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The Value of Ecosystem Services from Giant Panda Reserves

CURRENT BIOLOGY 2018年第13期28卷 2174-+页

作者： Wei, fuwen Costanza, Robert Dai, Qiang Stoeckl, Natalie Gu, Xiaodong Farber, Stephen Nie, Yonggang Kubiszewski, Ida Hu, Yibo Swaisgood, Ronald Yang, Xuyu Bruford, Michael chen, Youping Voinov, Alexey Qi, Dunwu Owen, Megan Yan, Li Kenny, Daniel C. Zhang, Zejun Hou, Rong Jiang, Shiwei Liu, Hongbo Zhan, Xiangjiang Zhang, Li Yang, Biao Zhao, Lianjun Zheng, Xiaoguang Zhou, Wenliang Wen, Yali Gao, Heran Zhang, Wen Chinese Acad Sci Inst Zool Key Lab Anim Ecol & Conservat Biol Beijing 100101 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Chinese Acad Sci Ctr Excellence Anim Evolut & Genet Kunming 650223 Yunnan Peoples R China Australian Natl Univ Crawford Sch Publ Policy Canberra ACT 2601 Australia DeTao Masters Acad Shanghai 201620 Peoples R China Chinese Acad Sci Chengdu Inst Biol Chengdu 610041 Sichuan Peoples R China James Cook Univ Div Trop Environments & Soc Townsville Qld 4811 Australia Sichuan Stn Wildlife Survey & Management Chengdu 610081 Sichuan Peoples R China Univ Pittsburgh Grad Sch Publ & Int Affairs Pittsburgh PA 15260 USA Inst Conservat Res San Diego Zoo Global Escondido CA 92027 USA Cardiff Univ Sustainable Places Res Inst Cardiff CF10 3AX S Glam Wales Wanglang Natl Nat Reserve Wanglang 622550 Peoples R China Univ Twente ITC NL-7500 AE Enschede Netherlands Univ Technol Sydney Fac Engn & IT Ultimo NSW 2007 Australia Chengdu Res Base Giant Panda Breeding Chengdu 610081 Sichuan Peoples R China China West Normal Univ Key Lab Southwest China Wildlife Resources Conser Nanchong 637002 Peoples R China Beijing Normal Univ Coll Life Sci Beijing 100875 Peoples R China Beijing Forestry Univ Sch Econ & Management Beijing 100083 Peoples R China Sichuan Forestry Planning Inst Chengdu 610081 Sichuan Peoples R China

Ecosystem services (the benefits to humans from ecosystems) are estimated globally at $125 trillion/year [1, 2]. Similar assessments at national and regional scales show how these services support our lives [3]. All valuations recognize the role of biodiversity, which continues to decrease around the world in maintaining these services [4, 5]. The giant panda epitomizes the flagship species [6]. Its unrivalled public appeal translates into support for conservation funding and policy, including a tax on foreign visitors to support its conservation [7]. The Chinese government has established a panda reserve system, which today numbers 67 reserves [8, 9]. The biodiversity of these reserves is among the highest in the temperate world [10], covering many of China's endemic species [11]. The panda is thus also an umbrella species [12]-protecting panda habitat also protects other species. Despite the benefits derived from pandas, some journalists have suggested that it would be best to let the panda go extinct. With the recent downlisting of the panda from Endangered to Vulnerable, it is clear that society's investment has started to pay off in terms of panda population recovery [13, 14]. Here, we estimate the value of ecosystem services of the panda and its reserves at between US$2.6 and US$6.9 billion/year in 2010. Protecting the panda as an umbrella species and the habitat that supports it yields roughly 10-27 times the cost of maintaining the current reserves, potentially further motivating expansion of the reserves and other investments in natural capital in China.

关键词： cultural service ecosystem service value giant panda nature reserve provisioning service regulatory service

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Bond behaviour of CFRP-to-timber interfaces 6th

Bond behaviour of CFRP-to-timber interfaces

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6th International Conference on Structural Engineering, Mechanics and Computation (SEMC)

作者： Li, Xiangmin Zhang, fuwen Xu, Qingfeng chen, Jian-Fei Harries, Kent Shanghai Res Inst Bldg Sci Shanghai Key Lab Engn Struct Safety Shanghai Peoples R China Queens Univ Belfast Sch Planning Architecture & Civil Engn Belfast Antrim North Ireland Univ Pittsburgh Dept Civil & Environm Engn Pittsburgh PA USA

