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Undergrowth

About: Undergrowth is a research topic. Over the lifetime, 795 publications have been published within this topic receiving 11911 citations. The topic is also known as: understorey & underbrush.


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01 Jan 1997
TL;DR: In this paper, a comparison was made on the plant divenity of Pinus koraiensis forest after selective cutting and Betula platyplla secondary forest formed after clear cutting in Changbai Mountain forest region in China.
Abstract: A comparison was made on the plant divenity of Pinus koraiensis forest after selective cutting and Betula platyplla secondary forest formed after clear cutting in the Pkoraiensis forests in Changbai Mountain forest region in China The results show that the divenity of the whole community and undergrowth of B platyphyllasecondary forest are higher than that of any type of P koraiensis forests The divenity of the whole community and tree layer of P korairensis virgin forest with slight- selective cutting are the highest among all P koraiensis forests, which is the result of the forest adapting long term succession and species adaptation Because B platyphylla forest is in the second succession stage, more shade- tolerant tne species had colonized the community Besides, solar radiation is the B platyphylla forest is better so that the undergrowth developed well, and the diversity of woody plant is very high At last the relationships between diversity and evenness, haibtat of the communities are analysed

2 citations

Journal ArticleDOI
TL;DR: In this article, the authors focused on the population structure of the Tsenden along various altitudinal gradients, including its ecology and habitat within natural stands, using the Vegetation Survey method, using nine designated plots (20 x 20 m) covering altitudes ranging from 1700 to 2700 m above sea level.
Abstract: The Cupressus tortulosa Griffith, which had been popularly known as Cupressus corneyana Carriere and Cupressus himalaica Silba, is locally known as Tsenden. There are knowledge gaps in the ecology and population dynamics of Tsenden. Using the Vegetation Survey method, this study focused on the population structure of the Tsenden along various altitudinal gradients, including its ecology and habitat within natural stands. The study was conducted at Tsendenanag of Taewang Geog, Punakha Dzongkhag. Nine designated plots (20 x 20 m) were set up, covering altitudes ranging from 1700 to 2700 m above sea level. Tsenden was the dominant species associated with Quercus lanata, Q. glauca, Pinus wallichiana, Myrsine semiserrata, with undergrowth consisting of Eurya acuminata, Rhododendron species, and bamboo – Yushania species. Tsenden was abundant on steep rocky precipices with a slope percent ranging from 49% to 80%, occupying the aspects of northeast, southeast, east, and southwest. In undisturbed areas, Cupressus regeneration was absent; whereas, profuse regeneration was observed in disturbed (fire and landslide) sites, indicating that a certain level of disturbance is required to initiate regeneration. At higher altitudes, species dominance changes from Cupressus to Q. glauca, P. wallichiana and Rhododendron species.

2 citations

Journal Article
TL;DR: In this article, the relationship between undergrowth species diversity and stand density of Chinese fir plantations was investigated by permanent plot sampling and the results showed that stand density had significant effects on the species diversities of shrub and tree layers of undergrowth communities, but had no significant effect on the herb and vine layers.
Abstract: The relationship between undergrowth species diversity and stand density of 29-year-old,first-rotation (site index class 20) Chinese fir plantation in Xiayang state forest farm,Nanping,Fujian,China,were investigated by permanent plot sampling Analysis of the results showed that stand density of the Chinese fir plantation had significant effects on the species diversities of shrub and tree layers of undergrowth communities, but had no significant effects on the herb and vine layers Species diversities of tree and shrub layers of undergrowth of the Chinese fir plantation with the lowest stand density (900 stem·hm~(-2)) were significant higher than those with the highest stand density (over 1 500 stem·hm~(-2))

1 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of fire disturbance and environmental factors on undergrowth vegetation changes in a Pinus tabulaeformis forest, burned areas of an artificial P. tabularis forest in Liaoheyuan National Forest Park of Pingquan County, Hebei Province were used as research objects.
Abstract: To study the influence of fire disturbance and environmental factors on undergrowth vegetation changes in a Pinus tabulaeformis forest, burned areas of an artificial P. tabulaeformis forest in Liaoheyuan National Forest Park of Pingquan County, Hebei Province were used as research objects. The burned forest was divided into three levels according to the degree of burn:mild, moderate, and severe. And three repeated plots were set. Non-burned forests near the burned area were also used for control plots. A redundancy analysis (RDA) was conducted on undergrowth vegetation and environmental factors in the three degrees of the burned area and the non-burned forest. Analysis also determined the richness index (R), diversity index (H), and evenness index (J). Results showed that undergrowth regeneration after fire was largely influenced by tree mortality rate and slope aspect, but slope and slope position had little effect on important herbs. The importance value for herbs and shrubs showing different degrees of change after fire:compared to control plots the severe burned area had a sharp increase in the number of herbaceous species from 15 to 26 with the number of shrub species increasing from 3 to 6. With an increase in fire intensity, R and H showed an overall increase (P < 0.05); whereas, J decreased (P < 0.05). Thus, growth and changes in undergrowth vegetation after fire were jointly affected by fire and topographic factors with fire being conducive to regeneration of undergrowth vegetation partly.

1 citations

Journal Article
TL;DR: In this paper, the effect of slope on the growth of Larix principis-rupprechtii and the undergrowth biodiversity was investigated and analyzed in Weichang Xinfeng Forest Farm.
Abstract: The slope has a great influence on silviculture and management measures of Larix principis-rupprechtii plantation but the discomfort slope will lead to the imbalance of forest structure and the destruction of the ecological function,resulting in the ecological consequences of soil erosion and reduction in biodiversity.To study the effect of slope on the growth of Larix principis-rupprechtii and the undergrowth biodiversity,the growth of Larix principis-rupprechtii plantation and diversity of undergrowth vegetation on the different slope positions of Weichang Xinfeng Forest Farm were investigated and analyzesed.The result showed that:(1)there was no significant impact of slope positions on the forest stock volume;(2)The slope had a significant effect on DBH of Larix principis-rupprechtii plantations at the 5%significant level;(3)The slope had an extremely significant impact on the biodiversity of North China Larch plantatiion,with the evenness index and species diversity indices in the herb layer higher than those in the shrub layer.

1 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202337
202293
202133
202030
201934
201836