Subjects: Biology >> Botany >> Applied botany submitted time 2023-06-05 Cooperative journals: 《广西植物》
Abstract： Hainan Tropical Rainforest National Park is located in the middle mountainous region of Hainan Province, and it has a diverse landscape with 95.56% forest coverage. Studying the evolutionary aspects of the landscape pattern in time and space in Hainan Tropical Rainforest National Park is extremely important for preserving and enhancing Hainan Province's ecological security barrier. The landscape pattern index, landscape single-motion attitude, and transfer matrix were used to examine the geographical and temporal evolution features of the landscape pattern of ten types of land cover types in Hainan Tropical Rainforest National Park between 2015 and 2020. The paper used ground cover data from the Hainan Tropical Rainforest National Park between 2015 and 2020 to develop a landscape pattern distribution system based on actual ecological situations. Other elements that affected the evolution of the landscape pattern in Hainan Tropical Rainforest National Park included policies, climate, and other natural and human factors. The results were as follows: (1) The overall landscape fragmentation of Hainan Tropical Rainforest National Park reduced between 2015 and 2020, increasing spatial agglomeration of the landscape, decreasing integrated dynamic attitude, and generally steady development of landscape types. (2) The area of evergreen broad-leaved forest in the tropical rainforest has increased in five years, with an increase of 531.38 km2, a decrease in fragmentation, and a positive growth trend, and the landscape tends to be concentrated in patches; on the other hand, the area of needle-leaved forest and shrubwood has been significantly reduced, with losses of 189.53 km2 and 294.74 km2 respectively; there was also a partial transformation of water. The area of the water landscape has been somewhat reduced, and the patches tend to be concentrated and spread; the remainder of the landscape types account for a relatively modest amount, and develop and change in the direction of natural succession. (3) The landscape pattern evolution of Hainan Tropical Rainforest National Park was primarily based on natural succession of the rainforest, followed by a comprehensive impact of policy, climate, and other factors, which reduced human factors on the tropical rainforest landscape interference and was conducive to improving the rainforest ecosystem's self-healing capacity. To summarize, the landscape pattern of Hainan Tropical Rainforest National Park has been stable since the commencement of the pilot project, and policy direction has played an essential constructive role. The targeted conservation and restoration of the tropical rain forest environment will help to the Hainan Tropical Rainforest National Park's long-term growth.
Subjects: Biology >> Botany >> Applied botany submitted time 2023-05-21 Cooperative journals: 《广西植物》
Abstract： World natural heritage sites are some of the most important and valuable protected areas in the world, and their designation aims to give recognition to the uniqueness and protect the integrity of the sites, which are of significant global value. Understanding the global uniqueness and value of natural heritage will help to better manage and protect them, support the functioning of ecosystems, and promote sustainable development. A systematic review was conducted to determine the potential for the Hainan Tropical Rainforest to become a orld natural heritage site. This study investigated the presence and diversity of primitive animals and the vegetation community and examined other biological processes. The results of this assessment are as follows: (1) Hainan potential orld natural heritage site has 3 653 vascular plant species. There are 540 species of terrestrial vertebrates, which account for 10%-30% of the wild animal species in the country. This indicates that biodiversity in this area is extremely high. (2) The flora found in the Hainan Tropical Rainforest is unique. Vegetation on Hainan Island can be categorized in the Indo- Malay rainforest group, and within the Malay region, and vegetation is tropical in nature and has a common origin with the South China mainland. This is indicative of the transition between the South China flora into the Asian rainforest. (3) There are seven endemic genera in the flora, and about one out of every 10 species is endemic to the island, although some show some characteristics of continental origin. The flora on the island are an irreplaceable element of biodiversity and make up a valuable ecosystem. This study clarifies the outstanding universal values of the Hainan Tropical Rainforest and makes the case using empirical scientific evidence for nominating this area as a world natural heritage site.
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