ISBN: (纸本)9781315641645;9781138029279

The use of externally-bonded Carbon Fibre Reinforced Polymer (CFRP) sheet is a promising and effective method for increasing the shear and flexural strength of existing timber members. This study examines the bond behaviour of CFRP sheet adhesively bonded to a Douglas Fir timber substrate using a single-shear pull-off test. Eleven specimens were tested to analyse the failure mechanism, FRP strain and FRP-timber interfacial bond stress distributions. The influence of parameters including bond length and width are also discussed. The concept of effective bond length was demonstrated to be applicable for CFRP-to-timber bonded systems, which was found to be approximately 60 mm and 40 mm for the 0.167 mm and 0.111 mm thick CFRP sheets used in this study.

关键词： Timber

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Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells

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ADVANCED MATERIALS 2017年第26期29卷 2017 Jul;29(26)页

作者： Lin, Yuze chen, Bo Zhao, fuwen Zheng, Xiaopeng Deng, Yehao Shao, Yuchuan Fang, Yanjun Bai, Yang Wang, Chunru Huang, Jinsong Univ Nebraska Dept Mech & Mat Engn Lincoln NE 68588 USA Univ Nebraska Nebraska Ctr Mat & Nanosci Lincoln NE 68588 USA Univ North Carolina Chapel Hill Dept Appl Phys Sci Chapel Hill NC 27599 USA Chinese Acad Sci Inst Chem Beijing 100190 Peoples R China

Efficient wide-bandgap (WBG) perovskite solar cells are needed to boost the efficiency of silicon solar cells to beyond Schottky-Queisser limit, but they suffer from a larger open circuit voltage (VOC) deficit than narrower bandgap ones. Here, it is shown that one major limitation of VOC in WBG perovskite solar cells comes from the nonmatched energy levels of charge transport layers. Indene-C60 bisadduct (ICBA) with higher-lying lowest-unoccupied-molecular-orbital is needed for WBG perovskite solar cells, while its energy-disorder needs to be minimized before a larger VOC can be observed. A simple method is applied to reduce the energy disorder by isolating isomer ICBA-tran3 from the as-synthesized ICBA-mixture. WBG perovskite solar cells with ICBA-tran3 show enhanced V-OC by 60 mV, reduced V-OC deficit of 0.5 V, and then a record stabilized power conversion efficiency of 18.5%. This work points out the importance of matching the charge transport layers in perovskite solar cells when the perovskites have a different composition and energy levels.

关键词： fullerene isomers perovskites solar cells wide bandgap

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羌塘盆地石炭—二叠系烃源岩地球化学特征讨论

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中国地质 2017年第3期44卷 499-510页

作者：陈文彬付修根谭富文曾胜强冯兴雷中国地质调查局成都地质调查中心四川成都610081 国土资源部沉积盆地与油气资源重点实验室四川成都610081

长期以来,羌塘盆地烃源岩的研究一直限于中生代地层,而对其古生代地层生烃能力一直缺乏系统研究。针对这一问题,本文选择羌塘盆地石炭—二叠系8条剖面的暗色泥岩及碳酸盐岩样品,对其从有机质丰度、有机质类型和热演化程度等方面进行了... 详细信息

长期以来,羌塘盆地烃源岩的研究一直限于中生代地层,而对其古生代地层生烃能力一直缺乏系统研究。针对这一问题,本文选择羌塘盆地石炭—二叠系8条剖面的暗色泥岩及碳酸盐岩样品,对其从有机质丰度、有机质类型和热演化程度等方面进行了有机地球化学特征的分析。研究发现,石炭—二叠系可能烃源岩类型包括泥岩和碳酸盐岩两种,其分布总体上受沉积相的控制,碳酸盐岩烃源岩可能为局限台地相发育的泥晶灰岩,而泥质烃源岩主要为三角洲及斜坡相发育的暗色泥岩及凝灰质泥岩。石炭—二叠纪泥岩有机碳含量较高,具有较好生烃能力,大多达到烃源岩标准,尤其是刻莫石炭系剖面及贡日二叠系剖面,大多为中等—好烃源岩。碳酸盐岩有机碳含量总体比较低,为非烃源岩。石炭—二叠系碳酸盐岩烃源岩有机质类型为Ⅱ1型,泥质烃源岩有机质类型主要为Ⅱ2-Ⅲ型。石炭—二叠系烃源岩热演化程度总体较高,除盆地东部刻莫石炭系剖面处在成熟阶段外,大都处在高成熟—过成熟阶段,非常有利于天然气的生成,具备良好的天然气勘探前景。

