祁连山中段草地土壤有机碳分布特征及其影响因素

doi:10.11733/j.issn.1007-0435.2018.06.006

草地学报 ›› 2018, Vol. 26 ›› Issue (6): 1322-1329.DOI: 10.11733/j.issn.1007-0435.2018.06.006

祁连山中段草地土壤有机碳分布特征及其影响因素

朱猛^1,2, 冯起¹, 张梦旭^1,2, 秦燕燕¹

1. 中国科学院西北生态环境资源研究院内陆河流域生态水文重点实验室, 甘肃兰州 730000;
2. 中国科学院大学, 北京 100049

收稿日期:2018-08-15 修回日期:2018-12-13 出版日期:2018-12-15 发布日期:2019-01-28
通讯作者: 冯起
作者简介:朱猛(1989-),男,安徽颍上人,博士研究生,主要从事干旱区生态系统碳循环研究,E-mail:zhumeng@lzb.ac.cn
基金资助:
国家自然科学基金项目（41771252，41801015）；甘肃省自然科学基金重大项目（18JR4RA002）；中国科学院前沿科学重点研究项目（QYZDJ-SSW-DQC031）；中国科学院西北生态环境资源研究院青年人才成长基金（Y851D31001）；中国科学院寒旱区陆面过程与气候变化重点实验室开放基金（LPCC2017005）资助

Patterns and Influencing Factors of Soil Organic Carbon in Grasslands of the Middle Qilian Mountains

ZHU Meng^1,2, FENG Qi¹, ZHANG Meng-xu^1,2, QIN Yan-yan¹

1. Key Laboratory of Eco-hydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu Province 730000, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-08-15 Revised:2018-12-13 Online:2018-12-15 Published:2019-01-28

摘要/Abstract

摘要： 本文通过调查祁连山中段草地3个海拔段共9条样带，研究了土壤有机碳随海拔、坡向、坡位的分布特征及环境影响因素。结果表明，祁连山中段草地0~60 cm土壤有机碳密度变化范围为9.98~38.96 kg·m^-2，均值为22.31 kg·m^-2。不同海拔间，3 350 m土壤有机碳密度最大，分别是2 900 m和2 450 m处的2.07和3.41倍；在山坡区域，西坡土壤有机碳密度高于南坡和西南坡；沟谷显著高于坡顶和山坡的上、中、下坡位。回归分析表明，土壤有机碳密度与土壤含水量的关系最密切，回归方程的复相关系数（R²）达0.85。一般线性模型表明，地形对0~60 cm土壤有机碳密度空间变异的解释率高达90.68%，其中海拔和坡位分别贡献了71.82%和15.78%。因此，在构建该区草地土壤有机碳储量估算模型时，应重点考虑海拔和坡位因子的指示性。

关键词: 土壤有机碳, 草地, 地形, 祁连山

Abstract: Soil organic carbon (SOC) in alpine grasslands are largely affected by topography-induced variability,which may exert large uncertainties to the regional estimation of SOC stock. In this study,we totally investigated 9 transects within 3 elevation zones in grasslands of the middle Qilian Mountains. The variation of SOC by elevation,slope aspect,and slope position were studied to further explore the relationships between SOC density and environmental factors. Results showed that the SOC at 0~60 cm in grasslands of the middle Qilian Mountains varied from 9.98 to 38.96 kg·m^-2,with an average density of 22.31 kg·m^-2. Among different elevation zones,the highest SOC density occurred at an elevation zone of 3 350 m (37.70 kg·m^-2),which was 2.07 and 3.41 times larger than that at the 2 900 m and 2 450 m,respectively. In sloping areas,SOC density on the west-facing slopes was higher than that on the south- and southwest-facing slopes. SOC density at gully was significantly higher than that at summit and the upper,middle,and lower positions of sloping areas. The regression analysis suggested that SOC density showed the closest relationship with soil water content with the coefficient of determination (R²) close to 0.85. The general linear model suggested that the proportion of the total variation of SOC density explained by topography reached 90.68%,of which 71.82% and 15.78% were attributed to elevation and slope position,respectively. Our results highlighted the importance of topographic factors in shaping the spatial patterns of SOC in grasslands of the middle Qilian Mountains,and suggested that the topographic factors,especially the elevation and slope position,should be given priority in the construction of SOC storage estimation model in grasslands of this region.

Key words: Soil organic carbon, Grasslands, Topography, The Qilian Mountains

中图分类号:

S812.2

朱猛, 冯起, 张梦旭, 秦燕燕. 祁连山中段草地土壤有机碳分布特征及其影响因素[J]. 草地学报, 2018, 26(6): 1322-1329.

ZHU Meng, FENG Qi, ZHANG Meng-xu, QIN Yan-yan. Patterns and Influencing Factors of Soil Organic Carbon in Grasslands of the Middle Qilian Mountains[J]. Acta Agrestia Sinica, 2018, 26(6): 1322-1329.

