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| 1 | Climate and litter C/N ratio constrain soil organic carbon accumulation显示文摘Soil organic carbon(SOC) plays critical roles in stabilizing atmospheric CO2 concentration, but the mechanistic controls on the amount and distribution of SOC on global scales are not well understood. In turn, this has hampered the ability to model global C budgets and to find measures to mitigate climate change. Here, based on the data from a large field survey campaign with 2600 plots across China’s forest ecosystems and a global collection of published data from forested land, we find that a low litter carbon-to-nitrogen ratio(C/N) and high wetness index(P/PET, precipitation-to-potentialevapotranspiration ratio) are the two factors that promote SOC accumulation, with only minor contributions of litter quantity and soil texture. The field survey data demonstrated that high plant diversity decreased litter C/N and thus indirectly promoted SOC accumulation by increasing the litter quality. We conclude that any changes in plant-community composition, plant-species richness and environmental factors that can reduce the litter C/N ratio, or climatic changes that increase wetness index, may promote SOC accumulation. The study provides a guideline for modeling the carbon cycle of various ecosystem scales and formulates the principle for land-based actions for mitigating the rising atmospheric CO2 concentration. | Guoyi Zhou Shan Xu Philippe Ciais Stefano Manzoni Jingyun Fang Guirui Yu Xuli Tang Ping Zhou Wantong Wang Junhua Yan Gengxu Wang Keping Ma Shenggong Li Sheng Du Shijie Han Youxin Ma Deqiang Zhang Juxiu Liu Shizhong Liu Guowei Chu Qianmei Zhang Yuelin Li Wenjuan Huang Hai Ren Xiankai Lu Xiuzhi Chen | 2019 | National Science Review2019，6，4： | 21 |
| 2 | Altitudinal changes of surface pollen and vegetation on the north slope of the Middle Tianshan Mountains,China显示文摘To provide information on vegetation patterns and altitudinal distributions of pollen assemblage in surface soil layers,their complicated relationships in a dryland mountain-basin system in northwestern China and a realistic basis for paleovegetational reconstruction,we investigated 86 vegetation quadrats and analyzed 80 soil samples from the surface soil layers along an altitudinal transect on the north slope of the Middle Tianshan Mountains from alpine cushion vegetation at 3,510 m near glacier to desert vegetation at 460 m in the Gurbantunggut Desert.According to surface pollen assemblages and the results of the detrended correspondence analysis,the transect can be divided into six major altitudinal pollen zones as alpine cushion vegetation,alpine and subalpine meadows,montane Picea forest,forest-steppe ecotone,Artemisia desert and typical desert,which basically reflect the characteristics of the mountainous vegetation patterns on the north slope of the Middle Tianshan Mountains.However,Picea pollen also exists outside the spruce forest,Chenopodiaceae and Artemisia pollen appeared above the elevation of 1,300 m,indicating that most of them might be introduced from lower elevations by upslope winds.Airborne pollen researches from three regions at different elevations further suggest that a high-frequency northwest anabatic wind has a remarkable influence on the transportation and dispersion of surface pollen in the area. | YANG Zhenjing ZHANG Yun REN Haibao YAN Shun KONG Zhaochen MA Keping NI Jian | 2016 | Journal of Arid Land2016，8，5： | 17 |