关键词：羌塘盆地石炭-二叠系烃源岩有机质丰度有机质类型有机质成熟度

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基于MaxEnt模型的四川小寨子沟国家级自然保护区大熊猫化学通讯位点适宜性评价

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四川动物 2018年第3期37卷 275-279页

作者：黎运喜赵军李刚贺飞彭波刘富文朱云东陈佑平涂正彬四川王朗国家级自然保护区管理局四川平武622550 四川小寨子沟国家级自然保护区管理局四川北川622750 平武县龙门山林场四川平武622550 成都畅新环保科技有限公司成都610031 平武县森林保护协会四川平武622550

为揭示影响野生大熊猫Ailuropoda melanoleuca化学通讯位点选择的生态因素,于2016年3月和10月在四川小寨子沟国家级自然保护区,利用样线法对大熊猫化学通讯位点的适宜性进行了初步研究。调查共发现大熊猫化学通讯位点33个,基于这些位点... 详细信息

为揭示影响野生大熊猫Ailuropoda melanoleuca化学通讯位点选择的生态因素,于2016年3月和10月在四川小寨子沟国家级自然保护区,利用样线法对大熊猫化学通讯位点的适宜性进行了初步研究。调查共发现大熊猫化学通讯位点33个,基于这些位点和海拔、坡度、竹林分布等10个环境变量,使用最大熵(Max Ent)模型对该区域大熊猫化学通讯位点适宜性进行综合评价。结果表明:竹林分布(56.90%)和距山脊距离(29.90%)2个环境变量的累积贡献率达86.80%,是影响该区域大熊猫化学通讯位点的主要生态因子。依据Max Ent模型最大约登指数,将结果分为适宜和不适宜2种类型,其中,适宜面积为15 187.50 hm^2,占研究区域面积的34.22%,主要位于保护区中部、保护区南北部分别与宝顶沟和白河自然保护区交界区域;不适宜面积为29 197.20 hm^2,占65.78%。在人力、物力有限的情况下,本研究为保护区合理安排保护行动的时段和区域、提升大熊猫的保护成效提供了数据支撑,对进一步推动野生大熊猫保护实践具有一定意义。

关键词：大熊猫化学通讯适宜性 Max Ent模型四川小寨子沟国家级自然保护区

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Mapping Polymer Donors toward High-Efficiency Fullerene Free Organic Solar Cells

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ADVANCED MATERIALS 2017年第3期29卷 1-9页

作者： Lin, Yuze Zhao, fuwen Wu, Yang chen, Kai Xia, Yuxin Li, Guangwu Prasad, Shyamal K. K. Zhu, Jingshuai Huo, Lijun Bin, Haijun Zhang, Zhi-Guo Guo, Xia Zhang, Maojie Sun, Yanming Gao, Feng Wei, Zhixiang Ma, Wei Wang, Chunru Hodgkiss, Justin Bo, Zhishan Inganas, Olle Li, Yongfang Zhan, Xiaowei Peking Univ Minist Educ Key Lab Polymer Chem & Phys Dept Mat Sci & EngnColl Engn Beijing 100871 Peoples R China Capital Normal Univ Dept Chem Beijing 100048 Peoples R China Chinese Acad Sci Inst Chem Beijing 100190 Peoples R China Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Peoples R China Victoria Univ Wellington MacDiarmid Inst Adv Mat & Nanotechnol Wellington 6010 New Zealand Victoria Univ Wellington Sch Chem & Phys Sci Wellington 6010 New Zealand Linkoping Univ IFM Biomol & Organ Elect S-58183 Linkoping Sweden Beijing Normal Univ Coll Chem Beijing Key Lab Energy Convers & Storage Mat Beijing 100875 Peoples R China Beihang Univ Sch Chem & Environm Heeger Beijing Res & Dev Ctr Beijing 100191 Peoples R China Soochow Univ Coll Chem Chem Engn & Mat Sci Lab Adv Optoelect Mat Suzhou 215123 Peoples R China Natl Ctr Nanosci & Technol Beijing 100190 Peoples R China

Five polymer donors with distinct chemical structures and different electronic properties are surveyed in a planar and narrow-bandgap fused-ring electron acceptor (IDIC)-based organic solar cells, which exhibit power ... 详细信息

