JIANG Yi,LI Yiqiu.Labile Organic Carbon of Different Land Use Patterns in Minjiang River Basin, Sichuan Province[J].Research of Soil and Water Conservation,2017,24(05):33-38.
岷江流域不同土地利用方式下紫色土壤活性有机碳分布特征及其影响因子
- Title:
- Labile Organic Carbon of Different Land Use Patterns in Minjiang River Basin, Sichuan Province
- 分类号:
- S718.5
- 摘要:
- 作为土壤质量的重要指标，土壤活性有机碳（SLOC）在土壤许多物理、化学和生物特性中发挥着重要作用。通过对不同土地利用方式土壤进行采样和分析，系统地研究和比较了四川省岷江流域不同土地利用方式（次生林、人工林、灌草丛和坡耕地）SLOC分布特征及其影响因子。结果表明：岷江流域不同土地利用方式土壤机械组成不尽一致，土壤总孔隙度与土壤容重变化趋势相反。不同土地利用方式对土壤养分具有较大影响，土壤有机碳、全氮、全磷和全钾均呈现出一致性规律，大致表现为次生林和灌草丛高于人工林和坡耕地，而不同土地利用方式土壤全磷差异并不显著（p > 0.05）。不同土地利用方式SLOC均呈现出一致性规律，大致表现为次生林和灌草丛高于人工林和坡耕地。不同土地利用方式SLOC垂直方向随土层深度的增加表现出递增趋势，并且降低幅度逐渐减小，坡耕地、灌草丛、次生林和人工林SLOC从表层至底层逐渐递减，呈“T”形分布，“表聚性”较为明显。人工林、灌草丛和坡耕地在10—20 cm SLOC/SOC比例最高，而次生林0—10 cm SLOC/SOC比例最高，不同土地利用方式SLOC/SOC比例均在30—40 cm最低。相关性分析表明，不同土地利用方式SLOC与SOC和全氮均呈极显著正相关性（p < 0.01），与土壤容重均呈负相关。表明SLOC受土壤养分和机械组成影响较大，其中SOC和全氮是不同土地利用方式SLOC变化的重要影响因素。SLOC与土壤有机碳之间呈极显著正相关关系（R2=0.9961），说明SLOC能够作为研究不同土地利用方式SOC动态变化的一个敏感性指标而提前反映土壤碳库的动态变化，其含量在很大程度上依赖于所处生境下SOC含量。
- Abstract:
- The Minjiang River Basin has great position for its ecology and geography. As an essential indicator of soil quality, soil labile organic carbon (SLOC) and its fractions play an important role in many soil chemical, physical and biological properties. A field experiment was conducted to determine the variation and influencing factors of SLOC under different land use patterns in the Minjiang River Basin. The results are as follows. The soil mechanical composition under different land use patterns was different, and the change trend of soil total porosity was contrary with the soil bulk density. The soil organic carbon, total nitrogen, total phosphorus and total potassium had the same change trends, which showed secondary forest and scrub-grassland higher than that of artificial forest and slope cropland, while the soil total phosphorus had no significant difference under different land use patterns (p > 0.05). SLOC under different land use patterns ordered secondary forest and scrub-grassland higher than that of artificial forest and slope cropland. SLOC declined with decreasing soil depth and showed a decline along the vertical soil profile with a ‘T’ shape distribution with the obvious ‘surface accumulation’. The highest ratio of SLOC/SOC of scrub-grassland, artificial forest and slope cropland was in 10—20 cm, while secondary forest was in 0—10 cm, and the lowest ratio of SLOC/SOC under different land use patterns was in 30—40 cm. Correlation analysis showed that SLOC had a significant difference with SOC, TN (p < 0.01), which indicated that SLOC was mainly depended on the organic carbon content to a large extent. In addition, the content of SOC was the important influencing factors under different land use patterns in the Minjiang River Valley. SLOC and the soil organic carbon presented extremely significant correlation (R2=0.996), which could be a better parameter to reflect the status of soil organic carbon pool in the Minjiang River Valley than soil total organic carbon content.
参考文献/References:
[1] Weil R R, Islam K R, Stine M A, et al. Estimating active carbon for soil quality assessment:A simplified method for laboratory and field use[J]. American Journal of Alternative Agriculture, 2003,18(1):3-17.
