Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1371/journal.pone.0146757 |
Dynamics of Soil Organic Carbon and Aggregate Stability with Grazing Exclusion in the Inner Mongolian Grasslands | |
Wen, Ding1,2; He, Nianpeng1; Zhang, Jinjing3 | |
通讯作者 | He, Nianpeng |
来源期刊 | PLOS ONE |
ISSN | 1932-6203 |
出版年 | 2016 |
卷号 | 11期号:1 |
英文摘要 | Grazing exclusion (GE) has been deemed as an important approach to enhance the soil carbon storage of semiarid grasslands in China; however, it remains unclear how different organic carbon (OC) components in soils vary with the duration of GE. Here, we observed the changing trends of different OC components in soils with increased GE duration in five grassland succession series plots, ranging from free grazing to 31-year GE. Specifically, we measured microbial biomass carbon (MBC), easily oxidizable OC (EOC), water-soluble OC (WSOC), and OC in water stable aggregates (macroaggregates [250-2000 mu m], microaggregates [53-250 mu m], and mineral fraction [< 53 mu m]) at 0-20 cm soil depths. The results showed that GE significantly enhanced EOC and WSOC contents in soils, but caused a decline of MBC at the three decade scale. Macroaggregate content (F = 425.8, P < 0.001), OC stored in macroaggregates (F = 84.1, P < 0.001), and the mean weight diameter (MWD) of soil aggregates (F = 371.3, P < 0.001) increased linearly with increasing GE duration. These findings indicate that OC stored in soil increases under three-decade GE with soil organic matter (SOM) stability improving to some extent. Long-term GE practices enhance the formation of soil aggregates through higher SOM input and an exclusion of animal trampling. Therefore, the practice of GE may be further encouraged to realize the soil carbon sequestration potential of semi-arid grasslands, China. |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000367888100147 |
WOS关键词 | MANAGEMENT-INDUCED CHANGES ; LAND-USE CHANGE ; MATTER FRACTIONS ; SEMIARID STEPPE ; EARLY INDICATORS ; NITROGEN ; STORAGE ; SEQUESTRATION ; STABILIZATION ; SATURATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
来源机构 | 中国科学院地理科学与资源研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/195584 |
作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Jilin Agr Univ, Coll Resource & Environm Sci, Changchun 130118, Peoples R China |
推荐引用方式 GB/T 7714 | Wen, Ding,He, Nianpeng,Zhang, Jinjing. Dynamics of Soil Organic Carbon and Aggregate Stability with Grazing Exclusion in the Inner Mongolian Grasslands[J]. 中国科学院地理科学与资源研究所,2016,11(1). |
APA | Wen, Ding,He, Nianpeng,&Zhang, Jinjing.(2016).Dynamics of Soil Organic Carbon and Aggregate Stability with Grazing Exclusion in the Inner Mongolian Grasslands.PLOS ONE,11(1). |
MLA | Wen, Ding,et al."Dynamics of Soil Organic Carbon and Aggregate Stability with Grazing Exclusion in the Inner Mongolian Grasslands".PLOS ONE 11.1(2016). |
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