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Acta Mathematica Sinica,English Series 1988年第2期4卷 189-192页

作者： Peter.hilton Department of Mathematical Sciences State University of New York

Endemic fossil seed plants from China and a reassessment of coniferophyte phylogeny

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Progress in Natural Science:Materials International 1999年第10期9卷 48-55页

作者： Jason hilton,王士俊,陈之端,田宝霖 Department of Palaeobotany Institute of Botany Chinese Academy of Sciences Beijing 100093 China Department of Palaeobotany Institute of Botany Chinese Academy of Sciences Beijing 100093 China Laboratory of Systematics and Evolution Institute of Botany Chinese Academy of Sciences Beijing 100093 China China University of Mining and Technology ( Beijing) Beijing 100083 China

recent palaeobotanical studies have provided new and important evidence on Chinese fossil plants. The majority of these fossils are distinct from fossil floras known from other geographical regions. However, remarkably few of these fossil plants have been successfully incorporated into cladistic analyses, to assess their importance on evolutionary relationships among major plant groups. For the first time our investigation incorporates three endemic Chinese fossil plant species into a cladistic analysis of the seed plants. These plants have been documented and reconstructed in detailed investigations of Palaeozoic coal balls from the Taiyuan Formation and are named Shanxioxylon sinensis , Shanx-ioxylon taiyuanensis and Pennsylvanioxylon tianii respectively. Previous investigations indicate that these plants belong to the now extinct Cordaitalean seed plants although they share many features with certain fossil conifers. As such, they are likely to be of significance to the ongoing and currently unresolv

关键词： phytogeny evolution coniferophyte Coniferales Cordaitales

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烃类气体非生物成因及其判识标志

新疆石油地质 2017年第2期38卷 245-252页

作者：胥旺郑国东马向贤范桥辉 david r.hilton 徐胜甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室兰州730000 中国科学院大学地球科学学院北京100049 美国加州大学圣地亚哥分校斯克里普斯海洋研究所加利福尼亚州920930244

总结和评述了烃类气体非生物成因的代表性观点,以及最新的研究动态和进展。在蛇纹石化非生物成因烷烃理论的基础之上,分析了非生物成因烃类气体可能生成的地质背景。已经发现的非生物成因天然气的形成与运移,大部分都位于构造活动强烈... 详细信息

总结和评述了烃类气体非生物成因的代表性观点,以及最新的研究动态和进展。在蛇纹石化非生物成因烷烃理论的基础之上,分析了非生物成因烃类气体可能生成的地质背景。已经发现的非生物成因天然气的形成与运移,大部分都位于构造活动强烈、地质背景复杂的区域,如何将化学反应机理及其反应条件与具体的地质条件相匹配,是涉及非生物成因天然气成藏至关重要的科学问题。讨论了已有的多种非生物成因烃类气体的判别指标和划分模式,尽管甲烷δ^(13)C的典型分布区间对非生物成因烃类气体的识别非常重要,但需要结合具体的地质背景条件给予合理解释,非生物成因甲烷δ^(13)C可能具有更宽泛的分布区间。实例分析结果表明,综合利用烃类气体碳、氢同位素特征来判别烃类气体的成因具有明显的优越性。

关键词：烃类气体非生物成因蛇纹石化碳同位素氢同位素判别指标

Woody plant assemblage and the structure of miombo woodland along a disturbance gradient in Hurungwe, Zambezi Valley, Zimbabwe

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Journal of Forestry research 2021年第5期32卷 1867-1877页

作者： Tatenda Gotore hilton GTNdagurwa Shakkie Kativu Denis Gautier Laurent Gazull Forest research Centre P.O.Box HG595HighlandsHarareZimbabwe Department of Forest resources and Wildlife Management Faculty of Applied ScienceNational University of Science and TechnologyP.O.Box AC 939 AscotBulawayoZimbabwe School of Animal Plant and Environmental SciencesUniversity of the WitwatersrandPrivate Bag 3Wits 2050South Africa Department of Biological Sciences Faculty of ScienceUniversity of ZimbabweP.O.Box MP167 Mount PleasantHarareZimbabwe Forêt et Sociétés Univ MontpellierCIRADTA C-105/DCampus international de Baillarguet34398 Montpellier Cedex 5France

