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Modification and validation of a new method to improve the accuracy of MODIS-derived dew point temperature over China's Mainland

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International Journal of Digital Earth 2023年第1期16卷 3513-3535页

作者： wenbin zhu and Mei Cao Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingPeople’s Republic of China State Key Laboratory of Plateau Ecology and Agriculture Qinghai UniversityXiningPeople’s Republic of China School of Information Engineering China University of GeosciencesBeijingPeople’s Republic of China

MODIS atmospheric profile products(MOD07_L2 and MYD07_L2)have been widely used for near-surface dew point temperature(T_(d))***,their accuracy over large scale has seldom been *** this study,we validated these two products comprehensively against 2153 stations over China's ***07_L2 was suggested by our study because it achieved higher accuracy in either of two frequently-used *** be specific,the root-meansquare error(RMSE)achieved by MOD07_L2 and MYD07_L2 was 5.82 and 7.42℃,*** this basis,a recent ground-based correction method was modified to further improve their *** focus is to investigate whether this ground-based approach is applicable to large-scale remote sensing *** results show that this new method showed great potential for T_(d) estimation independently from ground *** the introduction of MODIS land surface products,the RMSE it achieved for MOD07_L2 and MYD07_L2 was 5.23 and 5.59℃,*** analysis shows that it was particularly useful in capturing the annual average T_(d) *** R2,RMSE,and bias of annual average daily mean T_(d) estimates were 0.95,1.84℃,and 0.53℃,and those achieved for annual average instantaneous T_(d) estimates were 0.94,2.09℃,and 0.75℃,respectively.

关键词： Dew point temperature relative humidity atmospheric profiles MODIS remote sensing

Spatial distribution of vegetation and the influencing factors in Qaidam Basin based on NDVI

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Journal of Arid Land 2011年第2期3卷 85-93页

作者： wenbin zhu AiFeng LV ShaoFeng JIA Institute of Geographical Sciences and Natural Resources Research CAS Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100039 China

The spatial distribution of vegetation in Qaidam Basin was analyzed using GIMMS（Global Inventory Modeling and Mapping Studies） /NDVI（Normalized Difference Vegetation Index） data set from January 1982 to December *** on the data of precipitation,terrain,stream systems,land use and the map of vegetation distribution in Qaidam Basin,we studied the factors influencing the spatial distribution of *** results showed that the vegetation was generally low in Qaidam Basin and there was a clear semi-ring structure from southeast to *** some areas,the existence of rivers,lakes and spring belts turned this semi-ring structure into a non-continuous state and formed distinct bright spots and continuous linear *** were four main factors that affected the spatial distribution of vegetation coverage in Qaidam Basin,i.e.,precipitation,hydrological conditions,altitude and human *** and altitude have a correlation and determine the basic pattern of vegetation distribution in Qaidam *** impacts of hydrological conditions and human activities were mainly embodied in partial areas,and often broke the pattern of vegetation distribution dominated by precipitation and altitude.

关键词： NDVI vegetation coverage spatial differentiation hydrological conditions Qaidam Basin

Apatite fission track thermochronology in the Kuluketage and Aksu areas,NW China:Implication for tectonic evolution of the northern Tarim

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Geoscience Frontiers 2016年第2期7卷 171-180页

作者： Zhiyong Zhang wenbin zhu Dewen Zheng Bihai Zheng Wei Yang State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences State Key Laboratory for Mineral Deposits Research Department of Earth SciencesNanjing University State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration

Tarim Precambrian bedrocks are well exposed in the Kuluketage and Aksu areas, where twenty four samples were taken to reveal the denudation history of the northern Tarim Craton. Apatite fission track dating and thermal history modeling suggest that the northern Tarim experienced multi-stage cooling events which were assumed to be associated with the distant effects of the Cimmerian orogeny and India-Eurasia collision in the past. But the first episode of exhumation in the northern Tarim, occurring in the mid-Permian to Triassic, is here suggested to be induced by docking of the Tarim Craton and final amalgamation of the Central Asian Orogenic Belt. The cooling event at ca. 170 Ma may be triggered by the Qiangtang-Eurasia collision. Widespread Cretaceous exhumation could be linked with docking of the Lhasa terrane in the late Jurassic. Cenozoic reheating and recooling likely occurred because of the northpropagating stress, however, this has not affected the northern Tarim much because the Tarim is characterized by rigid block-like motion.

