The Relationship between the Spatial Scale and the Variation of Soil Organic Matter in China
Received date: 2006-01-13
Revised date: 2006-08-01
Online published: 2006-09-15
Based on the data from the National Second Soil Survey, this paper analyzed the relationship between the variation of soil organic matter and the spatial scales, the variation within and among soil groups, and discussed the correlation between the soil properties and the average content of soil organic matter at various spatial-scales. The results indicated that the variation coefficient of soil organic matter content increased with increasing the number of soil profiles while individual soil profile was taken as a basic statistical unit, and decreased with spatial scale up while average of soil organic matter content in the defined scale was taken as a statistical unit. While soil taxonomy group was taken as the basic spatial unit, the variation coefficient of soil organic matter content within soil group was less than that among soil groups. The correlation between soil properties and soil organic matter content became less significant with spatial scale up. Therefore, when the grid technique or the district was applied to regionalize spatial scale, individual soil profile are needed more to reduce uncertainties of the estimate of soil organic matter in the grid or the district with spatial scale up, but the uncertainties are smaller when using soil organic matter content in well-estimate gird or district to estimate the grid or district without available data by extrapolation. When the soil taxonomy group was taken as the basic spatial scale, the result was reverse.
Key words： Soil organic matter; Variation coefficient.; Scale
WU Le-zhi , CAI Zu-cong1 . The Relationship between the Spatial Scale and the Variation of Soil Organic Matter in China[J]. Advances in Earth Science, 2006 , 21(9) : 965 -972 . DOI: 10.11867/j.issn.1001-8166.2006.09.0965
[1] Eswaran H, Van den Berg E, Reich P. Organic carbon in soils of the world[J]. Soil Science Society of America Journal,1993, 57:192-194.
[2] Jenkinson D S, Adams D E, Wild A. Global warming and soil organic matter[J]. Nature,1991,351:304-306.
[3] Jin Feng, Yang Hao, Zhao Qiguo. Advances in researches on soil organic carbon storages and affecting factors[J]. Soils, 2000, 1: 11-17. [金峰,杨浩,赵其国. 土壤有机碳储量及影响因素研究进展[J]. 土壤,2000,1:11-17.]
[4] Pan Genxing, Li Lianqing, Zhang Xuhui, et al. Soil organic carbon storage of China and the sequestration dynamics in agricultural lands[J]. Advances in Earth Science, 2003,18(4):609-618.[潘根兴,李恋卿,张旭辉,等. 中国土壤有机碳库量与农业土壤碳固定动态的若干问题[J].地球科学进展,2003, 18 (4):609-618.]
[5] Wang Shaoqiang, Zhou Chenghu. Estimating soil carbon reservoir of terrestrial ecosystem in China[J]. Geographical Research, 1999, 18 (4):349-355. [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):349-355.]
[6] Wang Shaoqiang, Zhou Chenghu, Li Kerang, et al. Analysis on spatial distribution characteristics of soil organic carbon reservoir in China[J]. Acta Geographica Sinica, 2000, 55 (5):533-544.[王绍强,周成虎,李克让,等. 中国土壤有机碳库及空间分布特征分析[J].地理学报,2000,55 (5):533-544.]
[7] Pan Genxing. Study on carbon reservoir in soils of China[J]. Bulletin of Science and Technology, 1999, 15(5):330-332.[潘根兴. 中国土壤有机碳、无机碳库量研究[J].科技通报,1999,15 (5):330-332.]
[8] Fang Jingyun, Liu Guohua, Xu Songling. Carbon cycle of terrestrial ecosystem in China and its global meaning[C]∥Wang Gengchen, Wen Yupu, eds. Monitoring and Relevant Process of Greenhouse Gas Concentration and Emission. Beijing: China Environmental Science Press,1996: 129-139. [方精云, 刘国华, 徐嵩龄. 中国陆地生态系统碳循环及其全球意义[C]∥王庚辰, 温玉璞编. 温室气体浓度和排放监测及相关过程. 北京: 中国环境科学出版社,1996:129-139.]
[9] Ni Jian. Carbon storage interrestrial ecosystem of China: Estimates at different spatial resolutions and response to climatic change[J]. Climatic Change,2001,49 (3) : 339-358.
[10] Jenkinson D S, Hart P B S, Rayner J H, et al. Modeling the turnover of organic matter in long-term experiments at rothamsted[J]. Intecol Bulletin, 1987, 15: 1-8.
[11] Jenkinson D S, Rayner J H. The turnover of soil organic matter in some of the rothamsted classical experiments[J]. Soil Science,1997,123(5):298-305.
[12] Molina J A E,Clapp C E,Shaffer M J,et al. NCSOIL, a model of Nitrogen and carbon transformation in soil:Description,calibration and behavior[J]. Soil Science Society of America Journal, 1983, 47: 85-91.
[13] Parton W J,Rasmussen P E. Long-term effects of crop management in wheat-fallow 2, Century model simulations[J]. Soil Science Society of America Journal,1994, 58: 530-536.
[14] Nina Siu-Ngan Lam, Dale A Quattrochi. On the issues of scale, resolution, and fractal analysis in the mapping sciences[J]. The Professional Geographer, 1992, 44: 88-98.
[15] Pickett S T A, Cadenasso M L. Landscape ecology: Spatial heterogeneity in ecological systems[J]. Science, 1995, 269: 331-334.
[16] Dutilleul P, Legendre P. Spatial heterogeneity against heteroscedasticity: An ecological paradigm versus A statistical concept[J]. Oikos,1993, 66: 152-171.
[17] Wang Fei, Li Rui, Yang Qinke, et al. Effect of scale and its mechanism in soil and water loss research[J]. Journal of Soil and Water Conservation, 2003, 17: 167-169. [王飞,李锐,杨勤科,等. 水土流失研究中尺度效应及其机理分析[J]. 水土保持学报,2003, 17:167-169.]
[18] Lu Xuejun, Zhou Chenghu, Zhang Hongyan, et al. Analytical scheme on scale-structure of geographical space[J]. Progress in Geography, 2004, 23 (2): 107-114. [鲁学军,周成虎,张洪岩,等. 地理空间的尺度——结构分析模式探讨[J]. 地理科学进展,2004,23(2):107-114.]
[19] Schwager S J, Mikhailova E A. Estimating variability in soil organic carbon storage-using the method of statistical differentials[J]. Soil Science, 2002, 167(3): 194-200.
[20] Bowman R A, Reeder J D, Wienhold B J. Quantifying laboratory and field variability to assess potential for carbon sequestration[J]. Communications in Soil Science and Plant Analysis,2002, 33(9/10): 1 629-1 642.
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