Seasonal variations in soil respiration and temperature sensitivity under three land-use types in hilly areas of the Sichuan Basin
文献类型：期刊论文
| 作者 | Wang, XiaoGuo1 ; Zhua, Bo1; Gao, MeiRong1; Wang, YanQiang1; Zheng, XunHua2
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| 刊名 | AUSTRALIAN JOURNAL OF SOIL RESEARCH
 |
| 出版日期 | 2008 |
| 卷号 | 46期号:8页码:727-734 |
| 关键词 | soil respiration Q(10) value soil temperature soil moisture |
| ISSN号 | 0004-9573 |
| 通讯作者 | XiaoGuo Wang |
| 英文摘要 | CO(2) emissions from soils were measured under 3 land-use types at the adjacent plots of forest plantation, grassland, and cropland from January 2005 to December 2006. Mean soil CO(2) efflux rates measured during the 2-year study varied from 59 to 527 mg CO(2)/m(2). h in forest plantation, 37 to 498 mg CO(2)/m(2). h in grassland, and 32 to 397 mg CO(2)/m(2). h in cropland. Soil respiration in the 3 types of land-use showed a similar seasonal pattern in variation during both years, in which the single-peaked curve occurred in early summer and the minimum in winter. In particular, the date of maximum soil CO(2) efflux rate in cropland occurred about 30 days earlier than in forest and grassland in both 2005 and 2006. The relationship of soil respiration rate (R) with soil temperature (T) and soil moisture (W) fitted well to the equation R = beta(0)e(beta 1T)W(beta 2) (a, b, c were constants) than other univariate models which consider soil water content or soil temperature alone. Soil temperature and soil moisture together explained 69-92% of the temporal variation in soil respiration in the 3 land-use types. Temperature sensitivity of soil respiration (Q(10)) was affected positively by soil moisture of top 0.1m layer and negatively by soil temperature at 0.05m depth. The relationship between Q(10) values and soil temperature (T) or soil moisture (W) indicated that a 1 degrees C increase in soil temperature at 0.05m depth will reduce the Q(10) value by 0.07, 0.05, and 0.06 in forest, grassland, and cropland, respectively. Similarly, a 1% decrease in soil moisture of the top 0.1m layer will reduce the Q(10) value by 0.10, 0.09, and 0.11 in forest, grassland, and cropland. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | 土壤学 |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | ORGANIC-CARBON CONTENT ; NET PRIMARY PRODUCTIVITY ; CO2 EFFLUX ; METHANE FLUXES ; COSTA-RICA ; FOREST ; MOISTURE ; DEPENDENCE ; VEGETATION ; DIOXIDE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000261286500012 |
| 公开日期 | 2012-09-15 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4201]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm Res, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, XiaoGuo,Zhua, Bo,Gao, MeiRong,et al. Seasonal variations in soil respiration and temperature sensitivity under three land-use types in hilly areas of the Sichuan Basin[J]. AUSTRALIAN JOURNAL OF SOIL RESEARCH,2008,46(8):727-734. |
| APA | Wang, XiaoGuo,Zhua, Bo,Gao, MeiRong,Wang, YanQiang,&Zheng, XunHua.(2008).Seasonal variations in soil respiration and temperature sensitivity under three land-use types in hilly areas of the Sichuan Basin.AUSTRALIAN JOURNAL OF SOIL RESEARCH,46(8),727-734. |
| MLA | Wang, XiaoGuo,et al."Seasonal variations in soil respiration and temperature sensitivity under three land-use types in hilly areas of the Sichuan Basin".AUSTRALIAN JOURNAL OF SOIL RESEARCH 46.8(2008):727-734. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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