摘要: |
分析我国高降雨量背景下不同成熟度热带季雨林的群落特征,为解析其群落构建机制、森林结构优化、植被恢复和功能性状等提供科学数据支撑。该研究在广东阳春鹅凰嶂典型季雨林对4种不同植物群落ABCD展开调查,试图对其群落结构进行分析,判断其成熟度差异,分析群落特征,预测演替方向,并提出优化建议。结果表明:(1)目前四个群落都处于演替前中期,该阶段特点表现为林层较为单一,各树种树高和胸径还有较大发展空间;(2)Shannon-Wiener指数为2.87~4.03,Simpson指数为0.91~0.98,Pielou均匀度指数为0.70~0.88,各群落多样性特征差异明显;(3)群落内个体大小分化程度表现较为中庸,均呈轻微聚集分布,树种表现为中度、强度或极强度混交;(4)综合群落基础特征、多样性特征、空间结构特征分析得出成熟度排名为D群落>A群落>C群落>B群落。该研究结果表明,四个群落短期内都将继续以阳性树种为第一且主要优势树种这一前提进行演替,可通过调节群落空间结构或增加物种多样性等措施,促进群落的正向演替。目前鹅凰嶂季雨林生物多样性发展潜力较大,未来应对该区域加强监管与保护,同时应对该地区植被生态学和生物多样性保护展开广泛监测与深入研究。 |
关键词: 高降雨量,热带北缘,演替,物种多样性,空间结构,成熟度 |
DOI:10.11931/guihaia.gxzw202209026 |
分类号: |
基金项目:广东林业生态监测网络平台建设项目(2019KJCX021,2020-KYXM-09,2021CG530)[Supported by ] |
|
Different communities’ characteristics and maturity levels analysis in E’ huangzhang tropical monsoon forests, Guangdong. |
LIU Yue1,2, YU Yaohong1, WU Miaolan1, WANG Yiying1, TAO Yuzhu3, LIN Zizhan4, ZHOU Qing1, MO Qifeng1
|
|
Abstract: |
Analyzing the community characteristics of tropical monsoon forests with different maturity levels in the context of high rainfall in China, is aiming to provide scientific data support for dissecting their community construction mechanisms, forest structure optimization, vegetation restoration, and functional traits. In this study, we investigated four different plant communities named ABCD respectively in a typical monsoon forest of E’ huangzhang in Yangchun, Guangdong Province, in attempt to analyze their community structures, determine their maturity differences, analyze community characteristics, predict succession directions, and make suggestions for optimization. The result were as follows: (1)All four communities were currently in the pre- to mid-term succession stages, characterized by a single forest layer and a large space for development of tree height and diameter; (2)Their Shannon-Wiener index ranged from 2.87 to 4.03, the Simpson index from 0.91 to 0.98, and the Pielou index from 0.70 to 0.88, which meant that the diversity characteristics of each community differed significantly; (3)The degree of individual size differentiation within the community was all moderate, all showed a slight aggregated distribution, and the tree species were moderately, strongly or very strongly mingling; (4)The analysis of community basic characteristics, diversity characteristics and spatial structural characteristics led to the maturity levels ranking of community D > community A > community C > community B.The study indicates that all four communities will develop on the premise that intolerant tree species are the first and main dominant species, and people can promote positive community succession by adjusting the community spatial structure or increasing species diversity.At present, E’ huangzhang tropical monsoon forests has a great development potential in biodiversity, and the area should be more regulated and protected in the future, while the ecology of vegetation and biodiversity conservation in the area should be widely monitored and studied in depth. |
Key words: high rainfall, marginal northern tropic, succession, biodiversity, spatial structure, maturity level |