[2] Gu L, Post W M, King A W. Fast labile carbon turnover obscures sensitivity of heterotrophic respiration from soil to temperature: A model analysis[J]. Global Biogeochemical Cycles, 2004,18(1):21-38.
[3] Conteh A, Blair G J, Lefroy R, et al. Labile organic carbon determined by permanganate oxidation and its relationships to other measurements of soil organic carbon[J]. Humic substances in the Environment, 1999,1:3-15.
[4] 张会平,杨农,张岳桥,等.岷江水系流域地貌特征及其构造指示意义[J].第四纪研究,2006,26(1):126-135.
[5] 溥发鼎.岷江上游生态学现状及生物多样性保护[J].资源科学,2000,22(5):83-84.
[6] Searchinger T, Heimlich R, Houghton R A, et al. Use of US croplands for biofuels increases greenhouse gases through emissions from land-use change[J]. Science, 2008,319(5867):1238-1240.
[7] 樊宏,张建平.岷江上游半干旱河谷土地利用/土地覆盖研究[J].中国沙漠,2002,22(3):273-278.
[8] White R, Engelen G. Cellular automata and fractal urban form:a cellular modelling approach to the evolution of urban land-use patterns[J]. Environment and Planning A,1993,25(8):1175-1199.
[9] Li X, Yeh A G O. Analyzing spatial restructuring of land use patterns in a fast growing region using remote sensing and GIS[J]. Landscape and Urban Planning, 2004,69(4):335-354.
[10] 祁心,江长胜,郝庆菊,等.缙云山不同土地利用方式对土壤活性有机碳,氮组分的影响[J].环境科学,2015(10):3816-3824.
[11] 宇万太,马强,赵鑫,等.不同土地利用类型下土壤活性有机碳库的变化[J].生态学杂志,2007,26(12):2013-2016.
[12] 莫彬,曹建华,徐祥明,等.岩溶山区不同土地利用方式对土壤活性有机碳动态的影响[J].生态环境,2006,15(6):1224-1230.
[13] 许峰,蔡强国.坡地农林复合系统土壤养分过程研究进展[J].水土保持学报,2000,14(1):82-87.
[14] 俞月凤,何铁光,彭晚霞,等.喀斯特峰丛洼地不同类型森林养分循环特征[J].生态学报,2015,35(22):7531-7542.
[15] 李娟,廖洪凯,龙健,等.喀斯特山区土地利用对土壤团聚体有机碳和活性有机碳特征的影响[J].生态学报,2013,33(7):2147-2156.
[16] 李新爱,肖和艾,吴金水,等.喀斯特地区不同土地利用方式对土壤有机碳,全氮以及微生物生物量碳和氮的影响[J].应用生态学报,2006,17(10):1827-1831.
[17] 廖洪凯,李娟,龙健,等.土地利用及退耕对喀斯特山区土壤活性有机碳的影响[J].环境科学,2014,35(1):240.
[18] 吴秀坤,李永梅,李朝丽,等.纳版河流域土地利用方式对土壤总有机碳以及活性有机碳的影响[J].生态环境学报,2013,22(1):6-11.
[19] 李鉴霖,江长胜,郝庆菊.土地利用方式对缙云山土壤团聚体稳定性及其有机碳的影响[J].环境科学,2014,35(12):4695.
[20] 陈书涛,刘巧辉,胡正华,等.不同土地利用方式下土壤呼吸空间变异的影响因素[J].环境科学,2013,34(3):1017-1025.
相似文献/References:
[1]沈艳,傅瓦利,蓝家程,等.岩溶山地不同土地利用方式土壤颗粒有机碳和矿物结合态有机碳的分布特征[J].水土保持研究,2012,19(06):1.
SHEN Yan,FU Wa-li,LAN Jia-cheng,et al.Distribution Characteristics of Soil Particulate Organic Carbon and Mineral-associated Organic Carbon of Different Land Use in Karst Mountain[J].Research of Soil and Water Conservation,2012,19(05):1.
[2]阳利永,吴献花,赵斌,等.滇池柴河流域不同土地利用方式土壤养分剖面分异[J].水土保持研究,2012,19(05):95.
