Microsoft Word 张忠启_new_.doc

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1 土壤 (Soils), 2015, 47(2): DOI: /j.cnki.tr 红壤典型区不同类型土壤有机碳组分构成及空间分异研究 1,2 1,4* 3 1,4 1,4 1 (1 ( ) ) ( ) g/kg 2.78% 2.83% 2.91% 2.57% g/kg 41.09% 45.25% 46.24% 37.12% g/kg 60.31% 56.13% 51.92% 50.67% S155 [1 2] [3 4] [5] [6 9] [10 11] 118 km ~ E ~ N km 2 ( 1) mm ( ) (XDA ) ( ) * (dshyu@issas.ac.cn) (1978 ) zhangzq128@126.com

2 2 319 Fig. 1 图 1 研究区及土壤采样点位置示意图 Location of study area and distribution of sampling points 51% 49% 3 1 ( ) [12] ( 1) 2.5 km 2.5 km 226 (0 ~ 20 cm) GPS (K 2 Cr 2 O 7 ) [13] [5,14] g 70% 25 3 BaCl 2 HCl NaOH HCl CO 2 [5,15] C C exp( K t) C exp( K t) soct a a s s C exp( K t) r r C soct t C a C s C r K a K s K r (d 1 ) (MRT) MRT lab = MRT field /Q 10 Q 10 = 2 [(25 MAT) /10] ( MAT ) C soct C r (C r ) MRT Lab 599 a K r C a K a K s (C s C s = C soc C r C a ) 99 SAS (1)

3 (Kriging) [11,16] SPSS GS+ ArcGIS g/kg g/kg 3 [11, 17] 表 1 不同土壤类型土壤有机碳含量的描述性统计 Table 1 Descriptive statistics of SOC in various soil types / ( 2) g/kg (20.79 g/kg) 2.79% 41.32% 55.89% [5] [15] 表 2 土壤活性缓性和惰性有机碳含量及占总有机碳的比例 (%) Table 2 Contents of active, slow, and passive SOC and the corresponding proportions in total SOC (C a ) (C s ) (C r ) C a /C soc C s /C soc C r /C soc g/kg( 2) 2.78% 2.83% 2.91% ( 3) (0.33 g/kg) (2.57%) g/kg 41.09% 45.25% 46.42% (4.72 g/kg 37.12%) (7.67 g/kg) (10.36 g/kg) (11.22 g/kg) (13.49 g/kg) (60.31%) (56.12%) 51.92% 50.67% ( 4) 3

$2 研究区不同土壤亚类活性缓性和惰性碳含量 Contents of carbon fractions in various soil subgroups in$ $3 Proportions of SOC fraction contents in total SOC for various soil subgroups$ $Fig. 4 图 4 不同土壤亚类碳组分分解速率 Decomposition rates of SOC fractions in various soil$

4 2 321 图 2 Fig. 2 研究区不同土壤亚类活性缓性和惰性碳含量 Contents of carbon fractions in various soil subgroups in study area 图 3 各土壤亚类有机碳组分占其总有机碳含量的比例 Fig. 3 Proportions of SOC fraction contents in total SOC for various soil subgroups Fig. 4 图 4 不同土壤亚类碳组分分解速率 Decomposition rates of SOC fractions in various soil subgroups 30 CO 2 H 2 O [5] CO ( 5) 图 5 不同土壤亚类活性 (A) 缓性(B) 和惰性碳 (C) 空间分布图 Fig. 5 Spatial distributions of active (A), slow (B) and inert SOC (C) in the study area % ~ 2.91%

