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	Variation in soil organic matter accumulation and metabolic activity along an elevation gradient in the Santa Rosa Mountains of Southern California, USA
	Chatterjee Amitava; Jenerette George D
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2015
卷号	7 期号:6 页码:814-819
英文摘要	Variations in soil organic matter accumulation across an elevation can be used to explain the control of substrate supply and variability on soil metabolic activity. We investigated geographic changes in soil organic matter and metabolic rates along an elevation gradient (289-2,489 m) in the Santa Rosa Mountains, California, USA from subalpine and montane pine forests through chaparral to desert. From base (289 m) to summit (2,489 m), 24 sites were established for collecting soil samples under canopies and inter-canopy spaces, at 0-5 and 5-15 cm soil depths increments. Soil organic matter (SOM) content was determined using weight loss on ignition at 550°C and soil CO_2 efflux (R) was measured at day 5 (R_5) and day 20 (R_(20)) of incubation. Changes in SOM content along the elevation gradient showed a significant relationship (P<0.05) but R_5 and R_(20) were not related to either elevation or SOM content. However, the ratio of R and SOM (R_5/SOM) showed a strong relationship across the mountains at both soil depths. R_5/SOM, as an indicator of carbon use efficiency, may be applicable to other semi-arid transects at larger scale modeling of soil metabolic processes.
英文关键词	elevation gradient soil organic matter CO2 efflux metabolic activity
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5524750
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335550
作者单位	Chatterjee Amitava, Department of Soil Science, North Dakota State University, Fargo, 58108-6050, USA.; Jenerette George D, Department of Botany and Plant Sciences, University of California, Riverside, 92521, USA.
推荐引用方式 GB/T 7714	Chatterjee Amitava,Jenerette George D. Variation in soil organic matter accumulation and metabolic activity along an elevation gradient in the Santa Rosa Mountains of Southern California, USA[J],2015,7(6):814-819.
APA	Chatterjee Amitava,&Jenerette George D.(2015).Variation in soil organic matter accumulation and metabolic activity along an elevation gradient in the Santa Rosa Mountains of Southern California, USA.Journal of Arid Land,7(6),814-819.
MLA	Chatterjee Amitava,et al."Variation in soil organic matter accumulation and metabolic activity along an elevation gradient in the Santa Rosa Mountains of Southern California, USA".Journal of Arid Land 7.6(2015):814-819.