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Contrasting vegetation changes in dry and humid regions ofthe Tibetan Plateau over recent decades

Research in Cold and Arid Regions 2018年第6期10卷 482-492页

作者： RuiQing Li YanHong gao deliang Chen YongXin Zhang SuoSuo Li Key Laboratory of Land-surface Process and Climate Change in Cold and Arid Regions Northwest Institute of Ecoenvironment and Resources Chinese Academy of Sciences Lanzhou Gansu 730000 China Inner Mongolia Autonomous Regional Meteorological Observatory Hohhot Inner Mongolia 010051 China Regional Climate Group Department of Earth Sciences University of Gothenburg Gothenburg Sweden Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100101 China National Center for Atmospheric Research Boulder Colorado U.S.A.

An overall greening over the Tibetan Plateau(TP) in recent decades has been established through analyses of remotely sensed Normalized Difference Vegetation Index(NDVI), though the regional pattern of the changes and associated drivers remain to be explored. This study used a satellite Leaf Area Index(LAI) dataset(the GLASS LAI dataset) and examined vegetation changes in humid and arid regions of the TP during 1982–2012. Based on distributions of the major vegetation types, the TP was divided roughly into a humid southeastern region dominated by meadow and a dry northwestern region covered mainly by steppe. It was found that the dividing line between the two regions corresponded well with the lines of mean annual precipitation of 400 mm and the mean LAI of 0.3. LAI=0.3 was subsequently used as a threshold for investigating vegetation type changes at the interanual and decadal time scales: if LAI increased from less than 0.3 to greater than0.3 from one time period to the next, it was regarded as a change from steppe to meadow, and vice versa. The analysis shows that changes in vegetation types occurred primarily around the dividing line of the two regions, with clear growth(reduction) of the area covered by meadow(steppe), in consistency with the findings from using another independent satellite product. Surface air temperature and precipitation(diurnal temperature range) appeared to contribute positively(negatively) to this change though climate variables displayed varying correlation with LAI for different time periods and different regions.

关键词： Tibetan Plateau vegetation change leaf area index climate change

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Could the Recent Taal Volcano Eruption Trigger an El Ni?o and Lead to Eurasian Warming?

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Advances in Atmospheric Sciences 2020年第7期37卷 663-670页

作者： Fei LIU Chen XING Jinbao LI Bin WANG Jing CHAI Chaochao gao Gang HUANG Jian LIU deliang CHEN School of Atmospheric Sciences and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat-sen UniversityZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China Earth System Modeling and Climate Dynamics Research Center Nanjing University of Information Science and TechnologyNanjing 210044China Department of Geography University of Hong KongPokfulamHong Kong Department of Atmospheric Sciences and International Pacific Research Center University of Hawaii at ManoaHonoluluHI 96822USA Department of Environmental Science Zhejiang UniversityHangzhou 310058China State key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Key Laboratory for Virtual Geographic Environment Ministry of EducationJiangsu Provincial State Key Laboratory Cultivation Base of Geographical Environment EvolutionSchool of Geography ScienceNanjing Normal UniversityNanjing 210023China Department of Earth Sciences University of GothenburgGothenburg 40530Sweden

The Taal Volcano in Luzon is one of the most active and dangerous volcanoes of the Philippines.A recent eruption occurred on 12 January 2020(Fig.1a),and this volcano is still active with the occurrence of volcanic *** eruption has become a deep concern worldwide,not only for its damage on local society,but also for potential hazardous consequences on the Earth’s climate and environment.

关键词： Volcano Philippines worldwide

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In situ FTIR investigation on phase transformations in BN nanoparticles

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Chinese Science Bulletin 2005年第24期50卷 2827-2831页

作者： YU Lili gao Bin CHEN Zhi SUN Chuantao CUI deliang WANG Chengjian WANG Qilong JIANG Minhua State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China School of Physics and Microelectronics Shandong University Jinan 250100 China School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China

Fourier transformation infrared spectrum (FTIR) was employed to investigate phase transformation of nanoparticle BN, containing eBN, rBN, wBN and cBN, in which eBN and rBN are the main components. We found that part of eBN was converted into rBN at 200―350℃. At and above 400℃, eBN transformed into wBN, and some of wBN were converted into cBN simultaneously. This conclusion is supported by the results from high- resolution transmission electron microscopic (HRTEM) and Raman spectroscopic measurements. In this work, the converting processes be- tween different BN phases were continuously monitored by in situ FTIR spectroscopy. The results will be helpful for synthesis of cBN at moderate conditions.

