Variations in carbon-decomposition enzyme activities respond differently to land use change in central China
文献类型：期刊论文
| 作者 | Zhang, Qian1,2; Feng, Jiao1; Wu, Junjun1; Zhang, Dandan1,2; Chen, Qiong1,2; Li, Qianxi1; Long, Chunyang1,2; Feyissa, Adugna1,2; Cheng, Xiaoli1,3 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2019-02-28 |
| 卷号 | 30期号:4页码:459-469 |
| 关键词 | hydrolase land use change oxidase soil organic carbon specific enzyme activities |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.3240 |
| 英文摘要 | The turnover of soil organic carbon (SOC) is primarily regulated by extracellular enzymes secreted by the microorganism. However, how soil C-decomposition enzymes respond to different land use change remains unclear. Here, we conducted a study to explore seasonal variations in C-decomposition enzyme activities including hydrolases (alpha-glucosidase, beta-glucosidase, cellobiohydrolase, and beta-xylosidase) and oxidases (polyphenol oxidase and peroxidase) in woodland, shrubland, cropland, and adjacent uncultivated soils in central China. Soil dissolved organic C (DOC), SOC, labile C (LC), recalcitrant C (RC), soil C recalcitrance index (RIC: RC/SOC ratio), pH, soil moisture, and temperature were also investigated. Both afforested and cropland averaged higher hydrolase and oxidase activities compared with the uncultivated land, with higher levels of enzyme activities in topsoils than deep soils. By comparing with the uncultivated land, higher hydrolytic enzyme activities in afforested soils were mainly attributed to higher DOC and LC contents, whereas higher hydrolase activities in cropland soils were possibly due to lower C:nitrogen (N) ratios and agricultural disturbance (i.e., fertilization and tillage). In contrast, two oxidases activities were the highest in the cropland, which might be attributed to higher RIC and lower C:N ratio. Cropland soils also averaged higher specific enzyme activities (i.e., enzyme activities per unit of SOC) compared with the afforested land, indicating fast C turnover rates in cropland. Seasonal variations in soil enzyme activities were primarily driven by soil temperature and pH. Overall, our results reveal the different underlying mechanisms between hydrolases and oxidases in response to types of land use change. |
| 资助项目 | Strategic Priority Research Program B of the Chinese Academy of Sciences[XDB15010200] ; National Natural Science Foundation of China[31770563] ; National Natural Science Foundation of China[31470557] ; National Natural Science Foundation of China[31700461] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000458674300009 |
| 出版者 | WILEY |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/6929]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Cheng, Xiaoli |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650091, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qian,Feng, Jiao,Wu, Junjun,et al. Variations in carbon-decomposition enzyme activities respond differently to land use change in central China[J]. LAND DEGRADATION & DEVELOPMENT,2019,30(4):459-469. |
| APA | Zhang, Qian.,Feng, Jiao.,Wu, Junjun.,Zhang, Dandan.,Chen, Qiong.,...&Cheng, Xiaoli.(2019).Variations in carbon-decomposition enzyme activities respond differently to land use change in central China.LAND DEGRADATION & DEVELOPMENT,30(4),459-469. |
| MLA | Zhang, Qian,et al."Variations in carbon-decomposition enzyme activities respond differently to land use change in central China".LAND DEGRADATION & DEVELOPMENT 30.4(2019):459-469. |
入库方式： OAI收割
来源：武汉植物园
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