Arid
DOI10.1016/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
ISSN1470-160X
EISSN1872-7034
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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