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    题名 作者 年代 出处 被引量
1Species diversity and regeneration of old-growth seasonally dry Shorea robusta forests following gap formation显示文摘木质的种类的差异和新生在二生态的壁龛 viz 被调查。在旧生长的季节联盟者的差距和未经触动的植被弄干 Shorea 柔韧一(Gaertn。f.) 在尼泊尔的森林。我们也联系了差异措施和新生属性的变化到差距特征。树和灌木部件的茎密度比在未经触动的植被在差距是更高的。S 的幼苗密度。柔韧 and Terminalia alata (B。Heyne 前 Roth ) 比在未经触动的植被在差距是更高的,当矛盾的结果为 T 被观察时。bellirica (Gaertn。前 Roxb ) 并且 Syzigium 枯茗 i (L。Skeels ) 以幼苗密度。在幼苗层的 Simpson 索引,平均索引,和种类个人比率的补充比未经触动的植被在差距是更低的。差距尺寸能解释种类丰富和种类建立率。在不同的年里到多重树下降创造的差距有 S 的更高的幼苗密度。柔韧 a 比单个或多重的树创造的差距掉在一样的年里。在结论,差距由增加柳安森林的幼苗密度,和帮助新生维持种类差异。除了差距尺寸,另外的差距属性也影响种类差异和新生。Indra Prasad Sapkota Mulualem Tigabu Per Christer Oden 2009Journal of Forestry Research2009,20,1:14
2Comparative growth, dry matter accumulation and photosynthetic rate of seven species of Eucalypt in response to phosphorus supply显示文摘Plantations of eucalypts as short-rotation tree crops are rapidly expanding in tropical and sub-tropical regions, including southern China, where the soils are acidic and available phosphorus(P) is limited. We investigated seedling growth, dry matter accumulation, and the dynamics of photosynthetic rate and chlorophyll content of seven Eucalyptus species/hybrids(E. dunnii, E. grandis, E. grandis × E. camaldulensis, E. urophylla × E. camaldulensis, E. urophylla × E. tereticornis, E. grandis × E. tereticornis, E. urophylla × E. grandis) in response to different levels of P supply(0, 6, 12 and 18 mg?kg-1 KH2PO4). The photosynthetic rate and the chlorophyll content significantly declined as the P supply declined in almost a linear fashion for all species as the P stress period extended. In the absence of P supply, height growth of seedlings of all species was significantly impaired, while root collar diameter growth and whole plant dry matter accumulation was not affected by the level of P supply in most of the species. Significant inter-species variations in growth, dry matter accumulation and photosynthetic rate in response to P supply were detected. Eucalyptus dunnii had the lowest growth performance across all levels of P supply while E. urophylla × E. tereticornis showed superior growth performance. From a practical point of view, E. urophylla × E. tereticornis is suggested as a candidate hybrid for planting on slightly P-deficient sites in southern China while E. dunnii, being a slow-growing species, is not suitable for short-rotation plantation. On plantation sites where severe P deficiency exists, P fertilization needs to be considered to boost rapid growth of seedlings so as to meet the management objectives of short-rotation plantation.Peng-fei Wu Xiang-qing Ma Mulualem Tigabu Yong Huang Li-li Zhou Liping Cai Xiao-long Hou Per Christer Oden 2014Journal of Forestry Research2014,25,2:6
3光温条件对新热带干旱树种种子萌发和苗木建成的影响显示文摘测定了香红椿(Cedrela odorata)、神圣愈疮木(Guaiacum sanctum)和柠檬树(Calycophyllum candidissimum)种子萌发所需要的条件、并对光强对在尼加拉瓜开阔地、半开阔地和干旱森林林冠下所营造的香红椿和神圣愈疮木的苗存活率和生长的影响进行了研究。结果表明,在20-35℃常温条件下,柠檬树在有光照条件下种子萌发率显著高于黑暗条件的种子萌发率;香红椿和神圣愈疮木的种子在光照和黑暗条件下都有一定程度的萌发,最适萌发温度均为20-25℃。研究还表明,变温条件培养并没有提高3个树种的种子萌发率。在林冠层下和开阔地上神圣愈疮木苗木的存活率分别为70%和80%,两种条件下的周径相对生长速率分别为1.42mm/月和1.88mm/月。总的来说,在3个树种中,香红椿幼苗存活率较低,特别是在冠层内生长的幼苗。以上结果说明:柠檬树种子萌发需要光照;而香红椿和神圣愈疮木种子萌发对温度条件较为敏感。神圣愈疮木幼苗在裸地条件下存活率较高,可以作为退化土地造林备选树种。图2表2参43。Benigno Gonzalez-Rivas Mulualem Tigabu Guillermo Castro-Marin Per Christer Oden 2009Journal of Forestry Research2009,20,2:5
4Physiological responses of needles of Pinus massoniana elite families to phosphorus stress in acid soil显示文摘Pinus massoniana Lamb. is a major timber species widely planted in the South China, where the soil is acidic and deficient in phosphorus (P) due to fixation by aluminum and iron. Understanding the physiological responses to rhizospheric insoluble P is essential for enhancing plantation productivity. Thus, a sand culture experiment was conducted with four levels of P treatment (0, 5, 20 g insoluble P and 10 g soluble P), and 11 P. massoniana elite families. Physiological responses were measured after two months of