0
/ / 推荐

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://manu40.magtech.com.cn/Jweb_cdxb/CN/10.11733/j.issn.1007-0435.2018.06.006

https://manu40.magtech.com.cn/Jweb_cdxb/CN/Y2018/V26/I6/1322

参考文献

[1] Stockmann U,Adams M A,Crawford J W,et al. The knowns,known unknowns and unknowns of sequestration of soil organic carbon[J]. Agriculture Ecosystems & Environment,2013,164:80-99
[2] Chen L F,He Z B,Du J,et al. Patterns and controls of soil organic carbon and nitrogen in alpine forests of northwestern China[J]. Forest Science,2015,61(6):1033-1040
[3] Chen L F,He Z B,Du J,et al. Patterns and environmental controls of soil organic carbon and total nitrogen in alpine ecosystems of northwestern China[J]. Catena,2016,137:37-43
[4] Prietzel J,Christophel D. Organic carbon stocks in forest soils of the German Alps[J]. Geoderma,2014,221:28-39
[5] Prietzel J,Zimmermann L,Schubert A,et al. Organic matter losses in German Alps forest soils since the 1970s most likely caused by warming[J]. Nature Geoscience,2016,9(7):543-550
[6] Qin Y,Yi S H,Ding Y J,et al. Effects of small-scale patchiness of alpine grassland on ecosystem carbon and nitrogen accumulation and estimation in northeastern Qinghai-Tibetan Plateau[J]. Geoderma,2018,318:52-63
[7] Zhu M,Feng Q,Qin Y Y,et al. Soil organic carbon as functions of slope aspects and soil depths in a semiarid alpine region of Northwest China[J]. Catena,2017,152:94-102
[8] Lozano-García B,Parras-Alcántara L,Brevik E C. Impact of topographic aspect and vegetation (native and reforested areas) on soil organic carbon and nitrogen budgets in Mediterranean natural areas[J]. Science of the Total Environment,2016,544(8):963-970
[9] Sigua G C,Coleman S W. Spatial distribution of soil carbon in pastures with cow-calf operation:effects of slope aspect and slope position[J]. Journal of Soils and Sediments,2010,10(2):240-247
[10] Pepin N,Bradley R S,Diaz H F,et al. Elevation-dependent warming in mountain regions of the world[J]. Nature Climate Change,2015,5:424-430
[11] 范燕敏,武红旗,孙宗玖,等. 围封对天山北坡荒漠草地土壤有机碳的影响[J]. 草地学报,2014,22(1):65-69
[12] 王穗子,樊江文,刘帅. 中国草地碳库估算差异性综合分析[J]. 草地学报,2017,25(5):905-913
[13] Li Y Y,Wang X Y,Niu Y Y,et al. Spatial distribution of soil organic carbon in the ecologically fragile Horqin Grassland of northeastern China[J]. Geoderma,2018,325:102-109
[14] Chang X X,Zhao W Z,Liu H,et al. Qinghai spruce (Picea crassifolia) forest transpiration and canopy conductance in the upper Heihe River Basin of arid northwestern China[J]. Agricultural and Forest Meteorology,2014,198:209-220
[15] 王金叶,常学向,葛双兰,等. 祁连山(北坡)水热状况与植被垂直分布[J]. 西北林学院学报,2001,16(S1):1-3
[16] Li K R,Wang S Q,Cao M K. Vegetation and soil carbon storage in China[J]. Science in China Series D-Earth Sciences,2004,47(1):49-57
[17] Xie Z B,Zhu J G,Liu G,et al. Soil organic carbon stocks in China and changes from 1980s to 2000s[J]. Global Change Biology,2007,13(9):1989-2007
[18] 方精云,杨元合,马文红,等. 中国草地生态系统碳库及其变化[J]. 中国科学:生命科学,2010,40(7):566-576
[19] Ding J Z,Li F,Yang G B,et al. The permafrost carbon inventory on the Tibetan Plateau:a new evaluation using deep sediment cores[J]. Global Change Biology,2016,22(8):2688-2701
[20] 王根绪,程国栋,沈永平. 青藏高原草地土壤有机碳库及其全球意义[J]. 冰川冻土,2002,24(6):693-700
[21] Liu Z P,Shao M A,Wang Y Q. Effect of environmental factors on regional soil organic carbon stocks across the Loess Plateau region,China[J]. Agriculture Ecosystems & Environment,2011,142:184-194
[22] 安尼瓦尔·买买提,杨元合,郭兆迪,等. 新疆天山中段巴音布鲁克高山草地碳含量及其垂直分布[J]. 植物生态学报,2006,30(4):545-552
[23] 朱猛,刘蔚,秦燕燕,等. 祁连山森林草原带坡面尺度土壤有机碳分布[J]. 中国沙漠,2016,36(3):741-748
[24] Bennie J,Huntley B,Wiltshire A,et al. Slope,aspect and climate:Spatially explicit and implicit models of topographic microclimate in chalk grassland[J]. Ecological Modelling,2008,216(1):47-59
[25] Mccune B,Keon D. Equations for potential annual direct incident radiation and heat load[J]. Journal of Vegetation Science,2002,13(4):603-606
[26] Sun W Y,Zhu H H,Guo S L. Soil organic carbon as a function of land use and topography on the Loess Plateau of China[J]. Ecological Engineering,2015,83:249-257
[27] 林丽,李以康,张法伟,等. 高寒草地土壤有机碳含量同植物功能群数量特征关联度或然性初探[J]. 草地学报,2015,23(1):55-61
[28] 穆少杰,周可新,陈奕兆,等. 草地生态系统碳循环及其影响因素研究进展[J]. 草地学报,2014,22(3):439-447
[29] Wang Y Y,Deng L,Wu G L,et al. Large-scale soil organic carbon mapping based on multivariate modelling:The case of grasslands on the Loess Plateau[J]. Land Degradation & Development,2018,29(1):26-37
[30] Yang Y H,Fang J Y,Tang Y H,et al. Storage,patterns and controls of soil organic carbon in the Tibetan grasslands[J]. Global Change Biology,2008,14(7):1592-1599
[31] Yang Y H,Fang J Y,Ma W H,et al. Soil carbon stock and its changes in northern China's grasslands from 1980s to 2000s[J]. Global Change Biology,2010,16(11):3036-3047