关键词： Tarim Craton The Kuluketage area Aksu Precambrian blueschist Apatite fission track Thermo-tectonic evolution

Mesozoic-Cenozoic Basin Features and Evolution of Southeast China

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Acta Geologica Sinica(English Edition) 2007年第4期81卷 573-586页

作者： SHU Liangshu ZHOU Xinmin DENG Ping zhu wenbin State Key Laboratory for Mineral Deposits Research Department of Earth Sciences Nanfing University Nanjing 210093 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

The Late Triassic to Paleogene （T3-E） basin occupies an area of 143100 km^2, being the sixth area of the whole of SE China; the total area of synchronous granitoid is about 127300 km^2; it provides a key for understanding the tectonic evolution of South China. From a new 1：1500000 geological map of the Mesozoic-Cenozoic basins of SE China, combined with analysis of geometrical and petrological features, some new insights of basin tectonics are obtained. Advances include petrotectonic assemblages, basin classification of geodynamics, geometric features, relations of basin and range. According to basin-forming geodynamical mechanisms, the Mesozoic-Cenozoic basin of SE China can be divided into three types, namely： 1） para-foreland basin formed from Late Triassic to Early Jurassic （T3-J1） under compressional conditions; 2） rift basins formed during the Middle Jurassic （J2） under a strongly extensional setting; and 3） a faulted depression formed during Early Cretaceous to Paleogene （K1-E） under back-arc extension action. From the rock assemblages of the basin, the faulted depression can be subdivided into a volcanic-sedimentary type formed mainly during the Early Cretaceous （K1） and a red -bed type formed from Late Cretaceous to Paleogene （K2-E）. Statistical data suggest that the area of all para-foreland basins （T3-J1） is 15120 km^2, one of rift basins （J2） occupies 4640 km^2, and all faulted depressions equal to 124330 km^2 including the K2-E red-bed basins of 37850 km^2. The Early Mesozoic （T3-J1） basin and granite were mostly co-generated under a post-collision compression background, while the basins from Middle Jurassic to Paleogene （J2-E） were mainly constrained by regional extensional tectonics. Three geological and geographical zones were surveyed, namely： 1） the Wuyishan separating zone of paleogeography and climate from Middle Jurassic to Tertiary; 2） the Middle Jurassic rift zone; and 3） the Ganjiang separating zone of Late Mesozoic volcanism. Three types of

关键词： basin-granite tectonics geodynamical evolution Mesozoic-Cenozoic paleogeographic-paleoclimatic settings SE China

Effect of P fertilizer reduction regime on soil Olsen-P, root Fe-plaque P, and rice P uptake in rice-wheat rotation paddy fields

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Pedosphere 2021年第1期31卷 94-102页

作者： Hao CHEN Yu WANG Jiahui YUAN wenbin zhu Guanglei CHEN Shenqiang WANG State Key Laboratory of Soil and Sustainable Agriculture Changshu National Agro-Ecosystem Observation and Research StationInstitute of Soil ScienceChinese Academy of SciencesNanjing 210008China College of Resource and Environment University of Chinese Academy of Sciences.Beijing 100049China College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China

