Characteristics and modelling of sap flow of degraded Populus simonii in areas where the ecology is vulnerable
文献类型：期刊论文
| 作者 | Dai, Junjie1,2,3; Zhao, Ying1,2,3; Wang, Li1,3,4 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2022-10-11 |
| 页码 | 13 |
| ISSN号 | 1085-3278 |
| 关键词 | degradation drought modified Jarvis-Stewart model plantation the Loess Plateau transpiration |
| DOI | 10.1002/ldr.4474 |
| 通讯作者 | Wang, Li(wangli5208@nwsuaf.edu.cn) |
| 英文摘要 | Plant transpiration plays a crucial role in the water balance of forest stands and water yield in arid and semiarid ecosystems. However, our understanding of the characteristics and modeling of transpiration or sap flow of degraded plantations in vulnerable ecology areas is still limited. In this study, the sap flow velocity (SF) of Populus simonii under different categories of degradation (LD, lightly degraded; MD, moderately degraded; SD, seriously degraded) during the growing season in the water-wind erosion crisscross region of the Chinese Loess Plateau was continuously monitored and estimated using the modified Jarvis-Stewart (MJS), modified process-based (MBTA) and multiple linear regression (MLR) models. We found that the daily SF of P. simonii under the three categories of degradation was significantly different (p < 0.05), and degradation degree was negatively correlated with SF. Soil water deficit significantly reduced SF (p < 0.05). Soil water conditions and P. simonii degradation change the peak time of SF rather than the startup time. Three models give good performance for simulating the daily SF of degraded P. simonii, especially the MJS model. The stress of vapour pressure deficit (VPD) on SF first decreases and then increases with increasing VPD, and the VPD threshold is LD < MD < SD. The results provide a valuable reference for revealing the causes of degradation and assessing the drought resistance of plantation ecosystems in water-limited areas. |
| WOS关键词 | STAND-SCALE TRANSPIRATION ; JARVIS-STEWART MODEL ; SOIL-MOISTURE ; LOESS PLATEAU ; CANOPY ; VEGETATION ; CATCHMENT ; MORTALITY ; REGION ; LEAF |
| 资助项目 | National Natural Science Foundation of China[42171043] ; National Natural Science Foundation of China[41977012] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000865740100001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/185642]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Li |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci & Minist Educ, Res Ctr Soil & Water Conservat & Ecol Environm, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Junjie,Zhao, Ying,Wang, Li. Characteristics and modelling of sap flow of degraded Populus simonii in areas where the ecology is vulnerable[J]. LAND DEGRADATION & DEVELOPMENT,2022:13. |
| APA | Dai, Junjie,Zhao, Ying,&Wang, Li.(2022).Characteristics and modelling of sap flow of degraded Populus simonii in areas where the ecology is vulnerable.LAND DEGRADATION & DEVELOPMENT,13. |
| MLA | Dai, Junjie,et al."Characteristics and modelling of sap flow of degraded Populus simonii in areas where the ecology is vulnerable".LAND DEGRADATION & DEVELOPMENT (2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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