草原土壤斥水性与土壤理化因子的相关性分析
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摘要
采用滴水穿透时间法(WDPT)测量在锡林浩特市采集的草原土壤样品(0～20cm,n=80)的斥水性(SWR),并对土壤物理化学参数如土壤含水量、有机质(SOM)含量和SWR的相关性进行分析。结果表明,土壤斥水性与含水量的关系符合正态分布,当土壤含水量为10.7%时,SWR达到峰值,平均为80s,斥水性与土壤粒径呈负相关(r=-0.753),土壤SWR值与总氮、速效氮含量和有机质含量呈正相关关系,与草地土壤中速效磷、速效钾和pH的相关性较低。上述研究结果揭示了土壤斥水性的影响因素,为提出土壤斥水性的改良措施提供依据。
The objective of this study was to investigate the relationship between soil water repellency(SWR)and soil physical-chemical properties.The water content and organic matter of soil,sampling(0～20cm,n=80)in Xilin gol grassland were measured,and the SWR was analyzed using the water drop penetration time test(WDPT).Results showed that the relationship between SWR and soil water content accord with normal distribution.The average SWR was 80 s,and SWR reached its peaked when the soil water content was 10.7%.SWR and soil particle size were negatively correlated(r =-0.753).Soil WDPT values was positively correlated with total nitrogen,available nitrogen content and organic matter content,and had poorly correlated with available phosphorus,available potassium and pH in grassland soils.Our results can provide the influencing factors of SWR and provide the basis for the improvement measure of SWR.
The objective of this study was to investigate the relationship between soil water repellency(SWR)and soil physical-chemical properties.The water content and organic matter of soil,sampling(0～20cm,n=80)in Xilin gol grassland were measured,and the SWR was analyzed using the water drop penetration time test(WDPT).Results showed that the relationship between SWR and soil water content accord with normal distribution.The average SWR was 80 s,and SWR reached its peaked when the soil water content was 10.7%.SWR and soil particle size were negatively correlated(r =-0.753).Soil WDPT values was positively correlated with total nitrogen,available nitrogen content and organic matter content,and had poorly correlated with available phosphorus,available potassium and pH in grassland soils.Our results can provide the influencing factors of SWR and provide the basis for the improvement measure of SWR.
引文
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[2]张培培,赵允格,王媛,等.黄土高原丘陵区生物结皮土壤的斥水性[J].应用生态学报,2014,25(3):657-663.Zhang Peipei,Zhao Yunge,Wang Yuan,et al.Impact of biological soil crusts on soil water repellence in the hilly Loess Plateau region,China[J].Chinese Journal of Applied Ecology,2014,25(3):657-663.
[3]李子忠,吴延磊,龚元石,等.内蒙古草原土壤斥水性的季节变化[J].干旱地区农业研究.2010,28(2):208-213.Li Zizhong,Wu Yanlei,Gong Yuanshi,et al.Seasonal change of soil water repellency in Inner Mongolia grassland[J].Agricultural Research in the Arid Areas,2010,28(2):208-213.
[4] Martínez-Murillo J F,Gabarrón-Galeote M A,Ruiz-Sinoga J D,et al.Soil water repellency in Mediterranean rangelands under contrasted climatic,slope and patch conditions in southern Spain[J].Catena,2013,110:196-206.
[5] Hallett P D,Hallett P D,Nunan N,et al.Millimeter-scale spatial variability in soil water sorptivity:scale,surface elevation,and subcritical repellency effects[J].Soil Science Society of America Journal,2004,68(2):352~258.
[6]郭丽俊,李毅,李敏,等.农田土壤斥水性与理化性质的空间变异性[J].土壤学报,2011,48(1):37~45.Guo Lijun,Li Yi,Li Min,et al.Spatial variability of soil water repellency and soil physical-chemical properties in a salinizedalkaline field[J].Acta Pedologica Sinica,2011,48(1):37~45.
[7] Müller K,Deurer M,Mueller K,et al.Review of the remediation strategies for soil water repellency[J].Agriculture Ecosystems and Environment,2011,144:208-221.
[8]刘国华,沈果,王振龙,等.放牧对锡林郭勒草原植被生物量和土壤动物群落的影响[J].中国草地学报,2013,35(3):72~76.Liu Guohua,Shen Guo,Wang Zhenlong,et al.Effects of grazing on vegetation biomass and soil animals communities in Xilingol grassland[J].Chinese Journal of Grassland,2013,35(3):72~76.
[9] Sparks D L,Page A L,Johnston C T,et al.Methods of soil analysis Part 3.Chemical methods[M].SSSA Book series No.5.SSSA,Madison,1996:1085-1121.
[10] Cornfi eld A H.Ammonia released on treating soils with N sodium hydroxide as a possible means of predicting the nitrogen-supplying power of soils[J].Nature,1960,187:260-261.
[11] Doerr S H,Llewellyn C T,Douglas P,et al.Extraction of compounds associated with water repellency in sandy soils of different origin[J].Australian Journal of Soil Research,2005,43:225-237.
[12] Regalado C M,Ritter A.Characterizing water dependent soil repellency with minimal parameter requirement[J].Soil Science Society of America Journal,2005,69:1955-1966.
[13] De Jonge L W,Moldrup P,Jacobsen O H,et al.Soil-water content dependency of water repellency in soils:effect of crop type,soil management,and physical-chemical parameters[J].Soil Science,2007,172:577-588.
[14] Doerr S H,Woods S W,Martin D A,et al.‘Natural background’soil water repellency in conifer forests of the northwestern USA:Its prediction and relationship to wildfire occurrence[J].Journal of Hydrology,2009,371(1):12-21.
[15] Dekker L W,Ritsema C J.Preferential flow paths in a water repellent clay soil with grass cover[J].Water Resource Research,1996,32(5):1239-1249.
[16] De-Jonge H,de-Jonge L W.Influence of pH and solution composition on the sorption of glyphosate and prochlorza to a sandy loam soil[J].Chemosphere,1999,39(5):753-763.
[17] Zavala L M,González F A,Jordán A,et al.Fire-induced soil water repellency under different vegetation types along the Atlantic dune coast-line in SW Spain[J].Catena,2009b,79:153-162.
[18]Martínez-Zavala L,Jordán-López A.Influence of different plant species on water repellency in mediterranean heathland soils[J].Catena,2009,76:215-223.
[19] Chabukdhara M,Nema A K.Assessment of heavy metal contamination in Hindon River sediments:A chemometric and geochemical approach[J].Chemosphere,2012,87(8):945-953.
[20] Yan C Z,Li Q Z,Zhang X,et al.Mobility and ecological risk assessment of heavy metals in surface sediments of Xia-men Bay and its adjacent areas,China[J].Environmental Earth Sciences,2010,60(7):1469-1479.
[21] Piccolo A,Mbagwu J S C.Role of hydrophobic components of soil organic matter in soil aggregate stability[J].Journal of the Soil Science Society of America,1999,63:1801-1810.
[22] McKissock I,Gilkes R J,Van Bronswijk W,et al.The relationship of soil water repellency to aliphatic C and kaolin measured using DRIFT[J].Australian Journal of Soil Research,2003,41(2):251-265.