);土壤呼吸速率随坡度的增大而减小,东北坡土壤呼吸速率小于西南坡,与不同样地间土壤水分和地下生物量的变化趋势一致,而且研究结果表明土壤呼吸的这种差异主要是受地形影响的土壤水分和地下生物量空间分布差异性决定的,而不同样地间土壤平均温度差异不显著(P>0.05)。

References

[1]  崔骁勇, 陈佐忠, 陈四清. 草地土壤呼吸研究进展[J]. 生态学报, 2001, 21(2): 316-325.
[2]  Rodeghiero M, Cescatti A. Spatial variability and optimal sampling strategy of soil respiration[J]. Forest Ecology and Management, 2008, 255(1):106-112.
[3]  常宗强, 史作民, 冯起, 等. 黑河流域山区牧坡草地土壤呼吸的时间变化及水热因子影响[J]. 应用生态学报, 2005, 16(9): 1603-1606.
[4]  Maestre F T, Cortina J. Small-scale spatial variation of soil CO2 efflux in a Mediterranean semiarid steppe[J]. Applied Soil Ecology, 2003, 23: 199-209.
[5]  Rodeghiero M, Cescatti A. Indirect partitioning of soil respiration in a series of evergreen forest ecosystems[J]. Plant Soil, 2006, 284: 7-22.
[6]  Rayment M B, Jarvis P G. Temporal and spatial variation of soil CO2 efflux in a Canadian boreal forest[J]. Soil Biology and Biochemistry, 2000, 32: 35-45.
[7]  Scott-Denton L E, Sparks K L, Monson R K. Spatial and temporal controls of soil repiration rate in a high-elevation subalpine forest[J]. Soil Biology and Biochemistry, 2003, 35: 525-534.
[8]  Law B E, Kelliher F M, Baldocchi D D, et al. Spatial and temporal variation in respiration in a young ponderosa pine forest during a summer drought[J]. Agriculture and Forest Meteorology, 2001, 110: 27-43.
[9]  侯扶江, 杨中艺. 放牧对草地的作用[J]. 生态学报, 2006, 26(1): 244-264.
[10]  侯扶江, 李广, 常生华. 放牧草地健康管理的生理指标[J]. 应用生态学报, 2002, 18(8): 1049-1053.
[11]  郭然, 王效科, 逯非, 等. 中国草地土壤生态系统固碳现状和潜力[J]. 生态学报, 2008, 28(2): 862-867.
[12]  石锋, 李玉娥, 高清竹, 等. 管理措施对我国草地土壤有机碳的影响[J]. 草业科学, 2009, 26(3): 9-15.
[13]  Tan Z X, Rattan L. Carbon sequestration potential estimates with changes in land use and tillage practice in Ohio, USA[J]. Agriculture, Ecosystems and Environment, 2005, 111: 140-152.
[14]  Risch A C, Frank D A. Carbon dioxide effluxes in a spatially and temporally heterogeneous temperate grassland[J]. Oecologia, 2006, 147: 291-302.
[15]  Liu W X, Xu W H, Han Y, et al. Responses of microbial biomass and respiration of soil to topography, burning,and nitrogen fertilization in a temperate steppe[J]. Biology and Fertility of Soils, 2007, 44: 259-268.
[16]  Xu W H, Wan S Q. Water and plant-mediated responses of soil respiration to topography, fire, and nitrogen fertilization in a semiarid grassland in northern China[J]. Soil Biology and Biochemistry, 2008, 40(3): 679-687.
[17]  齐丽彬, 樊军, 邵明安, 等. 黄土高原水蚀风蚀交错带不同土地利用类型土壤呼吸季节变化及其环境驱动[J]. 生态学报, 2008, 28(11): 5428-5436.
[18]  王俊明, 张兴昌. 退耕草地演替过程中的碳储量变化[J]. 草业学报, 2009, 18(1): 1-8.
[19]  Ren J Z, Hu Z Z, Zhao J, et al. A grassland classification system and its application in China[J]. Rangeland Journal,2008,30(2):197-198.
[20]  侯扶江, 肖金玉, 南志标. 黄土高原退耕地的生态恢复[J]. 应用生态学报, 2002, 13(8): 923-929.
[21]  田梅, 侯扶江. 3种植物枯落物水提液对达乌里胡枝子幼苗生长的作用[J]. 草业科学, 2009, 26(1): 45-49.
[22]  刘艳萍, 荣浩, 邢恩德. 不同措施对退化草地土壤和植被的影响[J]. 水土保持研究, 2007, 14(6): 345-347.
[23]  唐燕飞, 王国兵, 阮宏华. 土壤呼吸对温度的敏感性研究综述[J]. 南京林业大学学报(自然科学版), 2008, 32(1): 124-128.
[24]  陈全胜, 李凌浩, 韩兴国, 等. 典型温带草原群落土壤呼吸温度敏感性与土壤水分的关系[J].生态学报, 2004, 24(4): 831-836.
[25]  陈全胜, 李凌浩, 韩兴国, 等. 水热条件对锡林河流域典型草原退化群落土壤呼吸的影响[J]. 植物生态学报, 2003, 27(2): 202-209.
[26]  Raich J W, Tufekcioglu A. Vegetation and soil respiration: Correlations and controls[J]. Biogeochemistry, 2000, 48: 71-90.
[27]  李玉强, 赵哈林, 赵学勇, 等. 科尔沁沙地夏秋(6-9月)季不同类型沙丘土壤呼吸对气温变化的响应[J]. 中国沙漠, 2008, 28(2): 249-254.
[28]  Liloyd J, Tailor J A. On the temperature dependence of soil respiration[J]. Functional Ecology, 1994, 8: 315-323.
[29]  Knapp A K, Fahnestock J T, Hamburg S P, et al. Landscape patterns in soil-plant water relations and primary production in tallgrass prairie[J]. Ecology, 1993, 74: 549-560.
[30]  Briggs J M, Knapp A K. Interannual variability in primary production in tallgrass prairie: Climate, soil moisture, topographic position and fire as determinants of aboveground biomass[J]. American Journal of Botany, 1995, 82: 1024-1030.
[31]  Hook P B, Burke I C. Biogeochemistry in a shortgrass landscape: Control by topography, soil texture,and microclimate[J]. Ecology, 2000, 81: 2686-2703.
[32]  Kang S, Doh S, Lee D, et al. Topographic and climatic controls on soil respiration in six temperate mixed-hard wood forest slopes, Korea[J]. Global Change Biology, 2003, 9: 1427-1437.
[33]  Ohashi M, Gyokusen K. Temporal change in spatial variability of soil respiration on a slope of Japanese cedar (Cryptomeria japonica D. Don) forest[J]. Soil Biology & Biochemistry, 2007, 39: 1130-1138.
[34]  侯扶江, 常生华, 于应文, 等. 放牧家畜的践踏作用研究评述[J]. 生态学报, 2004, 24(4): 784-789.
[35]  闫玉春, 唐海萍. 草地退化相关概念辨析[J]. 草业学报, 2008, 17(1): 93-99.

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