Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale ...Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale and layout, promoted effective protection and benign development, and proposed strategies for the construction and management of public welfare forest in Hainan Province.展开更多
Health condition and replacement time of terminal bud were selected as quality indexes of regenerated seedlings in 3 different growth forms to analyze their impact on seedling height and ground diameter. The results s...Health condition and replacement time of terminal bud were selected as quality indexes of regenerated seedlings in 3 different growth forms to analyze their impact on seedling height and ground diameter. The results showed that quality of terminal bud was related to the seedling growth, the regenerated seedlings with healthy terminal buds but no replacement experienced the largest growth amount and slight damage of terminal bud or one replacement stimulated growth of ground diameter. Multiple replacements of terminal bud would reduce seedling quality and influence its growth. Exploration of the quality characters of seedlings helped to know the dynamic features of early seedling growth, and provided theoretical support for the tending operation to improve quality of natural tropical forest.展开更多
According to natural conditions and vegetation distribution characteristics of Wenchang Bamenwan Mangrove Forest, sample plots were set up to investigate plant community characteristics in this area, and to explore th...According to natural conditions and vegetation distribution characteristics of Wenchang Bamenwan Mangrove Forest, sample plots were set up to investigate plant community characteristics in this area, and to explore the diversity characteristics of different subareas and calculate importance values of various tree species in the study area. According to the investigation, there are 48 plant species of 42 genera and 28 families in Bamenwan Mangrove Forest, including 29 tree species of 24 genera and 17 families. Among the tree species, those on the top 5 in the importance value list are Hibiscus tiliaceus, Bruguiera sexangula, Lumnitzera littorea, Rhizophora apiculata, Xylocarpus granatum. There are 3 shrub species of 3 genera and 3 families, including Atalantia buxifolia, Lantana camara and Streblus asper. And there are 16 herbal species of 16 genera and 11 families, including Acrostichum aureum, Vernonia cinerea, Acanthus ilicifolius, Alocasia macrorrhiza, Synedrel a nodiflora, Gynura japonica and etc.. Diversity of the mangrove in different areas varies greatly, Shannon-Wiener index and richness index of semi-mangrove forest are both higher than those of other 3 mangrove forests. Bamenwan Mangrove Forest is characterized by diversified species and complex structures, but the community diversity is unevenly distributed because of the interventions from many factors. More human efforts are suggested to enhance the mangrove protection, so as to enrich the community diversity.展开更多
文摘Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale and layout, promoted effective protection and benign development, and proposed strategies for the construction and management of public welfare forest in Hainan Province.
基金Operation Subsidy for Hainan Wenchang Forest Ecosystem National Positioning Observation and Research Station(2015-LYPT-DW-095)
文摘Health condition and replacement time of terminal bud were selected as quality indexes of regenerated seedlings in 3 different growth forms to analyze their impact on seedling height and ground diameter. The results showed that quality of terminal bud was related to the seedling growth, the regenerated seedlings with healthy terminal buds but no replacement experienced the largest growth amount and slight damage of terminal bud or one replacement stimulated growth of ground diameter. Multiple replacements of terminal bud would reduce seedling quality and influence its growth. Exploration of the quality characters of seedlings helped to know the dynamic features of early seedling growth, and provided theoretical support for the tending operation to improve quality of natural tropical forest.
基金Sponsored by Technological Development Specialized Fund for Hainan Provincial Scientific Research Institutes(SQ2017JSKF0005)
文摘According to natural conditions and vegetation distribution characteristics of Wenchang Bamenwan Mangrove Forest, sample plots were set up to investigate plant community characteristics in this area, and to explore the diversity characteristics of different subareas and calculate importance values of various tree species in the study area. According to the investigation, there are 48 plant species of 42 genera and 28 families in Bamenwan Mangrove Forest, including 29 tree species of 24 genera and 17 families. Among the tree species, those on the top 5 in the importance value list are Hibiscus tiliaceus, Bruguiera sexangula, Lumnitzera littorea, Rhizophora apiculata, Xylocarpus granatum. There are 3 shrub species of 3 genera and 3 families, including Atalantia buxifolia, Lantana camara and Streblus asper. And there are 16 herbal species of 16 genera and 11 families, including Acrostichum aureum, Vernonia cinerea, Acanthus ilicifolius, Alocasia macrorrhiza, Synedrel a nodiflora, Gynura japonica and etc.. Diversity of the mangrove in different areas varies greatly, Shannon-Wiener index and richness index of semi-mangrove forest are both higher than those of other 3 mangrove forests. Bamenwan Mangrove Forest is characterized by diversified species and complex structures, but the community diversity is unevenly distributed because of the interventions from many factors. More human efforts are suggested to enhance the mangrove protection, so as to enrich the community diversity.