stress. Compared to the normal soluble P treatment, the insoluble P treatment significantly reduced the proline content and the APase activity in the needles, while it significantly increased the catalase activity by 1.3-fold and malondialdehyde content by 1.2-fold. Soluble protein content was unaffected by the treatments, but chlorophyll content was significantly lower in P-deprived treatment compared with soluble and insoluble P treatments. These physiological responses also exhibited highly significant variation among families (p < 0.01). The findings suggest that increased catalase activities in the presence of insoluble P might be involved in the activation of an anti-oxidation defense mechanism that scavenges the reactive oxygen species elicited by the stress. And this response has a strong genetic control that can be exploited to identify desirable genotypes.HE You-lan LIU Ai-qin Mulualem Tigabu WU Pengfei MA Xiang-qing WANG Chen Per Christer Oden 2013Journal of Forestry Research2013,24,2:4
5Gap characteristics and their effects on regeneration,dominance and early growth of woody species显示文摘Aims We aim to examine the canopy gap characteristics and evaluate their influence on regeneration,dominance and the early growth of woody species in seasonally dry Shorea robusta forests(Sal forests).Methods Sixty canopy gaps were surveyed in six randomly located transects belts in seasonally dry subtropical Sal forests of central Nepal.Each transect belt was followed until 10 gap sites were encountered.The equation for the area of an ellipse was used to calculate the size of canopy gap,measuring the longest axis and its perpendicular shorter axis.Number,sizes,ages and causes of tree falls creating canopy gaps along with number and sizes of border trees were identified and recorded.Detailed gap inventories were carried out using square 25-m2 quadrats placed in the middle of each gap.All individuals>2 m in height within the quadrat were identified at the species level and their diameter at breast height was measured.We assigned a nested 4-m2 quadrat to the corner of each 25-m2 quadrat,within which all woody individuals>10 cm tall were identified at the species level,and counted them and their regeneration mechanisms were identified.The height and collar diameter of the tallest individuals were measured.Descriptive statistics was calculated for the variables of interests and Pearson correlation,linear regression,independent-sample t-test and chi-square test were used to relate them and to test for their associations.Important Findings The study found mean gap size of 283 m2 and;50%gaps of 10–15 years old.Gaps created by natural single-tree falls were significantly more numerous,and their mean size was significantly smaller than those resulting from artificial causes or multiple-tree falls.Gap size correlated with the basal area of felled trees,but it did not correlate with the number of tree falls.While tree fall basal area was significantly positively correlated to the seed-originated seedling to resprout ratio,it was negatively correlated,along with gap area and the basal size of retained trees,to seedling growth.The relative seedling density of Terminalia alata increased with increases in gap areas,while that of S.robusta decreased with increases in tree fall basal area,thereby lowering the plot-level dominance.However,the relative seedling densities of Eugenia operculata and Syzigium cumini were negatively and positively correlated,respectively,with tree fall basal area.Indra Prasad Sapkota Per Christer Oden 2009Journal of Plant Ecology2009,2,1:4