关键词：氮化硼纳米粒子相变傅里叶变换红外光谱原位监测

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99%矿物油乳油对苹果树红蜘蛛的防治效果研究

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山东化工 2017年第24期46卷 101-102页

作者：高德良庄占兴李德军刘钰唐广新庄治国王龙龙徐娜娜山东省农药科学研究院山东省化学农药重点实验室山东济南250100

[目的]为明确99%矿物油乳油对苹果树红蜘蛛的防治效果,为该药剂的科学合理使用提供依据。[方法]以常用药剂20%哒螨灵可湿性粉剂和1.8%阿维菌素乳油为对照药剂,在苹果树上进行了该药剂防治红蜘蛛的田间药效试验。[结果]药后2天,99%矿物... 详细信息

[目的]为明确99%矿物油乳油对苹果树红蜘蛛的防治效果,为该药剂的科学合理使用提供依据。[方法]以常用药剂20%哒螨灵可湿性粉剂和1.8%阿维菌素乳油为对照药剂,在苹果树上进行了该药剂防治红蜘蛛的田间药效试验。[结果]药后2天,99%矿物油乳油4950、6600、9900mg/kg处理防效分别为78.60%、83.26%、86.77%,低、中剂量处理防效低于对照药剂处理;药后7天,99%矿物油乳油各处理防效与对照药剂处理基本相当;药后14天,99%矿物油乳油4950、6600、9900mg/kg处理防效分别为82.65%、86.68%、91.26%,中、高剂量处理防效优于对照药剂处理。[结论]99%矿物油乳油对苹果树红蜘蛛有良好的速效性和优异持效性,对作物安全,并且对苹果树蚜虫有一定的兼治作用。

关键词： 99%矿物油乳油苹果树红蜘蛛防治效果

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Substrate tuned reconstructed polymerization of naphthalocyanine on Ag(110)

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Chinese Physics B 2022年第1期31卷 107-111页

作者： Qi Zheng Li Huang deliang Bao Rongting Wu Yan Li Xiao Lin Shixuan Du Hong-Jun gao Beijing National Center for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Department of Physics and Astronomy and Department of Electrical Engineering and Computer Science Vanderbilt UniversityNashvilleTN 37235USA Songshan Lake Materials Laboratory Dongguan 523808China

The linkage structures between monomers make great influence on the properties of *** synthesis of some special linkage structures can be challenging,which is often overcome by employing special reaction ***,we build dihydropentalene linkage in poly-naphthalocyanine on Ag(110)*** tunneling microscopy(STM)and non-contact atomic force microscopy(nc-AFM)measurements confirm the dihydropentalene linkage structure and a possible formation path with reconstruction steps is *** controlled experiment on Ag(100)surface shows no dihydropentalene structures formed,which indicates the grooved substrate is necessary for the *** work provides insights into the surface restricted reactions that can yield special structures in organic polymers.

关键词： on-surface polymerization reconstruction scanning tunneling microscopy noncontact atomic force microscopy

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厚松散层下高强度综放开采地表沉陷规律研究

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煤炭技术 2024年第6期43卷 24-27页

作者：贺丹段中会姬永涛王鑫付德亮高翔张丽维刘峰自然资源部煤炭资源勘查与综合利用重点实验室西安710026 陕西省煤田地质集团有限公司西安710026 陕西天地地质有限责任公司西安710054 西安科技大学西安710054 陕西省一八五煤田地质有限公司陕西榆林719053

在陕北地区浅埋厚煤层、厚松散层地质条件下,以某大型煤矿大采高综采工作面采动地表沉降监测数据为基础,选取沿工作面走向、倾向两条观测线为研究对象,分析研究各观测点全周期下沉变化及对应时空关系,采用数理统计、公式计算、数据拟合... 详细信息

在陕北地区浅埋厚煤层、厚松散层地质条件下,以某大型煤矿大采高综采工作面采动地表沉降监测数据为基础,选取沿工作面走向、倾向两条观测线为研究对象,分析研究各观测点全周期下沉变化及对应时空关系,采用数理统计、公式计算、数据拟合等方法确定地表移动动态变化相关参数,探讨采动工作面的地表沉降特征和变化规律。结果显示:工作面采动初期上覆岩层的运动范围已波及到地表,随着工作面不断推进,其地面影响范围一直在超前;当工作面回采完成时,下沉量迅速衰减,逐步趋于稳定。走向线最大下沉值3 715 mm,倾向线最大下沉值3 327 mm,工作面推进在400~600 m,下沉速度超过200 mm/d,最大可达268 mm/d。地表沉降系数0.58,起动距102.6 m,超前影响角54.9°,最大下沉速度滞后角71.8°。地表移动持续时间282 d,起动阶段时间短,仅为18 d,活跃阶段移动速度大、变形剧烈,衰退阶段持续时间较长达199 d,反映了浅埋厚松散层综放高强度开采条件下,地表移动发展快、稳定也快的特征。

