Temperature sensitivity of soil respiration to nitrogen and phosphorous fertilization: Does soil initial fertility matter?
文献类型：期刊论文
| 作者 | Sun, Qiqi1,2; Wang, Rui3 ; Wang, Ying1,2; Du, Lanlan4; Zhao, Man3; Gao, Xin4; Hu, Yaxian4; Guo, Shengli1,2,3
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| 刊名 | GEODERMA
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| 出版日期 | 2018-09-01 |
| 卷号 | 325页码:172-182 |
| 关键词 | Soil fertility NP fertilization Q(10) Soil respiration |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2018.04.001 |
| 通讯作者 | Guo, Shengli(slguo@ms.iswc.ac.cn) |
| 英文摘要 | Temperature sensitivity of soil respiration (Q(10)) is an important parameter when modeling the effects of global warming on terrestrial ecosystem carbon release. Widely applied chemical fertilizers can significantly affect soil productivity and carbon cycling in agroecosystems. However, little is known about how Q(10) responds to chemical fertilization under different levels of initial soil fertility. On the Chinese Loess Plateau, changes in soil respiration rates and Q(10) were investigated in soils of two fertility levels: low fertility (L) and high fertility (H). For each soil fertility level, there was one control plot and one chemical fertilized plot (+ NP), which in total formed four treatments: L, L + NP, H and H + NP. All the treatments were replicated for three times on a continuous winter wheat cropping system. Respiration rates of surface soil in each treatment were in situ monitored from October 2010 through September 2015. Our results showed that after NP fertilization, soil respiration rates were increased by 46% in low fertility soil, yet only by 14% in high fertility soil (P < 0.05). The Q(10) after NP fertilization was significantly decreased by 6.9% in low fertility soil, but was unchanged in the high fertility soil. The Q(10) variation might be attributed to the different response of microbial respiration Q(10) in the two soils. The decreased Q(10) with NP fertilization in the low fertility soil was possibly due to N-induced increase of substrate quality for soil microbes and increased activities of both cellobiohydrolase and polyphenol oxidase. In the high fertility soil, the unchanged Q(10 )with NP fertilization may be the integrated result of less affected substrate quality and neutral response of polyphenol oxidase activity. Overall, our results suggested that the effects of NP fertilization on soil respiration and its temperature sensitivity varied with soil initial fertility levels, and therefore must be properly accounted for when estimating potential effects of local agricultural management to regional agroecosystems under future climate conditions. |
| WOS关键词 | LONG-TERM NITROGEN ; LOESS PLATEAU ; ORGANIC-MATTER ; HETEROTROPHIC RESPIRATION ; MICROBIAL RESPIRATION ; CARBON DECOMPOSITION ; SEMIARID GRASSLAND ; ROOT RESPIRATION ; ENZYME-ACTIVITY ; CLIMATE-CHANGE |
| 资助项目 | Natural Science Foundation of China[41371279] ; Natural Science Foundation of China[41301322] ; Chinese Universities Scientific Fund[2014YB055] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000432499000017 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Natural Science Foundation of China ; Chinese Universities Scientific Fund |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/54834]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Guo, Shengli |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shannxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shannxi, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Qiqi,Wang, Rui,Wang, Ying,et al. Temperature sensitivity of soil respiration to nitrogen and phosphorous fertilization: Does soil initial fertility matter?[J]. GEODERMA,2018,325:172-182. |
| APA | Sun, Qiqi.,Wang, Rui.,Wang, Ying.,Du, Lanlan.,Zhao, Man.,...&Guo, Shengli.(2018).Temperature sensitivity of soil respiration to nitrogen and phosphorous fertilization: Does soil initial fertility matter?.GEODERMA,325,172-182. |
| MLA | Sun, Qiqi,et al."Temperature sensitivity of soil respiration to nitrogen and phosphorous fertilization: Does soil initial fertility matter?".GEODERMA 325(2018):172-182. |
入库方式： OAI收割
来源：地理科学与资源研究所
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