Water use sources and its influencing factors of Pinus massoniana and Quercus acutissima community in hilly region of Southern China
The process of plant water use is complex and changeable, which is affected by various factors. Exploring the sources and influencing factors of plant water use can provide reference for clarifying the mechanisms of forest water adaptation under climate change. We chosen the typical forest communities in the hilly region of Sou-thern China, Pinus massoniana and Quercus acutissima mixed forest as the research object. By analyzing water sources of plants in different seasons, the factors affecting the changes of water sources were explored in combination with soil water, precipitation, and plant roots. The results showed that water use characteristics of P. massoniana and Q. acutissima were similar and both mainly utilized 0-40 cm soil water during the dry season, with proportions of 60.0% and 66.6%. During the rainy season, as soil water content of deep layers increased, the main water sources of both gradually shifted towards deep soil. The similarity proportion indices of P. massoniana and Q. acutissima were above 60%, indicating that there was an obvious water competition between them. Root system of Q. acutissima had plasticity in water absorption, and played a dominant role in absorbing shallow water during the dry season. Water was the main driving factor for water source transformation of Q. acutissima and P. massoniana during the rainy season. Compared with P. massoniana, Q. acutissima was more sensitive to the changes of water sources. Under the background of future warming and drying, the competition between the two species for shallow water sources might be intensified. Those two species should be sparsely planted or thinned to optimize forest structure to cope with water stress.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:34 |
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| Enthalten in: |
Ying yong sheng tai xue bao = The journal of applied ecology - 34(2023), 7 vom: 20. Juli, Seite 1729-1736 |
| Sprache: |
Englisch |
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| Weiterer Titel: |
南方丘陵区马尾松-麻栎群落水分利用来源及其影响因素 |
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| Beteiligte Personen: |
Zhang, Sui-Meng [VerfasserIn] |
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| Links: |
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| Themen: |
Influencing factor |
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| Anmerkungen: |
Date Completed 12.09.2023 Date Revised 12.09.2023 published: Print Citation Status MEDLINE |
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| doi: |
10.13287/j.1001-9332.202307.010 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 245 | 1 | 0 | |a Water use sources and its influencing factors of Pinus massoniana and Quercus acutissima community in hilly region of Southern China |
| 246 | 3 | 3 | |a 南方丘陵区马尾松-麻栎群落水分利用来源及其影响因素 |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The process of plant water use is complex and changeable, which is affected by various factors. Exploring the sources and influencing factors of plant water use can provide reference for clarifying the mechanisms of forest water adaptation under climate change. We chosen the typical forest communities in the hilly region of Sou-thern China, Pinus massoniana and Quercus acutissima mixed forest as the research object. By analyzing water sources of plants in different seasons, the factors affecting the changes of water sources were explored in combination with soil water, precipitation, and plant roots. The results showed that water use characteristics of P. massoniana and Q. acutissima were similar and both mainly utilized 0-40 cm soil water during the dry season, with proportions of 60.0% and 66.6%. During the rainy season, as soil water content of deep layers increased, the main water sources of both gradually shifted towards deep soil. The similarity proportion indices of P. massoniana and Q. acutissima were above 60%, indicating that there was an obvious water competition between them. Root system of Q. acutissima had plasticity in water absorption, and played a dominant role in absorbing shallow water during the dry season. Water was the main driving factor for water source transformation of Q. acutissima and P. massoniana during the rainy season. Compared with P. massoniana, Q. acutissima was more sensitive to the changes of water sources. Under the background of future warming and drying, the competition between the two species for shallow water sources might be intensified. Those two species should be sparsely planted or thinned to optimize forest structure to cope with water stress | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a influencing factor | |
| 650 | 4 | |a isotope | |
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| 650 | 4 | |a water use | |
| 650 | 7 | |a Soil |2 NLM | |
| 700 | 1 | |a Ye, Li-Min |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Yi-Zhi |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xiao-Xia |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Yuan-Ke |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Jiang |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Zi-Qiang |e verfasserin |4 aut | |
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