Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees
Abstract Background Climate change associated with droughts has led to widespread forest decline. Hydraulic and carbon-related performances are key physiological processes for the tolerance of trees to environmental changes, yet our current understanding of such physiological performances for forest...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | Ecological Processes |
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| Online Access: | https://doi.org/10.1186/s13717-024-00567-9 |
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| author | Huanhuan Song Tianyu Zhong Jianxiao Zhu Tao Yan |
| author_facet | Huanhuan Song Tianyu Zhong Jianxiao Zhu Tao Yan |
| author_sort | Huanhuan Song |
| collection | DOAJ |
| description | Abstract Background Climate change associated with droughts has led to widespread forest decline. Hydraulic and carbon-related performances are key physiological processes for the tolerance of trees to environmental changes, yet our current understanding of such physiological performances for forest decline is still limited. Here, we investigated the hydraulic and carbohydrate performances of healthy and declining (canopy dieback) trees in temperate larch (Larix principis-rupprechtii) plantations. Results Relative to healthy trees, the higher native percentage loss of xylem hydraulic conductivity and lower xylem hydraulic conductivity indicated a deterioration of the integrity of the hydraulic system in declining trees. Additionally, the comparable Huber value, intrinsic water-use efficiency, and leaf mass per area between healthy and declining trees suggest a relatively profligate water-use strategy by declining trees. Declining trees had lower nonstructural carbohydrate concentrations in leaves, branches, and twigs but higher soluble sugars concentration in fine roots than conspecific healthy trees. Conclusions Overall, declining trees in larch plantations would be more vulnerable to drought due to the higher risk of hydraulic dysfunction and carbohydrate depletion. |
| format | Article |
| id | doaj-art-10edce521ff348fa989f0e82df22180b |
| institution | Kabale University |
| issn | 2192-1709 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Ecological Processes |
| spelling | doaj-art-10edce521ff348fa989f0e82df22180b2025-01-05T12:08:47ZengSpringerOpenEcological Processes2192-17092025-01-0114111010.1186/s13717-024-00567-9Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii treesHuanhuan Song0Tianyu Zhong1Jianxiao Zhu2Tao Yan3State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou UniversityState Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou UniversityState Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou UniversityState Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou UniversityAbstract Background Climate change associated with droughts has led to widespread forest decline. Hydraulic and carbon-related performances are key physiological processes for the tolerance of trees to environmental changes, yet our current understanding of such physiological performances for forest decline is still limited. Here, we investigated the hydraulic and carbohydrate performances of healthy and declining (canopy dieback) trees in temperate larch (Larix principis-rupprechtii) plantations. Results Relative to healthy trees, the higher native percentage loss of xylem hydraulic conductivity and lower xylem hydraulic conductivity indicated a deterioration of the integrity of the hydraulic system in declining trees. Additionally, the comparable Huber value, intrinsic water-use efficiency, and leaf mass per area between healthy and declining trees suggest a relatively profligate water-use strategy by declining trees. Declining trees had lower nonstructural carbohydrate concentrations in leaves, branches, and twigs but higher soluble sugars concentration in fine roots than conspecific healthy trees. Conclusions Overall, declining trees in larch plantations would be more vulnerable to drought due to the higher risk of hydraulic dysfunction and carbohydrate depletion.https://doi.org/10.1186/s13717-024-00567-9Nonstructural carbohydratesHydraulic structureForest decliningDrought toleranceLeaf gas exchangeTemperate plantation |
| spellingShingle | Huanhuan Song Tianyu Zhong Jianxiao Zhu Tao Yan Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees Ecological Processes Nonstructural carbohydrates Hydraulic structure Forest declining Drought tolerance Leaf gas exchange Temperate plantation |
| title | Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees |
| title_full | Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees |
| title_fullStr | Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees |
| title_full_unstemmed | Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees |
| title_short | Higher risk of hydraulic dysfunction and carbohydrate depletion of declining Larix principis-rupprechtii trees |
| title_sort | higher risk of hydraulic dysfunction and carbohydrate depletion of declining larix principis rupprechtii trees |
| topic | Nonstructural carbohydrates Hydraulic structure Forest declining Drought tolerance Leaf gas exchange Temperate plantation |
| url | https://doi.org/10.1186/s13717-024-00567-9 |
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