关键词：浅埋厚煤层厚松散层高强度综放开采地表沉降动态参数

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The antioxidant methyl gallate inhibits fungal growth and deoxynivalenol production in Fusarium graminearum

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Food Production, Processing and Nutrition 2021年第1期3卷 326-334页

作者： Xin Liu Xin Fang Shuang Wang deliang Wu Tao gao Yin-Won Lee Sherif Ramzy Mohamed Fang Ji Jianhong Xu Jianrong Shi Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and QualityMinistry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation(Nanjing)Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and NutritionJiangsu Academy of Agricultural SciencesNanjing 210014JiangsuChina School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina School of Agricultural Biotechnology Seoul National UniversitySeoul 08826Republic of Korea Department of Food Toxicology and Contaminant National Research Centre of EgyptGiza 12411Egypt

Production of the Fusarium toxin deoxynivalenol(DON)is associated with oxidative stress and has been indicated to be part of an adaptive response to oxidative stress in the important wheat fungus Fusarium *** this study,we found that the antioxidant methyl gallate(MG)displays inhibitory effects against mycelial growth,conidial formation and germination,and DON biosynthesis in *** in a dose-dependent *** with 0.05%(w/v)MG resulted in an abnormal swollen conidial *** expression of the TRI genes involved in DON biosynthesis was significantly reduced,and the induction of Tri1-GFP green fluorescence signals in the spherical and crescent-shaped toxisomes was abolished in the MG-treated ***-Seq analysis of MG-treated *** showed that 0.5%(w/v)MG inhibited DON production by possibly altering membrane functions and oxidoreductase *** with the observations that MG treatment decreases catalase,POD and SOD activity in *** results of this study indicated that MG displays antifungal activity against DON production by modulating its oxidative *** together,the current study revealed the potential of MG in inhibiting mycotoxins in ***.

关键词： Fusarium graminearum Antioxidant methyl gallate Deoxynivalenol production Mechanism of action

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辽东连山关(3075)铀矿床氢氧同位素特征及矿床成因探讨

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现代矿业 2024年第9期40卷 64-68页

作者：汤志帅何德亮陈琳梁西伟姜晶晶高存山五莲县不动产交易登记中心五莲县土地储备中心日照市政务服务中心五莲县自然资源执法监察大队山东省第七地质矿产勘查院

连山关地区位于华北克拉通北缘铀成矿带,是辽东地区主要铀矿远景区之一,连山关(3075)铀矿床是品位最富的热液型铀矿床之一。为了探讨该矿床成矿流体的来源,分析成矿模式,为矿区外围找矿提供依据,对比研究了不同成矿阶段的绢云母中氢氧... 详细信息

连山关地区位于华北克拉通北缘铀成矿带,是辽东地区主要铀矿远景区之一,连山关(3075)铀矿床是品位最富的热液型铀矿床之一。为了探讨该矿床成矿流体的来源,分析成矿模式,为矿区外围找矿提供依据,对比研究了不同成矿阶段的绢云母中氢氧同位素特征。结果表明,成矿早阶段绢云母中的δ^(18)O_(H_(2)O)值为7.04‰~7.24‰,平均值为7.14‰,δD_(H_(2)O)值为-45.42‰~-40.62‰,平均值为-43.02‰;主成矿阶段绢云母中的δD_(H_(2)O)值为4.52‰~6.42‰,平均值为5.47‰,δD_(H_(2)O)值为-16.15‰~-15.85‰,平均值为-16.00‰;成矿晚阶段绢云母中的δ^(18)O_(H_(2)O)值为1.46‰,δD_(H_(2)O)值为4.21‰。区域变质变形作用促使辽河群矿物脱水形成变质流体,变质流体沿着断裂带从辽河群经接触带流向连山关岩体内部。

关键词：连山关(3075)铀矿床变质流体氢氧同位素

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森林生态系统碳汇:概念、时间效应与提升途径

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应用生态学报 2024年第9期35卷 2313-2321页

作者：朱教君高添于立忠杨凯孙涛卢德亮刘志华楚瀛东张金鑫滕德雄朱苑孙一荣王绪高王高峰中国科学院沈阳应用生态研究所森林生态与保育重点实验室(中国科学院)/辽宁清原森林生态系统国家野外科学观测研究站沈阳110016 辽宁省公益林经营管理重点实验室沈阳110016 科尔森林痕量气体与同位素通量监测研发联合实验室沈阳110016 中国科学院大学北京101408 美国克莱姆森大学林业与环境保护系南卡罗来纳州克莱姆森29634