| 3 | Formal verification of safety protocol in train control system显示文摘In order to satisfy the safety-critical requirements,the train control system(TCS) often employs a layered safety communication protocol to provide reliable services.However,both description and verification of the safety protocols may be formidable due to the system complexity.In this paper,interface automata(IA) are used to describe the safety service interface behaviors of safety communication protocol.A formal verification method is proposed to describe the safety communication protocols using IA and translate IA model into PROMELA model so that the protocols can be verified by the model checker SPIN.A case study of using this method to describe and verify a safety communication protocol is included.The verification results illustrate that the proposed method is effective to describe the safety protocols and verify deadlocks,livelocks and several mandatory consistency properties.A prototype of safety protocols is also developed based on the presented formally verifying method. | ZHANG Yan TANG Tao LI KePing MERA Jose Manuel ZHU Li ZHAO Lin XU TianHua | 2011 | Science China(Technological Sciences)2011，54，11： | 6 |
| 4 | A semi-wet technological process for flue gas desulfurization by coro- na discharges at an industrial scale 显示文摘 | Yan Keping Li Ruinian Zhu Tianle | 2006 | Chemical Engi- neering Journal2006，，2： | 1 |
| 5 | A semi-wet technological process for flue gas desulfurization by corona discharges at an indust rial scale显示文摘 | Yan Keping Li Ruinian Zhu Tianle | | 0，，： | 1 |
| 6 | Control of flow stabilized positive corona discharge modes and NO remova characteristics in dry air by CO2 injections显示文摘 | Keping Yan Takashi Yamamoto | 1999 | Journal of Electrostaics1999，46，： | 1 |
| 7 | A high voltage pulse generator for corona plasma generation显示文摘 | Yan Keping van Heesch E J M Pemen A J M et aI | 2002 | IEEE Trans on Industry Applications2002，38，3： | 1 |
| 8 | A high-voltage pulse generator for corona plas- ma generation 显示文摘 | YAN Keping | 2002 | IEEE Transactions Industry Application2002，38，3： | 1 |
| 9 | A novel circuit topology for pulsed power generation显示文摘 | Yan Keping Smulders H W M Wouters P A A F | 2003 | Journal of Electrosta-tics2003，58，34： | 1 |
| 10 | A 10 kW high-voltage pulse generator for corona plasma generation显示文摘 | Yan Keping van Heesch E Pemen A | 2001 | Review of Scientific Instruments2001，72，5： | 1 |
| 11 | Heterogene- ous reactions in non-thermal plasma flue gas desulfurization 显示文摘 | LI Ruinian YAN Keping MAO Jingsong | 1998 | Chemical Engineering Science1998，53，8： | 1 |
| 12 | Corona induced non-thermal plasmas: Fundamental Study and Industrial Applications 显示文摘 | Hexing Hui | 1998 | Journal of Electrostatics1998，44，1： | 1 |
| 13 | A semiwet technological process for flue gas desulfurization by corona discharges at an industrial scale显示文摘 | Yan Keping Li Ruinian Zhu Tianle | 2006 | Chem Eng J2006，116，2： | 1 |
| 14 | NO removal characteristics of a corona radical shower system under DC and AC/DC superimposed operations 显示文摘 | Keping Yan Takashi Yamamoto Seiji Kanazawa | 1998 | IEEE Transactions on Industry Applications1998，3，： | 1 |
| 15 | Non-thermal plasma generation by using back corona discharge on catalyst显示文摘 | Fada Feng Lingling Ye Ji Liu Keping Yan | 2012 | Journal of Electrostatics2012，，： | 1 |
| 16 | A semi-wet technological process for flue gas desulfurization by corona discharges at an industrial scale 显示文摘 | Yan Keping Li Ruinian Zhu Tianle | 2006 | Chemical Engineering Journai2006，116，： | 1 |
| 17 | Corona induced non-thermal plasmas:fundamental study and industrial applications显示文摘 | Keping Yan Hexing Hui | 1998 | Journal of Eletrostatics1998，44，： | 1 |
| 18 | An industrial streamer corona plasma system for gas cleaning显示文摘 | Winands G J J Yan Keping Pemen A J M | 2006 | IEEE Trans on Plasma Science2006，34，5： | 1 |
| 19 | A high-voltage pulse generator for corona plasmageneration显示文摘 | YAN Keping | 2002 | IEEE Transactions on Industry Application2002，38，3： | 1 |
| 20 | A high-voltage pulse generator for corona plasma generation显示文摘 | Yan Keping | | 0，，03： | 1 |
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