巴音布鲁克高寒草原不同退化程度土壤化学计量比特征

doi:10.6048/j.issn.1001-4330.2018.05.020

摘要/Abstract

摘要： 【目的】研究退化草地土壤碳(C)、氮(N)、磷(P)生态化学计量特征的变化规律,为退化草地的恢复治理及草地资源的科学管理提供理论依据。【方法】以巴音布鲁克不同退化阶段(未退化,ND;轻度退化,LD;中度退化,MD;重度退化,HD)高寒草原为对象,采用野外调查和室内分析相结合方法,测定退化草地土壤有机碳、全氮、全磷等养分。【结果】4个不同退化程度草地的土壤C、N、P含量均随土壤深度的增加而减少,其中碳含量在0~10、10~20和20~30 cm土层4个退化程度依次下降了53.0%、54.0%和52.0%,氮、磷含量也依次下降了42.0%~95.0%、29.0%~43.0%(P＜0.05)。0~10、10~20和20~30 cm土层土壤碳氮比在重度退化后达到最低,较未退化分别降低71.0%、75.0%和77.0%(P＜0.05);在20~30 cm土层未退化与轻度退化间差异不显著(P＞0.05);与未退化草地比,重度退化以后0~10、20~30 cm土层氮磷比显著降低了64.0%、59.0%,在轻度退化过程中10~20 cm土层土壤氮磷比要高于未退化(P＜0.05);土壤表层碳氮比、碳磷比和氮磷比与地上生物量呈显著正相关关系(P＜0.05)。土壤C、N、P化学计量比值与地上生物量表现出良好的相关性(P＜0.05)。【结论】巴音布鲁克高寒草原不同退化草地土壤化学计量比明显下降。

关键词: 高寒草原; 退化阶段; 化学计量特征

Abstract: 【Objective】 The study aims to research the change of soil factors under different degradation stages: non-degradation (ND), light-degradation (LD), mid-degradation (MD), heavy-degradation (HD) in alpine steppe of Bayanbulakto and analyze the rules of soil nutrient in the hope of clarifying the soil stoichiometry characteristics, which might provide a reliable scientific basis for the reconstruction and management of grassland degradation.【Method】 Using conventional soil chemical detection method to analyze soil organic matter, soil total nitrogen, total phosphorusl, index in Bayanbulak degraded steppe.【Result】 The soil C , N and P contents of 4 different degraded grasslands decreased by 53.0% , 54.0% and 52.0% , respectively, and the contents of nitrogen and phosphorus decreased by 42.0%-95.0% and 29.0%-43.0% (P＜0.05) . The soil C / N ratio of 0-10 cm, 10-20 cm and 20-30 cm soil layer reached the lowest after severe degradation and decreased by 71.0%, 75.0% and 77.0%, respectively compared with the undegraded soil layer (P <0.05). There was no significant difference between the undegraded and mild degraded soil layers of 20-30 cm (P>0.05). Compared with undegraded grassland, the N / P ratio of 0-10 cm and 20-30 cm soil layer decreased significantly by 64.0% and 59.0% cm after severe degradation. The ratio of nitrogen and phosphorus in 10-20 cm soil layer was higher than that in undegraded soil layer (P<0.05). Soil surface C / N ratio, C / P ratio and N / P ratio were positively correlated with aboveground biomass (P<0.05). P value showed a good correlation with the aboveground biomass scale(P＜0.05).【Conclusion】 Different degradation stages soil stoichiometry characteristics decrease significantly in Bayanbulak alpine steppe.

Key words: alpine steppe; degradation stages; stoichiometry characteristics

中图分类号:

S812

阿依敏·波拉提, 安沙舟, 董乙强, 杨娇, 张爱宁. 巴音布鲁克高寒草原不同退化程度土壤化学计量比特征[J]. 新疆农业科学, 2018, 55(5): 957-965.

Ayimin Bolati,AN Sha-zhou,DONG Yi-qiang,YANG Jiao,ZHANG Ai-ning. Soil Stoichiometry Characteristics in Different Degradation Stages of Alpine Steppe in Bayanbulak[J]. Xinjiang Agricultural Sciences, 2018, 55(5): 957-965.

