Species diversity of communities and environmental interpretation of the suburban forest in Northern Nanjing

doi:10.3969/j.issn.1000-2006.202001029

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2020, Vol. 44 ›› Issue (6): 48-54.doi: 10.3969/j.issn.1000-2006.202001029

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Species diversity of communities and environmental interpretation of the suburban forest in Northern Nanjing

PAN Tingting¹(), CHEN Lin¹^,^*(), YANG Guodong², YI Xiangui¹, WANG Xianrong¹

1. Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
2. Jiangsu Key Laboratory of Environmental Engineering, Jiangsu Academy of Environmental Sciences, Nanjing 210036, China

Received:2020-01-13 Revised:2020-06-23 Online:2020-11-30 Published:2020-12-07
Contact: CHEN Lin E-mail:1242724890@qq.com;clinechen@njfu.edu.cn

Abstract

Abstract:

【Objective】This study aimed to investigate the structural characteristics, species diversity and the relationship between the plant communities and ecological environment of suburban forest of northern Nanjing, thereby providing basic information for protection of forest vegetation and sustainable utilization of plant resources in the region. 【Method】Based onthe field investigation, information of 72 plots of 10 m×10 m in 8 natural mountains in northern Nangjing (north to the Yangtze River) was collected using a typical sample method. The community composition, species diversity index and relationship between the community types and environmental factors were analyzed; the communities were classified using the multivariate regression tree (MRT) and canonical correspondence analysis (CCA). 【Result】There were 270 species of 203 genera in 79 families collected from the plots. Celtis sinensis and Quercus acutissima were the dominant and constructive species owing to their high important value in the arbor layer. The species diversity of the communities was determined by the number and distribution uniformity of dominant species such as C. sinensis and Q. acutissima, with characteristics of concentrated distribution and obvious domination. Seventy-two plots were divided into five clusters by MRT classification. Association Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ mainly consisted of Quercus variabilis + Morus alba with 16 plots, Pinus massoniana + Robinia pseudoacacia with 15 plots, Quercus acutissima + Broussonetia papyrifera with 13 plots, Pistacia chinensis + Liquidambar formosana with 18 plots, and Celtis sinensis + Dalbergia hupeana with 10 plots, respectively. The result of CCA two-dimension ordination was basically in accordance with that of MRT classification, dividing the communities into 5 groups. 【Conclusion】Suburban forests in the north of Nanjing are important areas for maintaining and improving the plant diversity of the region, which has high community species diversity, concentrated distribution and obvious domination of dominant species. Environmental factors such as altitude, slope and soil moisture content significantly affected the community structure and plant growth; among them, altitude exhibits the greatest effect, however, soil moisture content and soil nutrients also demonstrate certain effects on the plant growth.

Key words: community structure, multivariate regression trees(MRT), canonical correspondence analysis(CCA), environmental factor, suburban forest, Nanjing

CLC Number:

S718
Q948.1

PAN Tingting, CHEN Lin, YANG Guodong, YI Xiangui, WANG Xianrong. Species diversity of communities and environmental interpretation of the suburban forest in Northern Nanjing[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2020, 44(6): 48-54.

Figures/Tables 7

Table 1

Fig.1

Table 2

Table 3

Table 4

Fig.2

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物种species	总株数 total individuals	平均胸径 average DBH	相对盖度 relative coverage	相对多度 relative abundance	相对频度 relative frequency	重要值 important value
朴树Celtis sinensis	2 016	4.25	15.54	35.75	13.08	64.36
麻栎Quercus acutissima	1 048	7.58	25.70	18.58	9.58	53.86
构树Broussonetia papyrifera	496	5.44	6.27	8.79	8.47	23.53
马尾松Pinus massoniana	175	12.46	11.60	3.10	4.42	19.12
桑Morus alba	229	8.00	6.26	4.06	7.00	17.31
栓皮栎Quercus variabilis	130	12.12	8.15	2.30	2.39	12.85
刺槐Robinia pseudoacacia	159	8.06	4.41	2.82	4.42	11.65
柘树Cudrania tricuspidata	208	2.88	0.74	3.69	7.18	11.61
黄连木 Pistacia chinensis	89	5.32	1.08	1.58	6.08	8.73
黄檀 Dalbergia hupeana	166	5.81	2.39	2.94	2.95	8.28