6Progresses in restoration of post-mining landscape in Africa显示文摘Mining alters the natural landscape and discharges large volumes of wastes that pose serious pollution hazards to the environment, to human health and to agriculture. As a result, the recent 2 decades have witnessed a global surge in research on post-mining landscape restoration, yielding a suite of techniques including physical, chemical, biological(also known as phytoremediation) and combinations. Despite the long history of mining in Africa, no systematic review has summarized advances in restoration research and practices after mining disturbance. Thus, the aim of this review was to document the state-of-knowledge and identify gaps in restoration of postmining landscape in Africa through literature review. We found that:(1) there has been substantial progress in identifying species suitable for phytoremediation;(2) few studies evaluated the feasibility of organic amendments to promote autochthonous colonization of mine wastelands or growth of planted species; and(3) restoration of limestone quarries in Kenya, sand mining tailings in South Africa,and gold mine wasteland in Ghana are successful cases of large-scale post-mining restoration practices in Africa.However, the pace of post-mining landscape restoration research and practice in Africa is sluggish compared to other parts of the global south. We recommend:(1)mainstreaming the restoration of mine wastelands in national research strategies and increased development planning to make the mining sector ‘‘Green'';(2) inventory of the number, area, and current status of abandoned mine lands;(3) expanding the pool of candidate species for phytostabilization;(4) further evaluating the phytostabilization potential of organic amendments, e.g., biochar;(5)assessing the impacts of mining on regional biodiversity.Emma Sandell Festin Mulualem Tigabu Mutale N.Chileshe Stephen Syampungani Per Christer Oden 2019Journal of Forestry Research2019,30,2:4
7再灌注损伤在挤压综合征发病机理中的作用显示文摘挤压综合症的死亡率和发病率较高,其病理生理过程尚不清楚,但再灌注诱导的损伤起有重要作用。再灌注损伤主要包括氧自由基释放、缺血肌内的钙大量积聚和白细胞浸润。鉴于不进行再灌注,缺血肌难以存活,其解救措施在于减少缺血再灌注损伤。Oden M 花天放 1992国外医学(创伤与外科基本问题分册)1992,13,2:4
8初诊2型糖尿病患者血浆FGF-21水平改变显示文摘目的:探讨2型糖尿病(T2DM)患者血浆FGF-21水平变化及其与体重指数(BMI)、腰臀比(WHR)、血糖、血浆胰岛素水平等的关系。方法:采用放射免疫法测定了T2DM患者及正常人血浆FGF-21水平,并分析了血浆FGF-21水平与BMI、WHR、胰岛素抵抗指数(HOMA—IR)、胰岛β细胞分泌指数(HOMA—IS)、血脂、血糖、血浆胰岛素和游离脂肪酸(FFA)水平等的关系。结果:T2DM患者血浆FGF-21水平明显高于对照组(1.82±0.64VS1.53±0.60ng/L,P〈0.05)。血浆FGF-21水平与FFA、HOMA—IS呈明显正相关(r=0.36,r=0.33,均P〈0.05),与WHR、空腹血糖(FBG)、负荷后2h血糖(2hPBG)呈明显负相关(r=-0.23,r=-0.39,r=-0.28,均P〈0.05)。多元回归分析表明腰臀比(WHR)是影响血浆FGF-21水平的独立相关因素。结论:血浆FGF-21水平的改变与代谢紊乱有关.并可能参与了T2DM的发生和发展。陈文雯 李伶 杨刚毅 李钶 杨媚 齐晓亚 朱伟 孙迅 唐毅 刘华 Guenther oden 2007内分泌外科杂志2007,1,2:2
9Pre-sowing treatment for breaking dormancy in Acer velutinum Boiss. seed lots显示文摘Acer velutinum Boiss is a valuable tree species native to Iran, and its seeds possess physiological dormancy that hampers seedling production in the nursery for large-scale reforestation efforts. The aim of this study was to determine the optimal dormancy breaking treatments for A. velutinum seeds. We conducted a factorial experiment involving six seed lots collected along an elevation gradient from 300 to 1800 m at 300 m interval and four cold-moist stratification periods (0, 4, 8 and 16 weeks) at 4℃ and 70% relative humidity. The result shows that the germination of cold-moist stratified seeds was significantly (p < 0.0001) higher than the control for all seed lots. The highest germination capacity was recorded after 16 weeks of cold-moist stratification for all seed lots (68% 88% depending on the seed lot) except those collected from mid altitude sites (600 and 900 m) that germinated equally well (≥ 75%) after 4and 8-week of clod-moist stratification compared to the other seed lots. The mean germination time was significantly shorter (12 to 19 days, depending on the seed lot) for seeds stratified for 16 weeks than for untreated seeds. It can be concluded that: (1) cold-moist stratification for 16 weeks is the best pre-sowing treatment for breaking dormancy in A. velutinum seeds; and (2) seeds should be collected from mid altitude sites (600 and 900 m) to get more than 80% germination within 15 days, and these seed lots even required shorter cold-moist stratification period(eight weeks) than other seed lots.Mostafa Farhadi Mulualem Tigabu Alireza Ghasemi Arian Mehdi Sharifani Abolfazl Daneshvar Per Christer Oden 2013Journal of Forestry Research2013,24,2:2