YANG Li-yong,WU Xian-hua,ZHAO Bin,et al.Effects of Different Land Uses on Profile Variability of Soil Nutrients in Chaihe Basin of Dianchi Lake[J].Research of Soil and Water Conservation,2012,19(05):95.
[3]夏江宝,杨吉华,李红云.不同外界条件下土壤入渗性能的研究[J].水土保持研究,2004,11(02):115.
XIA Jiang-bao,YANG Ji-hua,LI Hong-yun.The Research of Soil Infiltration in Different Outside Factors[J].Research of Soil and Water Conservation,2004,11(05):115.
[4]刘梦云,安韶山,常庆瑞,等.宁南山区不同土地利用方式土壤质量评价[J].水土保持研究,2005,12(03):35.
LIU Meng-yun,AN Shao-shan,CHANG Qing-rui,et al.Soil Quality Evaluation Under Different Land Use in Southern Ningxia Mountain Area[J].Research of Soil and Water Conservation,2005,12(05):35.
[5]刘梦云,安韶山,常庆瑞.宁南山区不同土地利用方式土壤有机碳特征研究[J].水土保持研究,2005,12(03):47.
LIU Meng-yun,AN Shao-shan,CHANG Qing-rui.Features of Soil Organic Carbon Under Different Land Use in Mountain Area of Southern Ningxia[J].Research of Soil and Water Conservation,2005,12(05):47.
[6]李裕元.坡地磷素迁移研究进展[J].水土保持研究,2006,13(05):1.
LI Yu-yuan.Review of Study on Phosphorus Transport on Slope Land[J].Research of Soil and Water Conservation,2006,13(05):1.
[7]李品荣,孟广涛,李国昌.不同土地利用方式下土壤地力变化和水土流失状况研究[J].水土保持研究,2009,16(03):95.
LI Pin-rong,MENG Guang-tao,LI Guo-chang.Study on Land Capacity Change and Soil Erosion on Different Landuse Types[J].Research of Soil and Water Conservation,2009,16(05):95.
[8]温明霞,邵明安,周蓓蓓.马家塔露天煤矿复垦区不同土地利用类型的土壤水分入渗过程研究[J].水土保持研究,2009,16(04):170.
WEN Ming-xia,SHAO Ming-an,ZHOU Bei-bei.Study on Soil Water Infiltration Processes in Different Land Use Types in Majiata Reclaimed Regions[J].Research of Soil and Water Conservation,2009,16(05):170.
[9]满建利,姜成,彭红霞,等.降雨因素和不同土地利用方式对水土流失的影响[J].水土保持研究,2010,17(01):31.
MAN Jian-li,JIANG Cheng,PENG Hong-xia,et al.Effect of Rainfall Factors and Different Ways of Using Land on Soil Erosion[J].Research of Soil and Water Conservation,2010,17(05):31.
[10]郑郁,李占斌,李鹏,等.金沙江干热河谷区不同土地利用方式下的土壤特性分异特征[J].水土保持研究,2010,17(01):174.
ZHENG Yu,LI Zhan-bin,LI Peng,et al.Features of Land Use Type on Soil Properties in the Dry-hot Valley of Jinsha River[J].Research of Soil and Water Conservation,2010,17(05):174.
[11]胡尧,李懿,侯雨乐.不同土地利用方式对岷江流域土壤团聚体稳定性及有机碳的影响[J].水土保持研究,2018,25(04):22.
HU Yao,LI Yi,HOU Yule.Effects of Land Use Types on Stability and Organic Carbon of Soil Aggregates in Minjiang River Valley[J].Research of Soil and Water Conservation,2018,25(05):22.
备注/Memo
收稿日期:2016-10-07;改回日期:2016-10-17。
基金项目:国家自然科学基金（41361091，41371486）；生态安全与保护四川省重点实验室基金（ESP201304，QD2014A001）
作者简介:蒋溢(1975-),女,四川三台人,讲师,硕士,研究方向:土壤与地理资源和区域发展。E-mail:Jiang_yisoil@163.com
通讯作者:李亦秋(1973-),女,四川达县人,博士,副教授,主要研究方向:测绘与3S技术应用、生态遥感、自然资源开发与利用。E-mail:yqiu.li@163.com