参考文献 31

[1]	朱进忠.对新疆草业发展的思考(一)[J].新疆农业科学,2006,43(3):195-199.ZHU Jin-zhong.(2006). Discussion on development of prataculture in Xinjiang (1) [J]. Xinjiang Agricultural Sciences,43(3):195-199.(in Chinese)
[2]	王鑫,胡玉昆,热合木都拉·阿迪拉,等.巴音布鲁克高寒草原羊茅(Festuca ovina)群落生态位特征[J].干旱区地理,2009,32(2):255-260.WANG Xin,HU Yu-kun,Rehemudula Adila,et al. (2009). Niche characteristics ofFestuca ovinacommunity in alpine meadow of Bayanbulak [J]. Arid Land Geography, 32(2):255-260.(in Chinese)
[3]	尹伟,胡玉昆,柳妍妍,等.巴音布鲁克不同建植期人草地土壤生物学特性研究[J].草业学报,2010,19(5):218-226.YIN Wei,HU Yu-kun,LIU Yan-yan,et al.(2010). A study on soil biological properties of artificial grassland over different cultivation times in Bayanbulak [J]. Acta Prataculturae Sinica,19(5):218-226.(in Chinese)
[4]	刘洪来,朱进忠,靳瑰丽,等.伊犁绢蒿荒漠草地退化演替序列的划分[J].新疆农业科学,2007,44(2):137-141.LIU Hong-lai,ZHU Jin-zhong,JIN Gui-li,et al.(2007). Division on degraded successional series ofSeriphidium transiliensedesert grassland [J]. Xinjiang Agricultural Sciences,44(2):137-141.(in Chinese)
[5]	朱进忠.对新疆草业发展的思考(二)[J].新疆农业科学,2006,43(4):281-285.ZHU Jin-zhong. (2006). Discussion on development of prataculture in Xinjiang (2) [J]. Xinjiang Agricultural Sciences,43(4):281-285.(in Chinese)
[6]	李玮,郑子成,李廷轩.不同植茶年限土壤团聚体碳氮磷生态化学计量学特征[J].应用生态学报,2015,26(1):9-16.LI Wei,ZHENG Zi-cheng,LI Ting-xuan.(2015). Ecological stoichiometry of soil carbon,nitrogen and phosphorus within soil aggregates in tea plantations with different ages [J]. Chinese Journal of Applied Ecology,26(1):9-16.(in Chinese)
[7]	宋宗水.巴音布鲁克草原生态恢复与综合治理已迫在眉睫[J].中国农业资源与区划,2006,27(1):21-25.SONG Zong-shui.(2006). It is an urgent task to recover & comprehensively manage the grassland ecology of Bayinbuluke [J]. Chinese Journal of Agricultural Resources and Regional Planning,27(1):21-25.(in Chinese)
[8]	Dj, T. J. R. (2003). Use of nitrogen to phosphorus ratios in plant tissue as an indicator of nutrient limitation and nitrogen saturation. Journal of Applied Ecology, 40(3): 523-534.
[9]	李从娟,雷加强,徐新文,等.塔克拉玛干沙漠腹地人工植被及土壤C、N、P的化学计量特征[J].生态学报,2013,33(18):5 760-5 767.LI Cong-juan,LEI Jia-qiang,XU Xin-wen,et al.(2013). The stoichiometric characteristics of C,N,P for artificial plants and soil in the hinterland of Taklimakan Desert [J]. Acta Ecologica Sinica,33(18):5,760-5,767.(in Chinese)
[10]	Hogan, E. J., Minnullina, G., Smith, R. I., & Crittenden, P. D. (2010). Effects of nitrogen enrichment on phosphatase activity and nitrogen : phosphorus relationships in cladonia portentosa. New Phytologist, 186(4): 911-925.
[11]	魏孝荣,邵明安.黄土高原沟壑区小流域坡地土壤养分分布特征[J].生态学报,2007,27(2):603-612.WEI Xiao-rong,SHAO Ming-an.(2007). The distribution of soil nutrients on sloping land in the gully region watershed of the Loess Plateau [J]. Acta Ecologica Sinica,27(2):603-612.(in Chinese)
