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草业科学  2014 

围封和放牧对退化盐碱草地土壤碳、氮、磷储量的影响

DOI: 10.11829\j.issn.1001-0629.2013-0723, PP. 1811-1819

Keywords: 围封,放牧,盐碱草地,退化,土壤

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Abstract:

?通过时间序列上围封和放牧的对比,研究了退化盐碱草地土壤碳、氮、磷储量及其变化与放牧管理的关系。结果表明,持续放牧5、6、8年后退化草地地上生物量分别降低了10.3%、52.6%和80.7%;而围封5、6、8年后地上退化草地地上生物量分别增加了33.9%、72.4%和92.2%;地下生物量对放牧管理的响应趋势与地上生物量相同。持续放牧增加了土壤pH和容重,降低了土壤养分浓度;围封对土壤pH、容重和土壤养分浓度的作用与放牧相反。围封后,表层土壤有机碳和总磷储量逐渐增加,总氮储量先降低后增加。然而放牧下,表层土壤碳、氮、磷储量均表现为先增加后降低。由于土壤容重的降低,封育5年后,围封地土壤碳、氮、磷储量要低于放牧地。土壤碳储量的变化对地上生物量的变化响应显著,因此,地上植被的变化能作为土壤碳储量有效的指示因子。

References

[1]  Jobbágy E G,Jackson R B.The vertical distribution of soil organic carbon and its relation to climate and vegetation[J].Ecological Applications,2000,10(2):423-436.
[2]  Scurlock J M O,Hall D O.The global carbon sink:A grassland perspective[J].Global Change Biology,1998,4(2):229-233.
[3]  Eswaran H,Vandenberg E,Reich P.Organic carbon in soils of the world[J].Soil Science Society of America Journal,1993,57(1):192-194.
[4]  Wang W,Fang J.Soil respiration and human effects on global grasslands[J].Global and Planetary Change,2009,67(1):20-28.
[5]  Schlesinger W H,Reynolds J F,Cunningham G L,Huenneke L F,Jarrell W M,Virginia R A,Whitford W G.Biological feedbacks in global desertication[J].Science,1990,247:1043-1048.
[6]  Hungate B A,Holland E A,Jackson R B,Chapin F S,Mooney H A,Field C B.The fate of carbon in grasslands under carbon dioxide enrichment[J].Nature,1997,388:576-579.
[7]  Li F R,Zhao W Z,Liu J L,Huang Z G.Degraded vegetation and wind erosion influence soil carbon,nitrogen and phosphorus accumulation in sandy grasslands[J].Plant and Soil,2009,317(1-2):79-92.
[8]  刘加文.应对全球气候变化决不能忽视草原的重大作用[J].草地学报,2010,18(1):1-4.
[9]  Akiyama T,Kawamura K.Grassland degradation in China:Methods of monitoring,management and restoration[J].Grassland Science,2007,53(1):1-17.
[10]  Semmartin M,Aguiar M R,Distel R A,Moretto A S,Ghersa C M.Litter quality and nutrient cycling affected by grazing-induced species replacements along a precipitation gradient[J].Oikos,2004,107(1):148-160.
[11]  Song Y T,Zhou D W,Zhang H X,Li G D,Jin Y H,Li Q.Effects of vegetation height and density on soil temperature variations[J].Chinese Science Bulletin,2013,58(8):1-6.
[12]  Li F R,Kang L F,Zhang H,Zhao L Y,Shirato Y,Taniyama I.Changes in intensity of wind erosion at different stages of degradation development in grasslands of Inner Mongolia,China[J].Journal of Arid Environments,2005,62(4):567-585.
[13]  Dormaar J F,Adams B W,Willms W D.Effects of grazing and abandoned cultivation on a Stipa-Bouteloua community[J].Journal Rangeland Management,1994,47(1):28-32.
[14]  Lavado R S,Sierra J O,Hashimoto P N.Impact of grazing on soil nutrients in a Pampean grassland[J].Journal of Range Management,1996,49(5):452-457.
[15]  Soussana J F,Allard V,Pilegaard K,Ambus P,Ammann C,Campbell C,Ceschia E,Clifton-Brown J,Czobel S,Domingues R,Flechard C,Fuhrer J,Hensen A,Horvath L,Jones M,Kasper G,Martin C,Nagy,Neftel A,Raschi A,Baronti S,Rees R M,Skiba U,Stefani P,Manca G,Sutton M,Tuba Z,Valentini R.Full accounting of the greenhouse gas (CO2,N2O,CH4) budget of nine European grassland sites[J].Agriculture,Ecosystems and Environment,2007,121(1):121-134.
[16]  董晓玉,傅华,李旭东,牛得草,郭丁,李晓东.放牧与围封对黄土高原典型草原植物生物量及其碳氮磷贮量的影响[J].草业学报,2010,19(2):175-182.
[17]  安慧,徐坤.放牧干扰对荒漠草原土壤性状的影响[J].草业学报,2013,22(4):35-42.
[18]  何念鹏,韩兴国,于贵瑞.内蒙古放牧草地土壤碳固持速率和潜力[J].生态学报,2012,32(3):844-851.
[19]  周道玮,李强,宋彦涛,王学志.松嫩平原羊草草地盐碱化过程[J].应用生态学报,2011,22(6):1423-1430.
[20]  李强,刘延春,周道玮,宋彦涛.松嫩退化草地三种优势植物群落对封育的响应[J].东北师大学报(自然科学版),2009,41(2):139-144.
[21]  王仁忠,李建东.放牧对松嫩平原羊草草地影响的研究[J].草业科学,1992,9(2):11-14.
[22]  中国科学院土壤研究所.土壤理化分析方法[M].上海:上海科技出版社,1978.
[23]  Pei S F,Fu H,Wan C G.Changes in soil properties and vegetation following exclosure and grazing in degraded Alxa desert steppe of Inner Mongolia,China[J].Agriculture,Ecosystem and Environment,2008,124(1):33-39.
[24]  Wu G L,Du G Z,Liu Z H,Thirgood S.Effect of fencing and grazing on a Kobresia-dominated meadow in the Qinghai-Tibetan Plateau[J].Plant and Soil,2009,319(1-2):115-126.
[25]  刘伟,周华坤,周立.不同程度退化草地生物量的分布模式[J].中国草地,2005,27(2):9-15.
[26]  Rubio R W,Bochet E.Desertification indicators as diagnosis criteria for desertification risk assessment in Europe[J].Journal of Arid Environment,1998,39(2):113-120.
[27]  张晓光,黄标,梁正伟,赵永存,孙维侠,胡文友.松嫩平原西部土壤盐碱化特征研究[J].土壤,2013,45(2):332-338.
[28]  萨茹拉,侯向阳,李金祥,丁勇,吴新宏,运向军.不同放牧退化程度典型草原植被-土壤系统的有机碳储量[J].草业学报,2013,22(5):18-26.
[29]  周翰舒,杨高文,刘楠,阚海明,张英俊.不同退化程度的草地植被和土壤特征[J].草业科学,2014,31(1):30-38.

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