样地 sample plot	Margalef 丰富度指数 Margalef index	Simpson 优势度指数 Simpson index	Shannon- Wiener 指数多样性 Shannon- Wiener index	Pielou 均匀度指数 Pielou index
群落Ⅰ(平山、盘山)	3.978	0.956	1.502	0.456
群落Ⅱ(方山、平山、瓜埠、灵岩山)	4.882	0.997	1.246	0.356
群落Ⅲ(冶山、灵岩山)	4.858	0.978	1.931	0.527
群落Ⅳ(平山、冶山、盘山)	3.648	0.972	1.670	0.519
群落Ⅴ(止马岭、奶山)	2.640	0.955	1.532	0.520

群落 community	所在样方优势树种 dominant species	坡度 slope	坡位 slope position	坡向 slope aspect	土壤含水率/% soil moisture content	土壤厚度/cm soil thickness	元素含量/(mg·kg^-1) element content			土壤 pH pH value of soil	海拔/m elevation
群落 community	所在样方优势树种 dominant species	坡度 slope	坡位 slope position	坡向 slope aspect	土壤含水率/% soil moisture content	土壤厚度/cm soil thickness	TK	TP	TN	土壤 pH pH value of soil	海拔/m elevation
Ⅰ	栓皮栎Quercus variabilis	上坡	东北	陡坡	62	24	1.04	23.46	6.42	7.1	231
Ⅱ	马尾松Pinus massoniana	中坡	正北	缓斜坡	61	22	1.25	29.44	12.46	7.2	157
Ⅲ	麻栎Quercus acutissima	上坡	西南	斜坡	64	29	1.16	27.49	9.44	7.3	88
Ⅳ	黄连木Pistacia chinensis	下坡	正南	微斜坡	67	21	1.29	25.62	10.66	7.1	42
Ⅴ	朴树Celtis sinensis	中坡	西北	缓斜坡	65	27	1.36	27.59	8.39	7.2	40

指标 parameter	物种轴1 species axis 1	物种轴2 species axis 2	环境轴1 environment axis 1	环境轴2 environment axis 2	坡度 slope	坡位 slope position	坡向 slope aspect	土壤含水率 soil moisture content	土壤厚度 soil thickness	TK	TP	TN	土壤pH pH value of soil	海拔 elevation
物种轴1 species axis 1	1
物种轴2 species axis 2	0.015	1
环境轴1 environment axis 1	0.786^**	0.013
环境轴2 environment axis 2	0.013	0.778^**	0.013	1
坡度 slope	-0.498^*	0.304^**	-0.648^*	0.394^**	1
坡位 slope position	-0.594^*	-0.215^*	-0.773^*	-0.284	0.726^**	1
坡向 slope aspect	-0.216^*	0.066	-0.283^*	0.082^**	-0.304	-0.304	1
土壤含水率 soil moisture content	0.771^**	0.052	0.994	0.083	0.101	-0.661	-0.721	1
土壤厚度 soil thickness	0.015	0.666^**	0.055^**	0.526^**	0.419^**	-0.315	0.121^**	0.074^**	1
TK	0.112^**	0.051	0.062^**	-0.121	-0.558	-0.984	-0.351	0.125^*	0.069	1
TP	0.321^**	0.031	0.104^**	0.276	-0.325	0.096^*	0.155	0.621^*	0.521^**	-0.233	1
TN	0.518^**	0.132	0.563	0.166^*	-0.366	-0.511	-0.101^*	0.594^**	0.125^**	0.211^**	0.172^*	1
土壤pH pH value of soil	0.263^*	0.058	0.073	-0.11	-0.547	-0.983	-0.33	0.136	0.08	0.263^*	0.062	0.263	1
海拔 elevation	0.552^*	0.142^*	0.115^*	0.287^*	-0.314	0.107	0.166^*	0.632	0.532^*	0.552^*	0.042	0.552	0.153	1
累计贡献率/% cumulative contribution rate	65.21	82.65

Species diversity of communities and environmental interpretation of the suburban forest in Northern Nanjing

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