10Five-year clinical evaluation of procera All-ceram crowns显示文摘Oden A Andersson M Krystek-Ondracek I 1998J Prosthet Dent1998,80,2:2
11西非Sudanian稀树草原森林在旱季火烧温度、持续时间及对种子萌发的影响(英文)显示文摘在西非Sudanian稀树草原森林,计划火烧是一种森林管理措施。开展试验评价火烧季节和不同垂直探测点对最大火温度以及60℃以上火温持续时间的影响,这样的温度对植物组织来说是致命的。设定的火烧季节包括:季初火烧-旱季初期(12月初)、季中火烧-旱季最干旱的时候(1月中旬)、季末火烧-旱季末期(3月末)。调查了不同季节火烧对3种具有社会-经济价值的树种过火后种子萌发的影响。结果表明,最大燃烧温度和火烧持续时间在旱季不同的时期火烧和垂直探测位置均存在显著差异(p<0.001)。火烧初期地面20cm的火温最高、持续时间最长,火烧中期和末期地表温度最高、持续时间最长。这种差异影响不同土壤深度的种子的萌发过程。讨论了当前林业管理措施中的一些心得。Sidzabda Djibril Dayamba Patrice Savadogo Didier Zida Louis Sawadogo Daniel Tiveau Per Christer Oden 2010Journal of Forestry Research2010,21,4:2
12Modification of Cullender and Smith equation for more accurate bottom hole pressure calculation in gas wells显示文摘ODEN R D JENNINGS J W 1988Society of Petroleum Engineers1988,35,3:1
13Spatial autocorrelation in biology显示文摘Sokal R R Oden N L 1978Methodology Biol J Linn Soc1978,10,:1
14A meta-analysis of the effect of strontium ranelate on the risk ot' vertebral and non-vertebral fracture in postmenopausal osteoporosis and the interaction with FRAXR显示文摘Kanis JA Johansson H Oden A Osteoporos Int0,22,8:1
15Carotid artery intima-media thickness in patients with type 2 diabetes mellitus and impaired glucose tolerance: a systematic review显示文摘Brohall G Oden A Fagerberg B 2006Diabet Meal2006,23,6:1
16Spatial autocorrelation in biology: 1 Mtehodology显示文摘Sokal R R Oden N L 1978Biological Journal of Linnean Society1978,10,2:1
17Coppicing ability of dry miombo woodland species harvested for traditional charcoal production in Zambia:a win–win strategy for sustaining rural livelihoods and recovering a woodland ecosystem显示文摘The miombo woodland is one of the most extensive woodlands in Africa, supporting livelihoods based on biomass fuel for millions of rural people. However, there are growing concerns about the sustainability of harvesting for biomass fuel(mainly charcoal). Thus, the aim of this study was to examine whether regeneration by coppice is a viable option for sustainably managing miombo woodlands for biomass fuel production. We tested the hypotheses that(1) species, stump diameter, stump height and time since cutting significantly affect the number of sprouts per cut stump(coppice density) and mean sprout height(shoot vigour) and(2) higher coppice density reduces shoot vigour due to competition among coppice shoots in a given stump. In an inventory in areas that were harvested for charcoal production by the local people, 369 stumps of 11 species were recorded with mean coppice stumps ranged from 6 to 84. The mean coppice density ranged from 5 to 8 shoots per stump while the mean height of coppice shoots ranged from 46 to 118 cm with marked interspecific variations. Stump size was significantly and positively correlated with coppice density for some of the species, but not with shoot vigour for the majority of the species. However, shoot vigour was significantly positively correlated to time since cutting of trees for nearly half of the species. Coppice density had a significant negative correlation with shoot vigour for two species, and a positive correlation for one species. In conclusion, the results provide evidence about the importance of coppice management as a win–win strategy for sustaining charcoal-based rural livelihoods and recovering the miombo woodland ecosystem.Stephen Syampungani Mulualem Tigabu Nalukui Matakala Ferdinand Handavu Per Christer Oden 2017Journal of Forestry Research2017,28,3:1
18Carotid artery intima-media thickness in patients with type 2 diabetes mellitus and impaired glucose tolerance:a systematic review显示文摘Brohall G Oden A Fagerberg B 2006Diabetic Medicine2006,23,6:1
19Numerical analysis of certain contact problems with non-classical friction laws显示文摘ODEN J T PIRES E B 1983Computers & Structures1983,16,14:1
20Nonlocal and nonlinear friction laws and variational principles for contact problems in elasticity显示文摘Oden J T Pire E B 1983J of Appl Mech ASME1983,50,:1
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