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Changes of soil organic and inorganic carbon in relation to grassland degradation in Northern Tibet
Liu, Shuli1,2; Tang, Yanhong3,4; Zhang, Fawei1; Du, Yangong1; Lin, Li1; Li, Yikang1; Guo, Xiaowei1; Li, Qian1; Cao, Guangmin1
2017-05-01
发表期刊ECOLOGICAL RESEARCH
卷号32期号:3页码:395-404
文章类型Article
摘要The effect of livestock grazing on grassland degradation and the resulting impact on soil carbon concentration is an important factor in carbon estimation. We addressed this issue using field observations and laboratory analysis of samples from Tibetan grassland. Based on the field measurements, we investigated the soil organic carbon (SOC) and soil inorganic carbon (SIC) under two contrasting degradation states: lightly or non-degraded grasslands (LDG) and heavily degraded grasslands (HDG). We assessed their relationships with environmental factors using data collected from 99 sites across Northern Tibet during 2011-2012. Data were analyzed using a linear mixed-effects model and one-way ANOVA. The results showed that: (1) SOC concentration decreased and SIC concentration increased following grassland degradation, especially at soil depths in the range of 0-10 cm (P < 0.05); (2) the major environmental factors affecting SOC and SIC were soil pH and plant biomass; (3) spatially, the SOC density increased with the mean annual temperature and mean annual precipitation, whereas SIC exhibited the opposite trend; (4) the SOC density increased at first and then decreased with increasing grazing intensity, with an opposite trend in SIC; and (5) soil carbon storage in this region was 0.14 Pg smaller in the HDG than in the LDG. This study suggests that grassland degradation can significantly affect the vertical distribution and storage of SOC and SIC. The carbon sequestration capacity of the top 100 cm of soil in Northern Tibet was estimated as 0.14 Pg.
关键词Soil Carbon Grassland Degradation Carbon Storage Northern Tibet
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11284-017-1447-2
关键词[WOS]QINGHAI PROVINCE ; LAND DEGRADATION ; CLIMATE-CHANGE ; ALPINE MEADOW ; CO2 EMISSIONS ; CHINA ; STORAGE ; SEQUESTRATION ; PLATEAU ; MANAGEMENT
收录类别SCI
语种英语
项目资助者National Natural Science Foundation of China(41030105) ; "Strategic Priority Research Program-Climate Change: Carbon Budget, Related Issues" of the Chinese Academy of Sciences(XDA05050404) ; Ministry of the Environment, Japan
WOS研究方向Environmental Sciences & Ecology
WOS类目Ecology
WOS记录号WOS:000399834600011
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/7066
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, Northwest Inst Plateau Biol, 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China
2.Jiangxi Normal Univ, Sch Life Sci, 99 Ziyang Rd, Nanchang 330022, Jiangxi, Peoples R China
3.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
4.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
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GB/T 7714
Liu, Shuli,Tang, Yanhong,Zhang, Fawei,et al. Changes of soil organic and inorganic carbon in relation to grassland degradation in Northern Tibet[J]. ECOLOGICAL RESEARCH,2017,32(3):395-404.
APA Liu, Shuli.,Tang, Yanhong.,Zhang, Fawei.,Du, Yangong.,Lin, Li.,...&Cao, Guangmin.(2017).Changes of soil organic and inorganic carbon in relation to grassland degradation in Northern Tibet.ECOLOGICAL RESEARCH,32(3),395-404.
MLA Liu, Shuli,et al."Changes of soil organic and inorganic carbon in relation to grassland degradation in Northern Tibet".ECOLOGICAL RESEARCH 32.3(2017):395-404.
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