[12]	李从娟,徐新文,孙永强,等.不同生境下三种荒漠植物叶片及土壤C、N、P的化学计量特征[J].干旱区地理,2014,37(5):996-1 004.LI Cong-juan,XU Xin-wen,SUN Yong-qiang,et al.(2014). Stoichiometric characteristics of C,N,P for three desert plants leaf and soil at different habitats [J]. Arid Land Geography,37(5):996-1,004.(in Chinese)
[13]	王绍强,于贵瑞.生态系统碳氮磷元素的生态化学计量学特征[J].生态学报,2008,28(8):3 937-3 947.WANG Shao-qiang,YU Gui-rui.(2008). Ecological stoichiomtry characteristics of ecosystem carbon,nitrogen and phosphorus elements [J]. Acta Ecolgica Sinica,28(8):3,937-3,947.(in Chinese)
[14]	刘兴诏,周国逸,张德强,等.南亚热带森林不同演替阶段植物与土壤中N、P的化学计量特征[J].植物生态学报,2010,34(1):64-71.LIU Xing-zhao,ZHOU Guo-yi,ZHANG De-qiang,et al.(2010). N and P stoichiometry of plant and soil in lower subtropical forest successional series in southern China [J]. Chinese Journal of Plant Ecology,34(1):64-71.(in Chinese)
[15]	丁小慧,罗淑政,刘金巍,等.呼伦贝尔草地植物群落与土壤化学计量学特征沿经度梯度变化[J].生态学报,2012,32(11):3 467-3 476.DING Xiao-hui,LUO Shu-zheng,LIU Jin-wei,et al.(2012). Longitude gradient changes on plant community and soil stoichiometry characteristics of grassland in Hulunbeir [J]. Acta Ecologica Sinica,32(11):3,467-3,476.(in Chinese)
[16]	唐高溶,郑伟,王祥,等.旅游对喀纳斯景区植被和土壤碳、氮、磷化学计量特征的影响[J].草业科学,2016,36(8):1 476-1 485.TANG Gao-rong,ZHENG Wei,WANG Xiang,et al.(2016). Effects of tourism disturbance on the ecological stoichiometry characteristics of C,N and P of the vegetation and soil in Kanas Scenic Area [J]. Pratacultural Science,36(8):1,476-1,485.(in Chinese)
[17]	付姗,吴琴,尧波,等.南矶湿地土壤碳、氮、磷化学计量比沿水位梯度的分布[J].湿地科学,2015,13(3):374-380.FU Shan,WU Qin,YAO Bo,et al.(2015). Distribution of soil carbon-nitrogen, carbon-phosphorus and nitrogen-phosphorus ratios along water level gradient in Nanji wetlands [J]. Wetland Science,13(3):374-380.(in Chinese)
[18]	张广帅,邓浩俊,杜锟,等.泥石流频发区山地不同海拔土壤化学计量特征-以云南省小江流域为例[J].生态学报,2016,36(3):675-687.ZHANG Guang-shuai,DENG Hao-jun,DU Kun,et al.(2016). Soil stoichiometry characteristics at different elevation gradients of a mountain in an area with high frequency debris flow:a case study in Xiaojiang Watershed,Yunnan [J]. Acta Ecologica Sinica,36(3):675-687.(in Chinese)
[19]	张爱宁,安沙舟,荀其蕾,等.大尤尔都斯高寒草原退化演替序列的划分[J].草业科学,2016,33(10):2 093-2 103.ZHANG Ai-ning,AN Sha-zhou,XUN Qi-lei,at al. (2016). Division degraded succession series of alpine grassland in Big Yourdusi Basin [J]. Pratacultural Science,33(10):2,093-2,103.(in Chinese)
[20]	鲍士旦.土壤农化分析[M].北京:中国农业出版社,2002.BAO Shi-dan. (2002). Soil Agro-chemistrical Analysis[M]. Beijing:China Agricultural Press.(in Chinese)
[21]	伍星,李辉霞,傅伯杰,等.三江源地区高寒草地不同退化程度土壤特征研究[J].中国草地学报,2013,35(3):77-84.WU Xing,LI Hui-xia,FU Bo-jie,et al.(2013). Study on soil characteristics of alpine grassland in different degradation levels in headwater regions of three rivers in China [J]. Chinese Journal of Grassland,35(3):77-84.(in Chinese)