关键词： fused ring electron acceptors nonfullerene acceptors organic solar cells wide-bandgap polymer donors

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广西壮族自治区2014—2016年水痘疫情时空分布特征分析

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中华流行病学杂志 2017年第10期38卷 1390-1393页

作者：许意清付志智周健宇邓革红宫晨蔡富文韩姗珊广西壮族自治区疾病预防控制中心信息管理科南宁530028

目的分析2014—2016年广西壮族自治区（广西）水痘疫情的时空分布特征，为水痘防控工作提供依据。方法水痘疫情数据来源于中国疾病预防控制信息系统传染病疫情报告监测数据，地理信息数据来源于中国CDC。采用ArcGIS10．2软件进行全局和... 详细信息

目的分析2014—2016年广西壮族自治区（广西）水痘疫情的时空分布特征，为水痘防控工作提供依据。方法水痘疫情数据来源于中国疾病预防控制信息系统传染病疫情报告监测数据，地理信息数据来源于中国CDC。采用ArcGIS10．2软件进行全局和局部空间自相关分析水痘发病的空间聚集性，采用SaTScanv9．1．1软件进行时空扫描分析水痘疫情的时空聚集性。结果广西2014--2016年水痘报告发病率分别为32．48／10万、43．56／10万和61．56／10万。在县级水平发病整体上存在正向空间自相关（Moran’S，在0．24～0．35之间，P〈0．01），高发病、高一高聚集区较为一致，均分布于广西西北部地区。时空扫描结果显示，发病主要聚集时间为每年的10月至次年1月，每年的一类聚集区主要分布于河池市全部和百色市大部分地区，基本覆盖了广西西北部地区，2016年在广西东北部地区以灌阳县为中心和南部地区以海城县为中心，分别出现1个波及范围较广的二类聚集区。结论广西水痘疫情呈现上升趋势，发病在整体上呈现较明显的时空聚集性，西北部地区聚集性高，需重点防治。此外，在水痘高发季节需加强对其周边地区的防控力度。

关键词：水痘空间自相关性时空扫描时空聚集

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选矿废水处理及回用技术进展

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有色金属科学与工程 2017年第1期8卷 134-138页

作者：刘馥雯郭琳刘晨陈云嫩熊昌狮江西理工大学建筑与测绘工程学院江西赣州341000 江西理工大学资源与环境工程学院江西赣州341000

选矿废水水量大、成分复杂,未经处理直接排放,不仅会严重污染水体,而且破坏环境,而经适当处理后,可以回用在浮选过程中.文章在简要综述选矿废水的来源、特点以及危害的基础上,重点介绍含水玻璃、难降解有机物及重金属离子等的选矿废水... 详细信息

选矿废水水量大、成分复杂,未经处理直接排放,不仅会严重污染水体,而且破坏环境,而经适当处理后,可以回用在浮选过程中.文章在简要综述选矿废水的来源、特点以及危害的基础上,重点介绍含水玻璃、难降解有机物及重金属离子等的选矿废水最常用的处理方法及回用技术.总结目前国内选矿废水处理所取得的成绩和其中的不足,展望今后处理技术的研究发展方向,提出选矿废水的回用,不仅可以清洁矿山,保护环境,还具有显著的经济效益和社会效益.

关键词：选矿废水回用废水处理浮选

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羌塘盆地二叠系白云岩油苗地球化学特征及意义

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沉积学报 2017年第3期35卷 611-620页

作者：陈文彬付修根谭富文曾胜强冯兴雷宋春彦王东中国地质调查局成都地质调查中心成都610081 国土资源部沉积盆地与油气资源重点实验室成都610081

通过采集羌塘盆地中央隆起带二叠系展金组白云岩油苗及烃源岩样品,对其族组成、饱和烃、芳烃色谱—质谱以及单体碳同位素进行了研究,并进行了油源对比。研究结果表明:白云岩油苗中饱和烃含量最高,其次为非烃,芳烃和沥青质含量较低,饱芳... 详细信息

