Sap flow changes and climatic responses over multiple-year treatment of rainfall exclusion in a sub-humid black locust plantation
文献类型：期刊论文
| 作者 | He, Qiu-Yue1,2; Yan, Mei-Jie2,3; Miyazawa, Yoshiyuki4; Chen, Qiu-Wen1,2; Cheng, Ran-Ran3; Otsuki, Kyoichi5; Yamanaka, Norikazu6; Du, Sheng2,3 |
| 刊名 | FOREST ECOLOGY AND MANAGEMENT
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 457页码:11 |
| ISSN号 | 0378-1127 |
| 关键词 | Black locust Robinia pseudoacacia Rainfall exclusion Sap flow Transpiration Granier-type sensor Drought resistance |
| DOI | 10.1016/j.foreco.2019.117730 |
| 通讯作者 | Du, Sheng(shengdu@ms.iswc.ac.cn) |
| 英文摘要 | Black locust (Robinia pseudoacacia) plantations have been widely established in the semiarid and sub-humid areas of central China. Under the condition of global climate change, which is introducing much uncertainty of precipitation patterns in this region, it is of special significance to investigate their responses to precipitation. Here, we investigated sap flow response to reduced throughfall. Stem sap flow was measured from 2011 to 2017 using Granier-type sensors. By placing waterproof panels within tree rows, about 47.5% precipitation was excluded from treated plots since April 2015. Differences in soil water content gradually increased to 4.3% between treated and control plots with continued throughfall exclusion. Decreased precipitation input significantly reduced the average sap flux density in treated plots by 9.1%-45.3%. The extent of this reduction depended on precipitation in the previous and current years. Transpiration and forest growth were negatively affected by the treatment. Furthermore, sap flow response to environmental factors became insensitive, with the discrepancy increasing with increasing drought duration, but was regained by rainfall recharge to soil water in the first two treatment years. However, prolonged drought might damage transpiration resilience capacity, as the saturated sap flux after soil water recharging during the wet period was still lower than that in the control plot in the latter year. Predawn leaf water potential was significantly lower in the treated plot compared to the control plot, whereas midday leaf water potential was similar. Whole tree hydraulic conductance (G(p)) was also similar between the two plots, except in extreme drought months when G(p) was much lower in the treated plot. In addition, the specific leaf area and stomatal density decreased in the treated plot. Therefore, decreases in precipitation would cause a transpiration reduction, weakening the tree's response to meteorological variables and lowering growth and productivity, potentially damaging transpiration resilience. These results suggest that black locust is sensitive to water changes, its capacity of drought tolerant is restrained by the drought time scale or drought severity, the use of such species in reforestation in semiarid regions should be implemented with caution. |
| WOS关键词 | CARBON-ISOTOPE DISCRIMINATION ; ROBINIA-PSEUDOACACIA L. ; LOESS PLATEAU CHINA ; 2 SLOPE POSITIONS ; ABIES L KARST ; STAND TRANSPIRATION ; SOIL-WATER ; STOMATAL CONDUCTANCE ; VULNERABILITY CURVES ; VOSGES MOUNTAINS |
| 资助项目 | National Natural Science Foundation of China[41471440] ; National Natural Science Foundation of China[41411140035] ; National Key R&D Program of China[2017YFC0504601] ; Japan Society for the Promotion of Science |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000509611900023 |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; Japan Society for the Promotion of Science |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/131285]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Du, Sheng |
| 作者单位 | 1.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Kyushu Univ, Off Campus Planning, Fukuoka 8190395, Japan 5.Kyushu Univ, Kasuya Res Forest, Fukuoka 8112415, Japan 6.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan |
| 推荐引用方式 GB/T 7714 | He, Qiu-Yue,Yan, Mei-Jie,Miyazawa, Yoshiyuki,et al. Sap flow changes and climatic responses over multiple-year treatment of rainfall exclusion in a sub-humid black locust plantation[J]. FOREST ECOLOGY AND MANAGEMENT,2020,457:11. |
| APA | He, Qiu-Yue.,Yan, Mei-Jie.,Miyazawa, Yoshiyuki.,Chen, Qiu-Wen.,Cheng, Ran-Ran.,...&Du, Sheng.(2020).Sap flow changes and climatic responses over multiple-year treatment of rainfall exclusion in a sub-humid black locust plantation.FOREST ECOLOGY AND MANAGEMENT,457,11. |
| MLA | He, Qiu-Yue,et al."Sap flow changes and climatic responses over multiple-year treatment of rainfall exclusion in a sub-humid black locust plantation".FOREST ECOLOGY AND MANAGEMENT 457(2020):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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