Hydraulics play an important role in causing low growth rate and dieback of aging Pinus sylvestris var. mongolica trees in plantations of Northeast China
文献类型：期刊论文
| 作者 | Liu, Yan-Yan1,2,3; Wang, Ai-Ying1,2; An, Yu-Ning4; Lian, Pei-Yong5; Wu, De-Dong4; Zhu, Jiao-Jun1; Meinzer, Frederick C.6; Hao, Guang-You1 |
| 刊名 | PLANT CELL AND ENVIRONMENT
 |
| 出版日期 | 2018-07-01 |
| 卷号 | 41期号:7页码:1500-1511 |
| 关键词 | Cavitation Embolism Forest Decline Hydraulic Failure Hydraulic Limitation Tree Mortality Xylem |
| ISSN号 | 0140-7791 |
| DOI | 10.1111/pce.13160 |
| 英文摘要 | The frequently observed forest decline in water-limited regions may be associated with impaired tree hydraulics, but the precise physiological mechanisms remain poorly understood. We compared hydraulic architecture of Mongolian pine (Pinus sylvestris var. mongolica) trees of different size classes from a plantation and a natural forest site to test whether greater hydraulic limitation with increasing size plays an important role in tree decline observed in the more water-limited plantation site. We found that trees from plantations overall showed significantly lower stem hydraulic efficiency. More importantly, plantation-grown trees showed significant declines in stem hydraulic conductivity and hydraulic safety margins as well as syndromes of stronger drought stress with increasing size, whereas no such trends were observed at the natural forest site. Most notably, the leaf to sapwood area ratio (LA/SA) showed a strong linear decline with increasing tree size at the plantation site. Although compensatory adjustments in LA/SA may mitigate the effect of increased water stress in larger trees, they may result in greater risk of carbon imbalance, eventually limiting tree growth at the plantation site. Our results provide a potential mechanistic explanation for the widespread decline of Mongolian pine trees in plantations of Northern China. |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000435808900003 |
| 出版者 | WILEY |
| 源URL | [http://210.72.129.5/handle/321005/106521]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 通讯作者 | Hao, Guang-You |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110164, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangxi Teachers Educ Univ, Minist Educ, Key Lab Environm Change & Resources Use Beibu Gul, 175 Mingxiu East Rd, Nanning 530001, Peoples R China 4.Inst Sand Fixat & Silviculture, Fuxing 123000, Liaoning, Peoples R China 5.Daxinganling Acad Forest Sci Inner Mongolia, Yakeshi 022150, Peoples R China 6.US Forest Serv, Pacific Northwest Res Stn, USDA, Corvallis, OR 97331 USA |
| 推荐引用方式 GB/T 7714 | Liu, Yan-Yan,Wang, Ai-Ying,An, Yu-Ning,et al. Hydraulics play an important role in causing low growth rate and dieback of aging Pinus sylvestris var. mongolica trees in plantations of Northeast China[J]. PLANT CELL AND ENVIRONMENT,2018,41(7):1500-1511. |
| APA | Liu, Yan-Yan.,Wang, Ai-Ying.,An, Yu-Ning.,Lian, Pei-Yong.,Wu, De-Dong.,...&Hao, Guang-You.(2018).Hydraulics play an important role in causing low growth rate and dieback of aging Pinus sylvestris var. mongolica trees in plantations of Northeast China.PLANT CELL AND ENVIRONMENT,41(7),1500-1511. |
| MLA | Liu, Yan-Yan,et al."Hydraulics play an important role in causing low growth rate and dieback of aging Pinus sylvestris var. mongolica trees in plantations of Northeast China".PLANT CELL AND ENVIRONMENT 41.7(2018):1500-1511. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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