Miombo woodlands near human settlements are under significant pressures from human activities,with negative consequences on their structure and *** studies are limited,we assessed the structure and species composition of a portion of miombo woodland along an increasing disturbance gradient from a national park,through a buffer zone to communal lands in northeast *** concentric plots of 2 and 11 m radii were established in each area to record woody species composition,diameter,height,basal area,density and volume as well as evidence of *** of site,growth stage and their interaction on vegetation diversity and structural parameters were tested using a general linear model(GLM).Principal component analysis(PCA) tested the association between species and site and ANOVA the differences in the level of disturbance across *** diversity did not differ between sites except for evenness,which increased with *** and richness were greater in seedlings and saplings than mature trees across sites,*** and mature tree diameters differed significantly between *** and density of mature trees declined with increasing disturbance while seedling densities peaked at intermediate disturbance levels(buffer zone).Tree harvesting,was more evident in the buffer zone and in the communal area relative to the national *** contrast,fire frequency was greater in the national park and in the buffer zone relative to the communal *** results of this study identify a true miombo woodland dominated by Brachystegia boehmii with a stable population,as illustrated by an inverse-J shape in diameter class distribution on all sites,and that these woodlands are generally resilient to disturbances,maintaining similar species composition and structure at various levels of ***,continued monitoring of disturbance levels and miombo woodland response is recommended to ensure sustainable utilisation of

关键词： Miombo woodlands cComposition Diversity Structure Anthropogenic disturbances

The influence of hydrogel soil amendment on the survival and growth of newly transplanted Pinus patula seedlings

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Journal of Forestry research 2018年第1期29卷 103-109页

作者： Ada Mudhanganyi hilton G.T.Ndagurwa Carlton Maravanyika robert Mwase Department of Forest resources and Wildlife Management Faculty of Applied Science National University of Science and Technology Forest Ecology Laboratory Faculty of Applied ScienceNational University of Science and Technology Stapleford Forest Allied Timbers Limited

Hydrogel amendments have been used to improve seedling survival and establishment particularly in dry environments. However, their effect on survival and growth of newly transplanted seedlings under varying water stress conditions is poorly known. In this regard, we examined the effects of Aqua Matrix Forestry~？, a potassium-based water-absorbent polymer, on the survival and early growth of Pinus patula seedlings planted in early-,mid-and late-dry season in the eastern highlands of Zimbabwe. The late-dry season was hotter and received more rainfall than the early-and mid-dry season. Hydrogel increased seedling survival by 34 and 22% in the mid-and late-dry season, respectively. Also, hydrogel-treated seedlings were significantly taller than untreated seedlings（P ／ 0.001）. The height to root collar diameter ratio of hydrogel-treated seedlings was greater than that of untreated seedlings only in the mid-dry season. In conclusion, increase in survival and early growth of hydrogel-treated seedlings suggests that hydrogels can be used to extend planting beyond the rainy season to include the dry months, a feat previously unattainable due to high seedling mortality. Further, these findings reflect similar findings with other hydrogels, suggesting that improved seedling survival and plant performance may be a general consequence of hydrogel amendments.

关键词： Hydrogel Pinus patula reforestation Seedling Survival

Using accelerometry to compare costs of extended migration in an arctic herbivore

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Current Zoology 2017年第6期63卷 667-674页

作者： Mitch D. WEEGMAN Stuart BEArHOP Geoff M. hilton Alyn J. WALSH Larry GrIFFIN Yehezkel S. rESHEFF ran NATHAN Anthony david Fox Centre for Ecology and Conservation College of Life and Environmental Sciences University of Exeter Cornwall Campus Penryn TR109EZ UK Wildfowl & Wetlands Trust Slimbridge Gloucester GL2 7BT UK National Parks and Wildlife Service Wexford Wildfowl Reserve North Slob Wexford Ireland Wildfowl & Wetlands Trust Caerlaverock Wetland Centre Eastpark Farm Caerlaverock Durnfriesshire DG1 4RS UK Department of Ecology Evolution and Behavior The Hebrew University of Jerusalem Givat Ram Jerusalem 91904 Israel Department of Bioscience Aarhus University Kale Grenavej 14 RФnde DK-8410 Denmark Present address: School of Natural resources University of Missouri Columbia MO 65211 USA.

Understanding how individuals manage costs during the migration period is challenging because individuals are difficult to follow between sites; the advent of hybrid Global Positioning Systemacceleration （ACC） tracking devices enables researchers to link spatial and temporal attributes of avian migration with behavior for the first time ever. We fitted these devices on male Greenland white-fronted geese Anser albifrons flavirostris wintering at 2 sites （Loch Ken, Scotland and Wexford, Ireland） to understand whether birds migrating further during spring fed more on winter- ing and staging areas in advance of migration episodes. Although Irish birds flew significantly further （ca. 300 kin） than Scottish birds during spring, their cumulative hours of migratory flight, flight speed during migration, and overall dynamic body ACC （i.e., a proxy for energy expenditure） were not significantly different. Further, Irish birds did not feed significantly more or expend significantly more energy in advance of migration episodes. These results suggest broad individual plasticity in this species, although Scottish birds arriving on breeding areas in Greenland with greater energy stores （because they migrated less） may be better prepared for food scarcity, which might increase their reproductive success.

