Shrub Diversity and Niche Characteristics in the Initial Stage of Reconstruction of Low-Efficiency <i>Cupressus funebris</i> Stands
The upper reaches of the Yangtze River are a very important ecological barrier in China, but the ecological benefits of large-scale <i>Cupressus funebris</i> Endl.plantations are low. This study investigated 12 plantations of different compositions and densities, including two densities...
Guardado en:
| Autores principales: | , , , , , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/97bfc67139aa4620b416ea5810950b1b |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | The upper reaches of the Yangtze River are a very important ecological barrier in China, but the ecological benefits of large-scale <i>Cupressus funebris</i> Endl.plantations are low. This study investigated 12 plantations of different compositions and densities, including two densities of <i>Cinnamomum septentrionale</i> Hand.-Mazz. (Cs), <i>Alnus cremastogyne</i> Burk. (Ac), and <i>Toona sinensis</i> (A. Juss.) Roem. (Ts), and mixed plantations of Cs + Ac (CA), Ts + Cs (TC), Ts + Ac (TA), and Ac + Ts + Cs (ATC) and the cutting-blank (CB), and, at the same time, the unreconstructed pure <i>C. funebris</i> (Cf) forest was set as the control. We aimed to explore the influence mechanism of upper tree composition and density on shrub diversity, as well as the relationship between shrub diversity and niche. Our research results are as follows: (1) Among all the patterns, the TA, CA, and TC patterns are the most conducive to improving the diversity of shrubs. The composition and density of different trees have a great influence on the diversity of shrubs. (2) Niche is closely related to the diversity of shrubs. In the patterns of low niche overlap between dominant shrubs, the diversity of shrubs is greater. These results contribute to a deeper understanding of the relationship between the diversity of overstory and shrubs, and reveals the relationship between niche and diversity. |
|---|