通过采集羌塘盆地中央隆起带二叠系展金组白云岩油苗及烃源岩样品,对其族组成、饱和烃、芳烃色谱—质谱以及单体碳同位素进行了研究,并进行了油源对比。研究结果表明:白云岩油苗中饱和烃含量最高,其次为非烃,芳烃和沥青质含量较低,饱芳比大于1;白云岩油苗的正构烷烃主要为前高单峰型分布特征,碳数分布范围n C_(15)~nC_(36),主峰碳为nC_(17)~nC_(20),nC_(21)-/nC_(22)+值为1.0~4.56,C_(27)-C_(28)-C_(29)规则甾烷表现为不规则的"V"型的分布并且C29甾烷占优势,升藿烷从C_(31)~C_(35)均有检出,显示出白云岩油苗的生烃母质主要来源于藻类和细菌等低等水生生物;白云岩油苗的Pr/Ph值为0.91~1.30,伽马蜡烷指数值为0.42~0.88,三芴系列化合物中以硫芴含量最高(平均67.39%)而氧芴含量(平均7.89%)较低,4-MDBT/DBT比值为0.97~4.26,(2+3)-MDBT/DBT值为0.37~1.62,表明白云岩油苗生烃母质为形成于具有一定盐度还原环境为的海相页岩;白云岩油苗的OEP值接近平衡值1,甾萜烷异构参数C_(29)ααα20S/ααα(20S+20R)、C_(29)αββ/(ααα+αββ)和C_(31)22S/(22S+22R)等接近或达到平衡值,芳烃标志物成熟度参数MPI_1、F_1和4,6/1,4-DMDBT计算出的等效镜质体反射率表明白云岩油苗为成熟原油。白云岩油苗的生物标志物和展金组泥岩具有较好对比性,反映了白云岩油苗主要来源于展金组烃源岩;其单体碳同位素与二叠系展金组烃源岩分布形式和变化趋势基本相似,但也有一定的差异,反映了其具有混合来源的特点。

关键词：生物标志化合物单体碳同位素油源对比二叠系白云岩油苗羌塘盆地

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Loading of free radicals on the functional graphene combined with liquid chromatography-tandem mass spectrometry screening method for the detection of radical-scavenging natural antioxidants

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ANALYTICA CHIMICA ACTA 2013年 802卷 103-112页

作者： Wang, Guoying Shi, Gaofeng chen, Xuefu chen, fuwen Yao, Ruixing Wang, Zhenju Lanzhou Univ Technol Sch Petrochem Engn Lanzhou 730050 Peoples R China Lanzhou Univ Technol Instrumental Anal & Res Ctr Lanzhou 730050 Peoples R China

A novel free radical reaction combined with liquid chromatography electrospray ionization tandem mass spectrometry (FRR-LC-PDA-ESI/APCI-MS/MS) screening method was developed for the detection and identification of radical-scavenging natural antioxidants. Functionalized graphene was prepared by chemical method for loading free radicals (superoxide radical, peroxyl radical and PAHs free radical). Separation was performed with and without a preliminary exposure of the sample to specific free radicals on the functionalized graphene, which can facilitate reaction kinetics (charge transfers) between free radicals and potential antioxidants. The difference in chromatographic peak areas is used to identify potential antioxidants. The structure of the antioxidants in one sample (Swertia chirayita) is identified using MS/MS and comparison with standards. Thirteen compounds were found to possess potential antioxidant activity, and their free radical-scavenging capacities were investigated. The thirteen compounds were identified as 1,3,5-trihydroxyxanthone 8-O-beta-D glucopyranoside (PD1), norswertianin (PD2), 1,3,5,8-tetrahydroxyxanthone (PD3), 3, 3, 4, 5, 8-penta hydroxyflavone-6-beta-D glucopyranosiduronic acid-&pentopyranose-7-O-glucopyranoside (PD4), 1,5,8-trihydroxy-3-methoxyxanthone (PD5), swertiamarin (PSI), 2-C-beta-D-glucopyranosyl 1,3,7 trihydroxylxanthone (PS2), 1,3,7 trihydroxylxanthone sop]) glucopyranoside (PL1), 1,3,8-trihydroxyl xanthone 5-O-beta-D glucopyranoside (PL2), 1,3,7-trihydroxy-8methoxyxanthone (PL3), 1,2,3-trihydroxy-7,8-dimethoxyxanthone (PL4), 1,8-dihydroxy-2,6-dimethoxy xanthone (PL5) and 1,3,5,8-tetramethoxydecussatin (PL6). The reactivity and SC50 values of those compounds were investigated, respectively. PD4 showed the strongest capability for scavenging PAHs free radical;PL4 showed prominent scavenging capacities in the lipid peroxidation processes;it was found that all components in S. chirayita exhibited weak reactivity in the superoxide rad

关键词： Antioxidants Loading of free radicals Radical-scavenging Functionalized graphene LC-MS Free radical reaction kinetics

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