Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China
<b>Aims</b>: The functional traits of twigs and leaves are closely related to the ability of plants to cope with heterogeneous environments. The analysis of the characteristics of twigs and leaves and leaf thermal dissipation in riparian plants is of great significance for exploring the...
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MDPI AG
2025-01-01
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| author | Qun Li Min Ma Yurui Tang Tingting Zhao Chengzhang Zhao Bo Li |
| author_facet | Qun Li Min Ma Yurui Tang Tingting Zhao Chengzhang Zhao Bo Li |
| author_sort | Qun Li |
| collection | DOAJ |
| description | <b>Aims</b>: The functional traits of twigs and leaves are closely related to the ability of plants to cope with heterogeneous environments. The analysis of the characteristics of twigs and leaves and leaf thermal dissipation in riparian plants is of great significance for exploring the light energy allocation and ecological adaptation strategies of plant leaves in heterogeneous habitats. However, there are few studies on the correlation between the twig–leaf characteristics of riparian plants and their heat dissipation in light heterogeneous environments. <b>Methods</b>: In this study, the riparian plant <i>Hippophae rhamnoides</i> in Taohe National Wetland Park was the research object. According to the differences in the canopy light environment of the <i>H. rhamnoides</i> population, three habitat gradients were set: I, the full sight zone; II, the moderate shade zone; and III, the canopy cover zone. We studied the relationship between the twig–leaf characteristics of <i>H. rhamnoides</i> and leaf thermal dissipation in a heterogeneous light environment. <b>Important Findings</b>: The results are as follows: from the full sight zone to the canopy cover zone, the population characteristics and the twig, leaf, and photosynthetic fluorescence physiological characteristics of <i>H. rhamnoides</i> demonstrated significant changes (<i>p</i> < 0.05). In the full sight zone, <i>H. rhamnoides</i> tended to have thick leaves with a smaller SLA on short and thick twigs, and the light energy absorbed by the leaves accounted for a higher proportion of thermal dissipation. In the moderate shade zone, <i>H. rhamnoides</i> tended to grow many thin leaves with high SLA on long and thick twigs, and the proportion of light energy absorbed by the leaves for heat dissipation was lower than that in the full sight zone. In the canopy cover zone, <i>H. rhamnoides</i> tended to grow a few large and thick leaves with a low SLA on slender and long twigs, and the proportion of light energy absorbed by the leaves for heat dissipation was the lowest. There was a significant correlation between the twig–leaf and leaf heat dissipation of <i>H. rhamnoides</i> in the three habitats (<i>p</i> < 0.05). The co-variation of plant branches and leaves and the timely adjustment of thermal dissipation in photoheterogeneous habitats reflect the phenotypic plasticity mechanism and self-protection strategy of riparian plants in adapting to heterogeneous environments. |
| format | Article |
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| institution | Kabale University |
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| publishDate | 2025-01-01 |
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| spelling | doaj-art-d5acbed678204eaaa7204903d70009022025-01-24T13:47:05ZengMDPI AGPlants2223-77472025-01-0114228210.3390/plants14020282Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, ChinaQun Li0Min Ma1Yurui Tang2Tingting Zhao3Chengzhang Zhao4Bo Li5College of Resources and Environment, Xichang University, Xichang 615013, ChinaCollege of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, ChinaCollege of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, ChinaCollege of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, ChinaCollege of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, ChinaSchool of Life Sciences, Fudan University, Shanghai 200433, China<b>Aims</b>: The functional traits of twigs and leaves are closely related to the ability of plants to cope with heterogeneous environments. The analysis of the characteristics of twigs and leaves and leaf thermal dissipation in riparian plants is of great significance for exploring the light energy allocation and ecological adaptation strategies of plant leaves in heterogeneous habitats. However, there are few studies on the correlation between the twig–leaf characteristics of riparian plants and their heat dissipation in light heterogeneous environments. <b>Methods</b>: In this study, the riparian plant <i>Hippophae rhamnoides</i> in Taohe National Wetland Park was the research object. According to the differences in the canopy light environment of the <i>H. rhamnoides</i> population, three habitat gradients were set: I, the full sight zone; II, the moderate shade zone; and III, the canopy cover zone. We studied the relationship between the twig–leaf characteristics of <i>H. rhamnoides</i> and leaf thermal dissipation in a heterogeneous light environment. <b>Important Findings</b>: The results are as follows: from the full sight zone to the canopy cover zone, the population characteristics and the twig, leaf, and photosynthetic fluorescence physiological characteristics of <i>H. rhamnoides</i> demonstrated significant changes (<i>p</i> < 0.05). In the full sight zone, <i>H. rhamnoides</i> tended to have thick leaves with a smaller SLA on short and thick twigs, and the light energy absorbed by the leaves accounted for a higher proportion of thermal dissipation. In the moderate shade zone, <i>H. rhamnoides</i> tended to grow many thin leaves with high SLA on long and thick twigs, and the proportion of light energy absorbed by the leaves for heat dissipation was lower than that in the full sight zone. In the canopy cover zone, <i>H. rhamnoides</i> tended to grow a few large and thick leaves with a low SLA on slender and long twigs, and the proportion of light energy absorbed by the leaves for heat dissipation was the lowest. There was a significant correlation between the twig–leaf and leaf heat dissipation of <i>H. rhamnoides</i> in the three habitats (<i>p</i> < 0.05). The co-variation of plant branches and leaves and the timely adjustment of thermal dissipation in photoheterogeneous habitats reflect the phenotypic plasticity mechanism and self-protection strategy of riparian plants in adapting to heterogeneous environments.https://www.mdpi.com/2223-7747/14/2/282twig diameterleafing intensitythermal dissipationelectron transport rate<i>Hippophae rhamnoides</i>riparian zone |
| spellingShingle | Qun Li Min Ma Yurui Tang Tingting Zhao Chengzhang Zhao Bo Li Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China Plants twig diameter leafing intensity thermal dissipation electron transport rate <i>Hippophae rhamnoides</i> riparian zone |
| title | Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China |
| title_full | Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China |
| title_fullStr | Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China |
| title_full_unstemmed | Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China |
| title_short | Correlation Analysis of Twig and Leaf Characteristics and Leaf Thermal Dissipation of <i>Hippophae rhamnoides</i> in the Riparian Zone of the Taohe River in Gansu Province, China |
| title_sort | correlation analysis of twig and leaf characteristics and leaf thermal dissipation of i hippophae rhamnoides i in the riparian zone of the taohe river in gansu province china |
| topic | twig diameter leafing intensity thermal dissipation electron transport rate <i>Hippophae rhamnoides</i> riparian zone |
| url | https://www.mdpi.com/2223-7747/14/2/282 |
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