表土有机碳含量随土壤分类单元的变异研究——以安徽六安市土壤为例
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摘要
利用第二次全国土壤普查资料,以安徽六安市域为例研究统计了土壤表土有机碳平均含量随土壤分类级别的变异,结果表明供试市域的土壤有机碳含量在不同分类单元层次上上存在明显差异。表土有机碳含量的变化范围介于4.58 g kg-1～60.38 g kg-1,在土种尺度上变异系数为4.29%～83.78%,土属尺度上变异系数为0.88%～120.56%;亚类尺度上为11.97%～95.37%,而土类尺度上为18.92%～95.42%。
Base on the data of the second national soil survey of Luan in 1986,the different variation analysis of spatial distribution and soil taxonomy unit of topsoil organic carbon in Luan was studied.The results showed that the topsoil organic carbon in Luan had a significant change at different soil taxonomy unit levels.The change was much greater at soil group than that at soil species level.In the different types of land use,every soil taxonomy unit(from soil species to great soil group) all showed that soil organic carbon content was the highest(up to 13.99±2.19 g kg-1) in non-cultivation soils,and the lowest was in dry cropland(8.44±0.92 g kg-1),and paddy soil organic carbon content was 10.36±1.58 g kg-1.The variable coefficient was the lowest in paddy soils(17.19%),and the highest was in non-cultivation soils(40.01%),whereas variable range was not significant.All results showed content of soil organic carbon variability depended on spatial scale and natural condition.
Base on the data of the second national soil survey of Luan in 1986,the different variation analysis of spatial distribution and soil taxonomy unit of topsoil organic carbon in Luan was studied.The results showed that the topsoil organic carbon in Luan had a significant change at different soil taxonomy unit levels.The change was much greater at soil group than that at soil species level.In the different types of land use,every soil taxonomy unit(from soil species to great soil group) all showed that soil organic carbon content was the highest(up to 13.99±2.19 g kg-1) in non-cultivation soils,and the lowest was in dry cropland(8.44±0.92 g kg-1),and paddy soil organic carbon content was 10.36±1.58 g kg-1.The variable coefficient was the lowest in paddy soils(17.19%),and the highest was in non-cultivation soils(40.01%),whereas variable range was not significant.All results showed content of soil organic carbon variability depended on spatial scale and natural condition.
引文
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[14]ZHAO Y C,SHI X Z,WEINDORF D C,et al.Map scale effects onsoil organic carbon stock estimation in North China[J].Soil ScienceSociety of America Journal.2006,70(4):1377-1386.
[15]YU D S,SHI X Z,SUN W X,et al.National scale analysis of soilorganic carbon storage in China based on Chinese Soil Taxonomy[J].Pedosphere,2007.(1):13-20.
[2]BATJES N H.Total carbon and nitrogen in the soil of the world[J].European Journal of Soil Science,1996,47(2):151-163.
[3]BOHNHL.Estimateoforganiccarbon in world soils[J].SoilSciencesSoci-ety of America Journal,1976,40:458-470.
[4]BOLINB.,SUKUMAR R.Global perspective In:WATSON R T.,NOBLEI R.,BOLIN B.,RAVINDRANATH N H.,VERARDO D J.,DOKKEND J.,eds.Land-use Change,and Forestry,A Special Report ofthe IPCC[R].Cambridge UniversityPress,Cambridge,MA,2000,23-51.
[5]BOHN H L.Estimate of organic carbon in world soils[J].Soil SciencesSociety of America Journal,1982,46:1118-1119.
[6]ANTHONY WKING.Translating Models Across Scales in the Land-scape[C]//MONICA G TURNER,ROBERT H GARDNER eds.Quantitative Methods in Landscape Ecology.Springer Verlag,1991:479-518.
[7]潘根兴.中国土壤有机碳和无机碳库量研究[J].科技通报,1999,15(5):330-332.
[8]王绍强,周成虎.中国陆地土壤有机碳库的估算[J].地理研究,1999,18(4):349-356.
[9]金峰,杨浩,蔡祖聪.土壤有机碳密度及储量的统计研究[J].土壤学报,2001,38(4):522-528.
[10]解宪丽,孙波,周慧珍,等.中国土壤有机碳密度和储量的估算与空间分布分析[J].土壤学报,2004,41(1):35-43.
[11]吴乐知,蔡祖聪.中国土壤有机质含量变异性与空间尺度的关系[J].地球科学进展,2006,21(9):965-972.
[12]DAVIDSON E A,LEFEBVRE P A.Estimating regional carbon stocksand spatially covarying edaphic factors using soil maps at 3 scales[J].Biogeochemistry,1993,22(2):107-131.
[13]GALBRAITH J M.,KLEINMAN P J A.,BRYANT R B..Sources ofuncertainty affecting soil organic carbon estimates in Northern NewYork[J].Soil Science Society of America Journal,2003,67(4):1206-1212.
[14]ZHAO Y C,SHI X Z,WEINDORF D C,et al.Map scale effects onsoil organic carbon stock estimation in North China[J].Soil ScienceSociety of America Journal.2006,70(4):1377-1386.
[15]YU D S,SHI X Z,SUN W X,et al.National scale analysis of soilorganic carbon storage in China based on Chinese Soil Taxonomy[J].Pedosphere,2007.(1):13-20.
目录