Journal of Northeast Forestry University

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Phenological observations onLarix principis-rupprechtii Mayr. in primary seed orchard
Journal of Northeast Forestry University - Tập 12 Số 3 - Trang 201-204 - 2001
Xinbo Zhang, Ren Jian-ru, Zhang Dan-er
Seasonal dynamics of foliar δ13C and nutrient concentration of Chinese chastetree and spine jujube in foothill rock outcrop habitat of the southern Taihang Mountains, Central China
Journal of Northeast Forestry University - Tập 30 - Trang 45-56 - 2018
Chunxia He, Jinsong Zhang, Ping Meng, Jun Gao
In this study, in situ investigation was conducted on Chinese chastetree (Vitex negundo var. heterophylla) and spine jujube (Ziziphus jujuba var. spinosa) during early, developed, and closing succession stages. Monthly data were recorded for foliar δ13C values and foliar N, P, and K concentrations from May to October. Foliar δ13C values declined with time and differences by succession stage varied...... hiện toàn bộ
Patterns and determinants of plant richness by elevation in a mountain ecosystem in South Korea: area, mid-domain effect, climate and productivity
Journal of Northeast Forestry University - Tập 26 - Trang 905-917 - 2015
Chang-Bae Lee, Jung-Hwa Chun
We examined patterns of plant species richness on an elevation gradient and evaluated the effects of climatic variables including mean annual temperature and precipitation, area, the mid-domain effect and productivity on species richness along two transects on Mt. Seorak, South Korea. A total of 235 plant species of 72 families and 161 genera were recorded from 130 plots along the two transects. T...... hiện toàn bộ
Dependences of longleaf pine (Pinus palustris) natural reproduction on environments above ground
Journal of Northeast Forestry University - Tập 25 - Trang 565-570 - 2014
Qiuju Guo, Dexiang Wang, Xunru Ai, Lan Yao
We studied relations between natural seedling reproduction and above ground environment in a longleaf pine ecosystem. Forty-eight 0.05 ha circular plots were sampled under single-tree selection, grouptree selection and control stands in three main longleaf pine areas in south Alabama, USA. We measured six above-ground environment factors, viz. canopy closure, stand density, basal area, average tre...... hiện toàn bộ
Branching and growth of plantings in fifth year of a seedling seed orchard of Masson pine (Pinus massoniana Lamb.)
Journal of Northeast Forestry University - Tập 13 - Trang 28-32 - 2002
Lai Huan-lin, Wang Zhang-rong, Jiang Rui-rong
The features of branching and growth studied included height, diameter at breast height (DBH), total number of branches, annual height growth, annual branch elongation in the year of elongating, annual branch number for four consecutive years, diameter of branches of different ages, and diameter of stem where branch-whorl originates. For features of total growth and overall branching, no significa...... hiện toàn bộ
Regeneration of pitch pine (Pinus rigida) stands inhibited by fire suppression in Albany Pine Bush Preserve, New York
Journal of Northeast Forestry University - Tập 30 - Trang 233-242 - 2018
Chang-Seok Lee, George R. Robinson, Ingrid P. Robinson, Hansol Lee
The Pine Barrens in New York State are dominated by pitch pine (Pinus ridgida) and scrub oaks (Quercus ilicifolia and Q. prinoides). With fire suppression over the last 90 years or so, P. rigida regeneration has become sparse, even in areas set aside to preserve this type of vegetation. We evaluated the effects of fire and an alternative disturbance (mechanical removal of vegetation) for increasin...... hiện toàn bộ
A preliminary study on forest edge effect and application
Journal of Northeast Forestry University - - 1991
Ding Baoyong, Xiangwei Chen, Lu Wang, Qiang Liu, Jie Xiao
An overview on the protected area system for forest conservation in Bangladesh
Journal of Northeast Forestry University - Tập 21 - Trang 111-118 - 2010
Mohammad Shaheed Hossain Chowdhury, Masao Koike
A total of 19 protected areas (PAs) have been established in Bangladesh representing all the four forest types of the country. Apart from being the repository of biological diversity, these PAs serve as the source of subsistence livelihoods to the local communities. While all the PAs are managed by the state Forest Department (FD), with a view to ensure sustainability, a recent approach of co-mana...... hiện toàn bộ
Growth and decline of arboreal fungi that prey on Bursaphelenchus xylophilus and their predation rate
Journal of Northeast Forestry University - Tập 33 - Trang 699-709 - 2021
Haixiao Zhang, Zhiyan Wei, Xuefeng Liu, Jie Zhang, Guiping Diao
Pine wilt disease caused by pine wood nematodes is a deadly disease of the genus Pinus requiring strong quarantine measures. Since its discovery, it has been widely distributed throughout the world. China is one of the countries with a severe rate of infections due to its abundant pine resources. In this study, nematode-trapping fungi were collected from pine trees in Ninghai City, Zhejiang Provin...... hiện toàn bộ
Estimation of premature forests in Georgia (USA) using U.S. Forest Service FIA data and Landsat imagery
Journal of Northeast Forestry University - Tập 28 - Trang 1249-1260 - 2017
Hojung Kim, Chris J. Cieszewski, Roger C. Lowe
We used geographic information system applications and statistical analyses to classify young, premature forest areas in southeastern Georgia using combined data from Landsat TM 5 satellite imagery and ground inventory data. We defined premature stands as forests with trees up to 15 years old. We estimated the premature forest areas using three methods: maximum likelihood classification (MLC), reg...... hiện toàn bộ
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