[22]	周翰舒,杨高文,刘楠,等.不同退化程度的草地植被和土壤特征[J].草业科学,2014,30(1):30-38.ZHOU Han-shu,YANG Gao-wen,LIU Nan,et al.(2014). Plant community and soil microbial characteristics in typical grasslands of different degradation degrees [J]. Pratacultural Science,30(1):30-38.(in Chinese)
[23]	字洪标,胡雷,阿的鲁骥,等.不同退化演替阶段高寒草甸群落根土比和土壤理化特征分布格局[J].草地学报,2015,23(6):1 151-1 160.ZI Hong-biao,HU Lei,Adeluji,et al.(2015). Distribution patterns of ratio of root to soil and soil physical chemical characteristics at the different degraded successional stages in an alpine meadow [J]. Acta Agrestia Sinica,23(6):1,151-1,160.(in Chinese)
[24]	Callesen, I., Raulund-Rasmussen, K., Westman, C. J., & Tau-Strand, L. (2007). Nitrogen pools and c:n ratios in well-drained nordic forest soils related to climate and soil texture. Boreal Environment Research, 12(6): 681-692.
[25]	林丽,张法伟,李以康,等.高寒矮嵩草草甸退化过程土壤碳氮储量及C/N化学计量学特征[J].中国草地学报,2012,34(3):42-47.LIN Li,ZHANG FA-wei,LI Yi-kang,et al.(2012). The soil carbon and nitrogen storage and C/N metrological characteristics of chemistry inKobresia humilismeadow in degradation succession stages [J]. Chinese Journal of Grassland,34(3):42-47.(in Chinese)
[26]	罗亚勇,张宇,张静辉,等.不同退化阶段高寒草甸土壤化学计量特征[J].生态学杂志,2012,31(2):254-260.LUO Ya-yong,ZHANG Yu,ZHANG Jing-hui,et al.(2012). Soil stoichiometry characteristics of alpine meadow at its different degradation stages [J]. Chinese Journal of Ecology,31(2):254-260.(in Chinese)
[27]	Rubio, A., & Escudero, A. (2000). Small-scale spatial soil-plant relationship in semi-arid gypsum environments. Plant & Soil, 220(1-2): 139-150.
[28]	侯扶江,南志标,肖金玉,等.重牧退化草地的植被、土壤及其耦合特征[J].应用生态学报,2002,13(8):915-922.HOU Fu-jiang,NAN Zhi-biao,XIAO Jin-yu,et al.(2002). Characteristics of vegetation,soil,and their coupling of degraded grasslands [J]. Chinese Journal of Applied Ecology,13(8):915-922.(in Chinese)
[29]	王德利,吕新民,罗卫生.不同放牧密度对草原退化群落恢复演替的研究[J].1996,20(5):4 449-4 460.WANG De-li,L Xin-min,LUO Wei-sheng.(1996). Analysis to effects of different grazing density on characteristics of rangeland vegetation [J]. Acta Prataculturae Sinica,20(5):4,449-4,460.(in Chinese)
[30]	邓斌.高寒草地不同演替阶段植被变化和土壤碳氮磷的生态化学计量研究[D].兰州:兰州大学硕士论文,2012.DENG Bin.(2012). The study about change of vegetation and C:N:P stoichiometry of soil in different succession stage in alpine grassland[D]. Master Dissertation. Lanzhou University, Lanzhou.(in Chinese)
[31]	周杰.青藏高原高寒草甸冻融退化过程中群落及化学计量特征的研究[D].兰州:兰州大学硕士论文,2013.ZHOU Jie.(2013). The response of plant communities and its ecological stoichiometry of alpine meadow to freeze-thaw degradation Qinghai-Tibetan plateau[D]. Master Dissertation. Lanzhou University, Lanzhou.(in Chinese)