In agricultural systems, it is vital to use limited yet optimal phosphorus(P) resources, because excessive P fertilizer application leads to the accumulation of P in soil, increasing the risk of environmental pollution and causing the waste and exhaustion of P resources. In a rice-wheat rotation system, omitting P fertilizer application in the rice-growing season is a good alternative;however, how this P fertilization reduction influences changes in P in the soil-root-aboveground system is unclear. In this study, after a seven-year rice-wheat rotation at the Yixing(YX) and Changshu(CS) sampling sites, China, compared with P fertilization in rice-and wheat-growing seasons(PR+W), reduced P fertilization(no P fertilizer application in either season, P0;P fertilization only in wheat-growing seasons, PW;and P fertilization only in rice-growing seasons, PR) did not result in substantial variation in crop biomass. The PW treatment did not reduce crop total P, root iron(Fe)-plaque P, and soil Olsen-P at three stages of rice growth(seedling, booting, and harvesting stages) at the YX and CS sites. In contrast, concentrations of soil Olsen-P, aboveground crop total P, and root Fe-plaque P decreased in the P0 treatment by 45.8%–81.0%,24.6%–30.9%, and 45.6%–73.4%, respectively. In addition, a significant negative correlation was observed between the root Fe-plaque P and crop biomass at the two sites. Significant positive correlations were also observed between root Fe-plaque P and root total P, crop total P, and soil Olsen-P. In addition, the results of a redundancy analysis revealed that soil alkaline phosphatase(ALP) played a major role in the supply of P in soil, and was closely associated with root Fe-plaque P. The results of this study will enhance the understanding of the changes in P in the soil-root-aboveground system, particularly under P fertilizer reduction regimes.

关键词： crop biomass crop total P iron plaque reduced P input rice-growth stage soil-root-aboveground system

Cataclastic rheology of carbonate rocks

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Science China Earth Sciences 2005年第8期48卷 1227-1233页

作者： LU Xiancai SUN Yan SHU Liangshu GU Lianxing GUO Jichun zhu wenbin State Key Laboratory of Mineral Deposits Research Department of Earth SciencesNanjing UniversityNanjing 210093China

Based on the knowledge of the shallow-level mylonitization of detrital rocks and intrusive rocks,the poorly-known cataclastic rheology of carbonate rocks is discussed compre-hensively in this *** cases taken from eastern China are analyzed in various aspects including ductile-brittle fault zone,rock texture and structure,clastomylonite layer,leucocratic stress minerals,and frictional *** is proposed that the cataclastic flow structure represented by clastomylonite texture is a cooling pattern of flow assemblage charac-terized by cooling metamorphism,cooling mylonite and cooling stress *** a pattern is formed generally in mildly reducing physicochemical environments,and is commonly related to regional tectonism and mesothermal and epithermal mineralization.

关键词： carbonate rock cataclastic rheology clastomylonite ductile-brittle fault zone.

Implementing geostatistical analysis to study spatio-temporal distribution patterns of swimming crabs(Portunus trituberculatus)

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Acta Oceanologica Sinica 2021年第6期40卷 67-74页

作者： wenbin zhu Kaner Lu Zhanhui Lu Qian Dai Zhenghua Li Yongdong Zhou Siqi Huang Haichen zhu Guocheng Cui Zhejiang Marine Fisheries Research Institute Zhoushan 316021China Scientific Observing and Experimental Station of Fishery Resources Key Fishing Grounds of Ministry of AgricultureZhoushan 316021China Key Laboratory of Sustainable Utilization of Marine Fishery Resources of Zhejiang Province Zhoushan 316021China Zhejiang Ocean University Zhoushan 316021China Geological Environment Monitoring Center of Zhejiang Province Hangzhou 310007China

This study attempted to compare the performance of local polynomial interpolation,inverse distance weighted interpolation,and ordinary kriging in studying distribution patterns of swimming ***-validation was used to select the optimum method to get distribution results,and kriging was used for making spatial variability *** were collected from 87 sampling stations in November of 2015(autumn)and February(winter),May(spring)and August(summer)of *** indicate that swimming crabs widely distributed in autumn and summer:in the summer,they were more spatially independent,and resources in each sampling station varied a lot;in the winter and spring,the abundance of crabs was much lower,but the individual crab size was bigger,and they showed the patchy and more concentrative distribution pattern,which means they were more spatially *** patterns were in accordance with ecological migration features of swimming crabs,which were affected by the changing marine *** study could infer that it is applicable to study crab fishery or even other crustacean species using geostatistical *** not only helps practitioners have a better understanding of how swimming crabs migrate from season to season,but also assists researchers in carrying out a more comprehensive assessment of the ***,it may facilitate advancing the implementation in the pilot quota management program of swimming crabs in northern Zhejiang fishing grounds.