5 % ~ 46.42% 50.67% ~ 60.31% [1],,,. [J]., 2014, 51(1): [2],, 喆,,,. Meta [J]., 2013, 50(3): [3] Parton WJ, Schimel DS, Cole CV. Analysis of factors controlling soil organic matter levels in great plains grasslands[j]. Soil Science Society of America Journal, 1987(51): [4],,,,,,,. [J]., 2009, 23(6): [5],,,,. [J]., 2008, 22(1): [6] Shao YH, Pan JJ, Sun B. Effect of a long-term organic manure application on the different available carbons in red soils [J]. Chinese Journal of Eco-Agriculture, 2006(1): [7],,,,. [J]., 2006, 20(2): [8],,. ( ) [J]., 2009, 15(3): [9],,. [J]., (1): [10],. [J], 2006, 21(9): [11],,,,. [J]., 2010, 30(19): [12]. [M]. :, 1991: [13] Nelson DW, Sommers LE. Total carbon, organic carbon, and organic matter // Page AL, Miller RH, Keeney DR. Methods of Soil Analysis, Part 2-chemical and Microbiological Properties [M]. ASA-SSSA,Madison, WI, 1982: [14] Silveira ML, Comerford NB, Reddy KR, Cooper, WT, El-Rifai H. Characterization of soil organic carbon pools by acid hydrolysis[j]. Geoderma, 2008, 144(1/2): [15],,,,,,. [J]., 2009, 30(6): [16] Wang YQ, Zhang XC, Huang CQ. Spatial variability of soil total nitrogen and soil total phosphorus under different land uses in a small watershed on the Loess Plateau, China[J]. Geoderma, 2009, 150(1/2): [17],,,. [J]., 2008, 40(3):

6 2 323 Study on Soil Organic Carbon Components and Its Spatial Variability of Different Soil Types in Hilly Red Soil Region ZHANG Zhong-qi 1,2, YU Dong-sheng 1,4*, PAN Jian-jun 3, ZHANG Hai-dong 1,4, SHI Xue-zheng 1,4, WANG Ning 1 (1 State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing , China; 2 College of Urban and Environmental Sciences, Jiangsu Normal University, Xuzhou, Jiangsu , China; 3 College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing , China; 4 University of Chinese Academy of Sciences, Beijing , China) Abstract: Taking Dongxiang County of Jiangxi Province as a study area, the contents of active, slow, inert soil organic carbon (SOC) and the corresponding proportions of total SOC were analyzed in the soil subgroups on the basis of the three pool theory of SOC and the culture experiments of soil respiration experiments, and then the distribution contours of three SOC fractions of active, slow and inert SOC were obtained with the proportion data aforementioned and another 229 samples collected by grids throughout Dongxiang County. The results showed that the active SOC contents of the four subgroups of Submergenic, Hydragric, Gleyed paddy soil and red soil were 0.54, 0.72, 0.72 and 0.33 g/kg, and the corresponding proportions in total SOC were 2.78%, 2.83%, 2.91% and 2.57%, respectively. The slow SOC contents of four subgroups were 7.57, 9.79, and 4.72 g/kg, and the corresponding proportions in total SOC were 41.09%, 45.25%, 46.24% and 37.12%, respectively. The inert SOC contents of four subgroups were 10.36, 11.22, and 7.67 g/kg, and the corresponding proportions were 60.31%, 56.13% 51.92% and 50.67%, respectively. From the spatial distribution, the contents of active, slow, inert SOC were all decreased from southeast to northwest in Dongxiang County. The contents of active and slow SOC contents of the three subgroups of paddy soil were all higher than that of red soil subgroup. This indicates that the paddy soil is not only the main soil type to carbon sequestration, but also a potential carbon source in hilly red soil region of southern China. The total SOC of red soil is very low, although with higher inert SOC content proportion, and its carbon sequestration ability need to be further improved. Key words: Soil organic carbon (SOC) pool; Soil type; SOC fractions; Hilly red soil region in Southern China

Microsoft Word 李强.doc

Microsoft Word 李强.doc 土壤 (Soils), 2017, 49(3): 565 571 DOI: 10.13758/j.cnki.tr.2017.03.020 1 曲靖烤烟镁含量特征及其影响因素 1,2 2 2 2* 3 4 4 3 4 (1 410128 2 410128 3 655000 4 ( ) 650231) 3 506 4.10 g/kg (0.36 ~ 17.70 g/kg) 46.36%