祁连山中段草地土壤有机碳分布特征及其影响因素

Patterns and Influencing Factors of Soil Organic Carbon in Grasslands of the Middle Qilian Mountains

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	金艳霞, 陈哲, 周华坤, 付京晶. 草地生态系统中植被冠层截留的研究进展[J]. 草地学报, 2021, 29(S1): 1-9.
[2]	黄小涛, 姚步青, 马真, 周华坤. 青海高原草地净初级生产力和降水利用效率时空特征[J]. 草地学报, 2021, 29(S1): 19-26.
[3]	杨冲, 王文颖, 刘攀, 周华坤, 索南吉, 刘艳方, 关晋宏. 三江源区不同高寒草地植物矿物元素含量特征及分析[J]. 草地学报, 2021, 29(S1): 52-61.
[4]	赵梦凡, 周秉荣, 赵彤, 周华坤, 校瑞香, 颜亮东, 李璠. 青海省草地植被干旱评估及驱动力分析研究[J]. 草地学报, 2021, 29(S1): 93-103.
[5]	秦海蓉, 陈长成, 胡月明, 王立亚, 肖武, 赵之重, 胡永强, 赵理, 马秉云, 霍俊领, 王福成. 青海省高寒草地土壤侵蚀强度及其空间分布特点[J]. 草地学报, 2021, 29(S1): 104-112.
[6]	姚喜喜, 王立亚, 严振英, 李泉林, 王有彬, 马秉云, 雷延民, 周睿, 谢久祥. 青藏高原典型草地牧草营养品质和消化率特征及其相关性[J]. 草地学报, 2021, 29(S1): 113-120.
[7]	张振华, 刘振杰, 陈白洁, 李以康. 枯落物添加对三江源区退化高寒草甸土壤碳矿化的影响[J]. 草地学报, 2021, 29(S1): 156-164.
[8]	晏和飘, 李文龙, 梁天刚, 周华坤, 曹亚鹏, 廖元成. 青藏高原退化高寒草地恢复对不同措施响应的Meta分析[J]. 草地学报, 2021, 29(S1): 190-198.
[9]	赵树栋, 李建宏. 高原早熟禾根际促生菌分离筛选及特性研究[J]. 草地学报, 2021, 29(9): 1885-1891.
[10]	左郎, 王树森, 马迎梅, 温苏雅勒图, 白刚, 郁鑫明. 火炬树浸提液对两种草坪草种子萌发的影响[J]. 草地学报, 2021, 29(9): 1927-1933.
[11]	王晓芬, 吴玉鑫, 肖海龙, 张格非, 陈建纲, 张德罡. 三江源退化高寒草原植物种间亲和性和土壤团聚体特征[J]. 草地学报, 2021, 29(9): 2001-2009.
[12]	黄家兴, 吴静, 李纯斌, 秦格霞, 钱娟冰, 李怀海. 基于Sentinel-2和Landsat 8数据的天祝县草地地上生物量遥感反演[J]. 草地学报, 2021, 29(9): 2023-2030.
[13]	肖云飞, 陈文业, 王斌杰, 谈嫣蓉, 邴丹珲, 朱丽, 刘鸿源. 祁连山国家级自然保护区土地利用时空变化及与气候因子关系研究[J]. 草地学报, 2021, 29(9): 2049-2057.
[14]	高宏元, 侯蒙京, 葛静, 包旭莹, 李元春, 刘洁, 冯琦胜, 梁天刚, 贺金生, 钱大文. 基于随机森林的高寒草地地上生物量高光谱估算[J]. 草地学报, 2021, 29(8): 1757-1768.
[15]	王明涛, 方江平, 包赛很那, 苗彦军, 王向涛, 赵玉红, 谢文栋, 仓木德吉. 藏北燕麦草地持续利用与撂荒对高寒草甸土壤特征的影响[J]. 草地学报, 2021, 29(8): 1801-1808.