关键词： avian migration cost energy expenditure global positioning system-acceleration tracking devices Greenland whitefronted geese individual decision-making proportion of time feeding.

Behavioural and energetic consequences of competition among three overwintering swan(Cygnus spp.)species

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Avian research 2021年第4期12卷 707-721页

作者： Kevin A.Wood Julia L.Newth Geoff M.hilton Eileen C.rees Wildfowl&Wetlands Trust SlimbridgeGloucestershire GL27BTUnited Kingdom Centre for Ecology and Conservation/Environment and Sustainabil-ity Institute College of Life and Environmental SciencesUniversity of ExeterExeter TR109EZUnited Kingdom Department of Zoology University of CambridgeDowning StreetCambridge CB23EJUnited Kingdom

Background:Winter numbers of the northwest European population of Bewick's Swans(Cygnus columbianus bewickii)declined recently by c.40%.During the same period,numbers of two sympatric and ecologically-similar congeners,the Mute Swan(Cygnus olor)and Whooper Swan(Cygnus cygnus)showed increases or *** has been suggested that these opposing population trends could have a causal relationship,as Mute and Whooper Swans are larger and competitively dominant to Bewick's Swans in foraging *** so,effects of competition of Mute and Whooper Swans on Bewick's Swans should be detectable as measurable impacts on behaviour and ***:Here,we studied the diurnal behaviour and energetics of 1083 focal adults and first-winter juveniles("cygnets")of the three swan species on their winter grounds in eastern *** analysed video recordings to derive time-activity budgets and these,together with estimates of energy gain and expenditure,were analysed to determine whether individual Bewick's Swans altered the time spent on key behaviours when sharing feeding habitat with other swan species,and any consequences for their energy expenditure and net energy ***:All three swan species spent a small proportion of their total time(0.011)on aggressive interactions,and these were predominantly intraspecific(≥0.714).Mixed-effects models indicated that sharing feeding habitat with higher densities of Mute and Whooper Swans increased the likelihood of engaging in aggression for cygnet Bewick's Swans,but not for *** levels of interspecific competition decreased the time spent by Bewick's Swan cygnets on foraging,whilst adults showed the opposite *** among low densities of conspecifics(re time on vigilance in the presence of higher densities of Mute and Whooper Swans,whilst individuals within higher density Bewick's Swan flocks showed the opposite ***,we found no evide

关键词： Avian behaviour Energy expenditure Ethology Interference competition Interspecific interactions Time activity budgets Video observations

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东京公寓楼因遮挡富士山景观遭到拆除

商业周刊（中文版） 2024年第10期 43-43页

作者： Sarah hilton Mia Glass 孟洁冰(译) 不详

东京郊区一座新建的住宅楼将在公寓原定交付给买家的前一个月被拆除,因为愤怒的当地居民投诉称,这栋楼遮挡了他们的富士山景观。据建筑商积水住宅有限公司(Sekisui House Ltd.)称,这栋位于东京国立市郊区富士见街道(意为“看到富士山的... 详细信息

东京郊区一座新建的住宅楼将在公寓原定交付给买家的前一个月被拆除,因为愤怒的当地居民投诉称,这栋楼遮挡了他们的富士山景观。据建筑商积水住宅有限公司(Sekisui House Ltd.)称,这栋位于东京国立市郊区富士见街道(意为“看到富士山的地方”)的10层公寓楼共有18套住宅,每套价格从7000万日元到1亿日元不等(约合44.5万到63.6万美元)。

关键词：公寓楼建筑商 House 当地居民拆除住宅遮挡富士山

A New Ambassador for Brand China

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China Today 2013年第6期62卷 40-41页

作者： WILLIAM hilton PrC Macro Advisors

THE recent trip abroad by Chi- na＇s leading couple, President Xi Jinping and his wife Peng Liyuan, attracted global media attention. There are many aspects to write about, but perhaps most inter- esting from an economic point of view is the positive impact of China＇s new first lady on China as both a global and domestic brand. In Europe,

关键词：中国品牌正面影响习近平经济

Crazy for real Estate

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China Today 2013年第5期62卷 60-61页

作者： WILLIAM hilton PrCMacro Advisors

TrENDS in the real estate mar- kets in cities across China have defied new control measures. Transaction volumes have spiked, and prices are heading up rather than stabilizing as intended. The do- mestic media has given wide coverage to home buyers queuing literally for at local authorities offices to get official stamps on their documents and pay relevant tax- es before the newest measures take effect at the end of March.

关键词：房地产地方政府交易量覆盖面购房者