关键词： swimming crabs(Portunus trituberculatus) geostatistical analysis ordinary kriging spatio-temporal distributions Zhejiang coastal waters of China

Enhanced solution representations for vehicle routing problems with split deliveries

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Frontiers of Engineering Management 2023年第3期10卷 483-498页

作者： wenbin zhu zhuoran AO Roberto BALDACCI Hu QIN Zizhen ZHANG School of Business Administration South China University of TechnologyGuangzhou 510640China Thrust of Intelligent Transportation The Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511466China College of Science and Engineering(CSE) Hamad Bin Khalifa University(HBKU)Doha 5825Qatar School of Management Huazhong University of Science and TechnologyWuhan 430074China School of Data and Computer Science Sun Yat-sen UniversityGuangzhou 510275China

In this study,we investigate a forest-based solution representation for split delivery vehicle routing problems(SDVRPs),which have several practical applications and are among the most difficult vehicle routing *** new solution representation fully reflects the nature of split delivery,and can help reduce the search space when used in heuristic *** on the forest structure,we devise three neighborhood search *** highlight the effectiveness of this solution representation,we integrate these operators into a standard tabu search *** conduct extensive experiments on three main SDVRPs addressed in the literature:The basic SDVRP,the multidepot SDVRP,and the SDVRP with time *** experimental results show that the new forest-based solution representation is particularly effective in designing and implementing neighborhood operators,and that our new approach outperforms state-of-the-art algorithms on standard datasets.

关键词： vehicle routing multidepot time windows tabu search split delivery

Neoproterozoic-Paleozoic Tectonic Evolution of the Northeastern Tarim Block： Constraints from ^40Ar/^39Ar Geochronology in the Kuluketage Area, NW China

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1231-1247页

作者： ZHANG Zhiyong zhu wenbin ZHENG Dewen ZHENG Bihai XIAO Wenjiao LI Daming HAN Chunming State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beij'ing 100029 China School of Earth Sciences The University of Melbourne Victoria 3010 Australia State Key Laboratory for Mineral Deposits Research Department of Earth Sciences Nanjing University Nanjing 210093 China State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beo'ing 100029 China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101 China

Seventeen new ^40Ar/^39Ar analyses reported for ten Tarim Precambrian basement samples from the Kuluketage area, are applied to reconstruct the regional thermo-tectonic history together with previously published data. Eight samples were taken adjacent to the Xingdi and Xinger faults, major structures in the study area, whereas a further two were sampled at some distance from the faults. 4^40Ar/^39Ar data from the latter record rapid cooling following a Neoproterozoic magmatic/metamorphic event and mild Paleozoic thermal disturbance. Paleozoic ^40Ar/^39Ar ages from the study area, as well as from the Central Tianshan and eastern Southern Tianshan suggest two strong deformational periods at ~390 Ma and ~300 Ma. During the older period, argon isotopic systems were reset/disturbed by high temperature related to arc magmatism resulting from subduction of the South Tianshan paleo-oceanic crust, possibly in combination with reactivation of Precambrian faults. The younger period is characterized by widespread late Carboniferous-early Permian intracontinental deformation, which is related to the final amalgamation of the Central Asian Orogenic Belt. Previously published apatite fission track data attest to a long history of post-collisional cooling, which is attributed to continued propagation of deformation within the Central Asian Orogenic Belt.

关键词： ^40Ar/^39 geochronology Northeastern Tarim Block South Tianshan Ocean Neoproterozoic-Paleozoic thermo-tectonic evolution