Effects of grazing intensity on biomass and soil physical and chemical characteristics in  alpine meadow in the source of three rivers

Feng-xia LI; Xiao-dong LI; Bing-rong ZHOU; Dong-lin QI; Li WANG; Hua FU

doi:10.11829/j.issn.1001-0629.2014-0037

Pratacultural Science > 2015 > 9(1): 11-18. > DOI: 10.11829/j.issn.1001-0629.2014-0037

Feng-xia LI, Xiao-dong LI, Bing-rong ZHOU, Dong-lin QI, Li WANG, Hua FU. Effects of grazing intensity on biomass and soil physical and chemical characteristics in alpine meadow in the source of three rivers[J]. Pratacultural Science, 2015, 9(1): 11-18. DOI: 10.11829/j.issn.1001-0629.2014-0037

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Effects of grazing intensity on biomass and soil physical and chemical characteristics in alpine meadow in the source of three rivers

1.
Qinghai Institute of Meteorological Science, Xining 810001, China
2.
College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730020, China

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Received Date: January 19, 2014
Published Date: January 14, 2015

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Human activity has adversely affected global carbon(C) and nitrogen(N), and contributed to an alteration of climate that will generate discernible feedbacks to all organisms and ecosystems on earth. The purpose of this study was to provide the basis of degrading mechanisms in alpine meadow research and understanding global C reserves and quantifying the pools and changing of soil carbon under grazing intensity. The combined methods of field survey and experiment analysis were applied to detect the influence of biomass and soil carbon characteristics under different grazing intensity: enclosure (EN), light grazing (LG), moderate grazing (MG), heavy grazing(HG) and control (CK)on an alpine meadow. The experiment plots were located in the Yushu Longbao alpine meadow. The results showed that aboveground biomass and underground biomass of grassland were maximum in EN treatment. With the grazing intensity increasing, the aboveground biomass and underground biomass decreased. The soil moisture in EN and LG treatments were significantly higher(P＜0.05) than the other treatments which influenced by grazing disturbance. In the soil profile, the soil moisture decreased with soil depth increase in all treatments. Trampling of grazed not only influenced soil moisture but also impacted soil bulk density, the soil bulk density increased with the grazing intensity increasing. The soil organic carbon(SOC) and total nitrogen were also influenced by grazing, the total nitrogen decreased in the following order: LG＞EN＞MG＞CK＞HG whereas the SOC decreased in the following order LG＞EN＞MG＞HG＞CK. Optium trampling of grazing increased soil bulk density, however, but the effects on meadow vegetation and soil structure of high grazing intensity were not benefical for sustainable development of grassland ecosystem.
- Tibetan Plateau,
- alpine meadow,
- grazing,
- soil physical and chemical characteristics

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[1]

Scurlock J M,Hall D O.The global carbon sink:A grassland perspective[J].Global Change Biology.1998,4:229-233Conant R T,Paustian K,Elliott E T.Grassland management and conversion into grassland:Effects on soil carbon[J].Ecological Applications.2001,11:343-355Briske D D,Boutton T W,Wang Z.Contribution of flexible allocation priorities to herbivory tolerance in C4 perennial grasses:An evaluation with C labeling[J].Oecologia.1996,105(2):151-159Kielland K,Bryant J P.Moose herbivory in taiga:Effects on biogeochemistry and vegetation dynamics in primary succession[J].Oikos.1998,82:377-383Ritchie M E,ilman D,Knops J M.Herbivore effects on plant and nitrogen dynamics in oak savanna[J].Ecology.1998,79:165-177Krzic M,Broersma K,Thompson D J,Bomke A A.Soil properties and species diversity of grazed crested wheatgrass and native rangelands[J].Journal of Range Management.2000,53(3):353-358关世英,文沛钦,康师安.不同牧压强度对草地土壤养分含量的影响.草原生态系统研究(第五集).北京:科学出版社,1997:17-22.傅华,陈亚明,周志宇.阿拉善荒漠草地恢复初期植被与土壤环境的变化[J].中国沙漠.2003,23(6):661-664Pei 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,Ecosystems ＆ Environment.2008,124(1):33-39周宁芳,秦宁生,屠其璞,李栋梁.近50年青藏高原地面气温变化的区域特征分析[J].高原气象.2005,24(3):344-349李栋梁,钟海玲,吴青柏,张拥军,候依玲,汤懋苍.青藏高原地表温度的变化分析[J].高原气象.2005,24(3):291-298周秉荣,李凤霞,颜亮东,才仁扎西,耿晓平.高寒沼泽湿地土壤湿度对放牧强度的响应[J].草业科学.2008,25(11):75-78陈佐忠,汪诗平.中国典型草原生态系统.北京:科学出版社,2000:125-156.朱绍宏.牦牛放牧强度对高寒草原植被群落及土壤养分影响的研究.兰州:甘肃农业大学,2006.Holt J A,Bristow K L,McIvor J G.The effects of grazing pressure in soil animals and hydraulic properties of two soils in semi-arid tropical Queensland[J].Australia Journal of Soil Research.1996,34:69-79Greenwood K L,Macleod D A,Hutchinson K J.Long-term stocking rate effects on soil physical properties[J].Australia Journal of Experimental Agriculture.1997,37:413-419Frank A B,Tanaka D L,Hofmann L,Follett R F.Soil carbon and nitrogen of Northern Great Plains grasslands as influenced by long-term grazing[J].Journal of Range Management.1995,48(5):470-474Han G D,Hao X Y,Zhao M L,Wang M J,Ellert B H,Willms W,Wang M J.Effect of grazing intensity on carbon and nitrogen in soil and vegetation in a meadow steppe in Inner Mongolia[J].Agriculture,Ecosystems ＆ Environment.2008,125:21-32Abril A,Bucher E H.Overgrazing and soil carbon dynamics in the western Chaco of Argentina[J].Applied Soil Ecology.2001,16:243-249Percival H J,Parfitt R L,Scott N A.Factors controlling soil carbon levels in New Zealand grassland:Is clay content important[J].Soil Science Society of America Journal.2000,64:1623-1630Reeder J D,Schuman G E.Influence of livestock grazing on C sequestration in semi-arid mixed-grass and shot-grass rangelands[J].Enviromental Pollution.2002,116:457-463Naeth M A,Bailey A W,Pluth D J,Chanasyk D S,Hardin R T.Grazing impacts on litter and soil organic matter in mixed prairie and fescue grassland ecosystems of Alberta[J].Journal of Range Management.1991,44(1):7-12高英志,韩兴国,汪诗平.放牧对草原土壤的影响[J].生态学报.2004,24(4):790-797

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