DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/2022 str. 25 <-- 25 --> PDF |
Factors of Natural Regeneration of Platycladus orientalis (L.) Franco in Guilin, China Čimbenik prirodne obnove vrste Platycladus orientalis (L.) Franco u Guilinu, Kina Ping Qin, Ying Huang, Wenjun Zheng, Haitao Yu, Qing Zhang, Zhiyuan Xie, Yangyang Gao, Yichuan Bu, Yu Gan Summary Cypress (Platycladus orientalis (L.) Franco) is one of the important evergreen trees for afforestation in barren mountains, soil consolidation, and water conservation, but natural regeneration of cypress is complex and slow. An understanding of the influence mechanism of the natural regeneration of cypresses is essential for elevating survival and regeneration. This study aimed to clarify the relationship between stand factors, environmental factors, and regeneration of cypress plantations. A total of 42 cypress sample plots in Guilin, China, were selected to evaluate the impact of various stand factors and environmental factors on the regeneration of cypresses using survey statistics and Pearson and Spearmanrank correlation analysis. In this study, cypress has the highest frequency and density of regeneration among all the seedlings in the 18 surveyed forests, but the height structure of cypress seedlings distributes in uneven mode and mainly Grade I (height < 30 cm) seedlings. Low-density herbs and high-density moss mulching had a directly positive effect on the number of cypress regeneration seedlings. Larger soil stone content and gap area can promote cypress regeneration, which is appropriate for cypresses in the seedling stage. In conclusion, timely weeding, proper soil loosening, and improving light transmittance contribute to promoting the regeneration of cypresses. Key words: Cypress, Stand factors, Environmental factors, Natural regeneration Introduction Uvod Natural regeneration (NR) refers to the process where forests are reformed entirely relying on natural forces (Chazdon and Guariguata 2016; Khaine et al.2018 ;Ribeiro et al. 2022). As an important and complex ecological process, the NR of forests is always one of the main fields of research of forest management and ecosystem, which has an important impact on vegetation development and ecosystem. In recent years, to clarify the influential factors of NR of plants, scholars have made great efforts in terms of environmental factors such as seed characteristics, stand factors, soil factors, habitat factors, and interference factors. For instance, seedling establishment is not only the initial stage of controlling forest dynamic development but also an important stage. Microhabitat greatly affects seedling establishment |