Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.ecolind.2013.06.028 |
Influence of management and precipitation on carbon fluxes in great plains grasslands | |
Rigge, Matthew1; Wylie, Bruce2; Zhang, Li3; Boyte, Stephen P.4 | |
通讯作者 | Rigge, Matthew |
来源期刊 | ECOLOGICAL INDICATORS
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ISSN | 1470-160X |
EISSN | 1872-7034 |
出版年 | 2013 |
卷号 | 34页码:590-599 |
英文摘要 | Suitable management and sufficient precipitation on grasslands can provide carbon sinks. The net carbon accumulation of a site from the atmosphere, modeled as the Net Ecosystem Productivity (NEP), is a useful means to gauge carbon balance. Previous research has developed methods to integrate flux tower data with satellite biophysical datasets to estimate NEP across large regions. A related method uses the Ecosystem Performance Anomaly (EPA) as a satellite-derived indicator of disturbance intensity (e.g., livestock stocking rate, fire, and insect damage). To better understand the interactions among management, climate, and carbon dynamics, we evaluated the relationship between EPA and NEP data at the 250 m scale for grasslands in the Central Great Plains, USA (ranging from semi-arid to mesic). We also used weekly estimates of NEP to evaluate the phenology of carbon dynamics, classified by EPA (i.e., by level of disturbance impact). Results show that the cumulative carbon balance over these grasslands from 2000 to 2008 was a weak net sink of 13.7 g C m(-2) yr(-1). Overall, NEP increased with precipitation (R-2 = 0.39, P < 0.05) from west to east. Disturbance influenced NEP phenology; however, climate and biophysical conditions were usually more important. The NEP response to disturbance varies by ecoregion, and more generally by grassland type, where the shortgrass prairie NEP is most sensitive to disturbance, the mixed-grass prairie displays a moderate response, and tallgrass prairie is the least impacted by disturbance (as measured by EPA). Sustainable management practices in the tallgrass and mixed-grass prairie may potentially induce a period of average net carbon sink until a new equilibrium soil organic carbon is achieved. In the shortgrass prairie, management should be considered sustainable if carbon stocks are simply maintained. The consideration of site carbon balance adds to the already difficult task of managing grasslands appropriately to site conditions. Results clarify the seasonal and interannual dynamics of NEP, specifically the influence of disturbance and moisture availability. (c) 2013 Elsevier Ltd. All rights reserved. |
英文关键词 | Grasslands Carbon balance Net ecosystem productivity Ecosystem performance Grazing Phenology |
类型 | Article |
语种 | 英语 |
国家 | USA ; Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000323860700062 |
WOS关键词 | PLATTE RIVER-BASIN ; MIXED-GRASS ; SOIL CARBON ; CO2 FLUX ; SEQUESTRATION ; RANGELANDS ; DYNAMICS ; NITROGEN ; NDVI |
WOS类目 | Biodiversity Conservation ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/176734 |
作者单位 | 1.Arctic Slope Reg Corp Res & Technol Solut, Sioux Falls, SD 57198 USA; 2.US Geol Survey, Earth Resources Observat & Sci Ctr, Sioux Falls, SD 57198 USA; 3.Chinese Acad Sci, Ctr Earth Observat & Digital Earth, Key Lab Digital Earth, Beijing 100094, Peoples R China; 4.Stinger Ghaffarian Technol Inc, Sioux Falls, SD 57198 USA |
推荐引用方式 GB/T 7714 | Rigge, Matthew,Wylie, Bruce,Zhang, Li,et al. Influence of management and precipitation on carbon fluxes in great plains grasslands[J]. United States Geological Survey,2013,34:590-599. |
APA | Rigge, Matthew,Wylie, Bruce,Zhang, Li,&Boyte, Stephen P..(2013).Influence of management and precipitation on carbon fluxes in great plains grasslands.ECOLOGICAL INDICATORS,34,590-599. |
MLA | Rigge, Matthew,et al."Influence of management and precipitation on carbon fluxes in great plains grasslands".ECOLOGICAL INDICATORS 34(2013):590-599. |
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