工业革命以来,广泛使用化石燃料向大气中排放大量二氧化碳(CO_(2)),导致气候变暖、极端气候事件频发。为有效缓解气候变化,国际社会在减少碳排放和清除大气中CO_(2)等方面做了各种努力。2020年9月我国政府郑重承诺:CO_(2)排放力争于203... 详细信息

工业革命以来,广泛使用化石燃料向大气中排放大量二氧化碳(CO_(2)),导致气候变暖、极端气候事件频发。为有效缓解气候变化,国际社会在减少碳排放和清除大气中CO_(2)等方面做了各种努力。2020年9月我国政府郑重承诺:CO_(2)排放力争于2030年前达到峰值、2060年前实现碳中和(“双碳”目标)。根据目前已有预测结果,至2060年碳中和时,在化石能源使用、生产、生活所有排放均达到最低条件下,我国不得不排放的CO_(2)约为目前排放总量的1/4,这些碳排放主要由生态系统吸收;即便达到碳中和,工业革命以来大气中增加的约140 ppm CO_(2)仍然需要由生态系统清除。森林是陆地生态系统的主体,其碳汇能力占陆地生态系统碳汇的80%以上;但是,由于森林生态系统的长周期性、复杂性与动态变化性,生态系统碳汇存在基本概念不清、时间效应不明等问题,导致森林碳汇能力提升技术受限、碳汇交易市场混乱等诸多问题。为此,本文首先从光合作用吸收CO_(2)固定在植物体内的过程,梳理了森林生态系统碳汇概念,结合地上-地下过程,介绍了森林生态系统碳汇形成机理。其次,分析了依赖时间尺度的森林生态系统碳汇变化过程,讨论了森林碳汇的时间效应,建议在尚未明确碳汇对缓解气候变化的时间效应前,使用“吨-年”(t-year)计量碳汇,并将3~6个月作为碳汇的最小计量时间(即,当年固碳的开始)。第三,明确了提升森林生态系统碳汇能力的主要途径:最大限度增加森林生态系统的碳汇能力(扩大森林面积、提高森林质量、增加森林土壤碳储量等);尽量延长森林生态系统碳汇维持时间,即降低“临时碳汇”(固定在森林生态系统中的碳一定时间内重新排放到大气中),增加“持久碳汇”(森林生态系统从大气中清除CO_(2),并在一定时间内不再排放到大气中;根据《巴黎协定》相关内容,碳汇计量的上限时间为2100年);推广维持持久碳汇的措施(用木材取代钢筋、水泥、塑料等,减少林火等干扰排放,将森林生物质以“生物炭”形态固定下来等)。最后,提出发展以人工智能(AI)为核心技术的“气候智慧林业(climate-smart forestry)”,以期为提升森林生态系统碳汇能力和可持续管理提供理论与技术支撑。

关键词：森林碳汇临时碳汇持久碳汇碳汇时间效应气候智慧林业

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Spatial and temporal variations and controlling factors of potential evapotranspiration in China:1956-2000

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Journal of Geographical Sciences 2006年第1期16卷 3-12页

作者： gao Ge CHEN deliang REN Guoyu CHEN Yu LIAO Yaoming Laboratory for Climate Studies National Climate Center China Meteorological AdministrationBeijing 100081 China Regional Climate Group Earth Sciences Centre Goeteborg University Goeteborg Sweden

Based on the climatic data of 580 stations in China during 1956 and 2000, potential evapotranspiration are calculated using the Penman-Monteith Method recommended by FAO. The spatial and temporal distributions of the potential evapotranspiration over China and the temporal trends of the regional means for 10 major river basins and whole China are analyzed. Through a partial correlation analysis, the major climate factors which affect the temporal change of the potential evapotranspiration are analyzed. Major results are drawn as follows： 1） The seasonal and annual potential evapotranspiration for China as a whole and for most basins show decline tendencies during the past 45 years; for the Songhua River Basin there appears a slightly increasing trend. 2） Consequently, the annual potential evapotranspirations averaged over 1980-2000 are lower than those for the first water resources assessment （1956-1979） in most parts of China. Exceptions are found in some areas of Shandong Peninsula, western and middle basins of the rivers in Southwest China, Ningxia Hui Autonomous Region as well as the source regions of the Yangtze and Yellow rivers, which may have brought about disadvantages to the exploration and utilization of water resources. 3） Generally, sunshine duration, wind speed and relative humidity have greater impact on the potential evapotranspiration than temperature. Decline tendencies of sunshine duration and/or wind speed in the same period appear to be the major causes for the negative trend of the potential evapotranspiration in most areas.

关键词： potential evapotranspiration Penman-Monteith formula trend controlling factors China

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