Sap flow characteristics and responses to summer rainfall for Pinus tabulaeformis and Hippophae rhamnoides in the Loess hilly region of China
文献类型：期刊论文
| 作者 | Tang, Yakun1; Wen, Jie2; Xie, Yuli3,4; Lu, Senbao2; Chen, YM (reprint author), Chinese Acad Sci, Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Land Farming Loess, Yangling, Shaanxi, Peoples R China.; Wu, Xu3,4; Chen, Yunming1,4 |
| 刊名 | ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:1页码:617-630 |
| ISSN号 | 2045-7758 |
| 关键词 | Anisohydric Hippophae Rhamnoides Isohydric Pinus Tabulaeformis Sap Flow |
| DOI | 10.1002/ece3.3639 |
| 文献子类 | Article |
| 英文摘要 | As a major driving element of the structure and function of arid and semiarid ecosystems, rainfall is the essential factor limiting plant biological processes. To clarify the characteristics of transpiration and responses to summer rainfall, sap flow density (F-d) of Pinus tabulaeformis and Hippophae rhamnoides was monitored using thermal dissipation probes. In addition, midday leaf water potential (psi(m)) and leaf stomatal conductance (G(s)) were also analyzed to determine water use strategies. The results indicated that the diurnal variation in the normalized F-d values exhibited a single-peak curve for P.tabulaeformis, while H.rhamnoides showed multiple peaks. The normalized F-d for P.tabulaeformis remained relatively stable regardless of rainfall events. However, there was also a significant increase in the normalized F-d for H.rhamnoides in response to rainfall in June and August (p < .05), although no significant differences were observed in July. The normalized F-d values for P.tabulaeformis and H.rhamnoides fitted well with the derived variable of transpiration, an integrated index calculated from the vapor pressure deficit and solar radiation (R-s), using an exponential saturation function. The differences in fitting coefficients suggested that H.rhamnoides showed more sensitivity to summer rainfall (p < .01) than P.tabulaeformis. Furthermore, during the study period, P.tabulaeformis reduced G(s) as soil water decreased, maintaining a relatively constant psi(m); while H.rhamnoides allowed large fluctuations in (m) to maintain G(s). Therefore, P.tabulaeformis and H.rhamnoides should be considered isohydric and anisohydric species, respectively. And more consideration should be taken for H.rhamnoides in the afforestation activities and the local plantation management under the context of the frequently seasonal drought in the loess hilly region. |
| 学科主题 | Ecology ; Evolutionary Biology |
| 出版地 | 111 RIVER ST, HOBOKEN 07030-5774, NJ USA |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000419483200053 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7859]  |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Chen, YM (reprint author), Chinese Acad Sci, Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Land Farming Loess, Yangling, Shaanxi, Peoples R China. |
| 作者单位 | 1.Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 2.Northwest Agr & Forestry Univ, Coll Forestry, Yangling, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Land Farming Loess, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Yakun,Wen, Jie,Xie, Yuli,et al. Sap flow characteristics and responses to summer rainfall for Pinus tabulaeformis and Hippophae rhamnoides in the Loess hilly region of China[J]. ECOLOGY AND EVOLUTION,2018,8(1):617-630. |
| APA | Tang, Yakun.,Wen, Jie.,Xie, Yuli.,Lu, Senbao.,Chen, YM .,...&Chen, Yunming.(2018).Sap flow characteristics and responses to summer rainfall for Pinus tabulaeformis and Hippophae rhamnoides in the Loess hilly region of China.ECOLOGY AND EVOLUTION,8(1),617-630. |
| MLA | Tang, Yakun,et al."Sap flow characteristics and responses to summer rainfall for Pinus tabulaeformis and Hippophae rhamnoides in the Loess hilly region of China".ECOLOGY AND EVOLUTION 8.1(2018):617-630. |
入库方式： OAI收割
来源：水土保持研究所
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