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Retrieval of high spatial resolution mountainous land surface temperature considering topographic and adjacency effects

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Science China Earth sciences 2024年

作者： Zhiwei HE Bohui TANG Zhaoliang LI Faculty of Land Resources engineering Kunming University of Science and Technology Key Laboratory of Plateau Remote Sensing Department of Education of Yunnan Province State Key Lab of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture and Rural Affairs Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences

Land surface temperature(LST) is a key parameter reflecting the interaction between land and atmosphere. Currently,thermal infrared(TIR) quantitative remote sensing technology is the only means to obtain large-scale, high spatial resolution LST. Accurately retrieving high spatial resolution mountainous LST(MLST) plays an important role in the study of mountain climate change. The complex terrain and strong spatial heterogeneity in mountainous areas change the geometric relationship between the surface and satellite sensors, affecting the radiation received by the sensors, and rendering the assumption of planar parallelism invalid. In this study, considering the influence of complex terrain in mountainous areas on atmospheric downward radiation and the thermal radiation contribution of adjacent pixels, a mountainous TIR radiative transfer model based on the sky view factor was developed. Combining with the atmospheric radiative transfer model MODTRAN 5.2, a nonlinear generalized split-window algorithm suitable for high spatial resolution MLST retrieval was constructed and applied to Landsat-9 TIRS-2satellite TIR remote sensing data. The analysis results indicate that neglecting the topographic and adjacency effects would lead to significant discrepancies in LST retrieval, with simulated data showing LST differences of up to 2.5 K. Furthermore, due to the lack of measured MLST in the field, the MLST accuracy obtained by this retrieval method was indirectly validated using the currently recognized highest-accuracy forward 3D radiative transfer model DART. The MLST and emissivity were input into the DART model to simulate the brightness temperature at the top of the atmosphere(TOA) of Landsat-9 band 10, and compared with the brightness temperature at TOA of Landsat-9 band 10. The RMSE(Root Mean Square Error) for the two subregions was0.50 and 0.61 K, respectively, indicating that the method proposed can retrieve high-precision MLST.

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geographical origin identification of winter jujube(Ziziphus jujuba Dongzao')by using multi-element fingerprinting with chemometrics

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Journal of Integrative Agriculture 2024年第5期23卷 1749-1762页

作者： Xiabing Kong Qiusheng Chen Min Xu Yihui Liu Xiaoming Li Lingxi Han Qiang Zhang Haoliang Wan Lu Liu Xubo Zhao Jiyun Nie College of Horticulture Qingdao Agricultural University/Laboratory of Quality&Safety Risk Assessment for Fruit(Qingdao)Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products(Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety EngineeringQingdao 266109China Institute of Agricultural Product Quality Safety and NutritionTianjin Academy of Agricultural SciencesTianjin 300381China College of Food Science and engineering Northwest A&F UniversityYangling 712100China

Winter jujube(Ziziphus jujuba'Dongzao')is greatly appreciated by consumers for its excellent quality,but brand infringement frequently occurs in the ***,we first determined a total of 38 elements in 167 winter jujube samples from the main winter jujube producing areas of China by inductively coupled plasma mass spectrometer(ICP-MS).As a result,16 elements(Mg,K,Mn,Cu,Zn,Mo,Ba,Be,As,Se,Cd,Sb,Ce,Er,Tl,and Pb)exhibited significant differences in samples from different producing *** linear discriminant analysis(LDA)and orthogonal projection to latent structures discriminant analysis(OPLS-DA)showed better performance in identifying the origin of samples than unsupervised principal component analysis(PCA).LDA and OPLS-DA had a mean identification accuracy of 87.84 and 94.64%in the testing set,*** using the multilayer perceptron(MLP)and C5.0,the prediction accuracy of the models could reach 96.36 and 91.06%,*** on the above four chemometric methods,Cd,Tl,Mo and Se were selected as the main variables and principal markers for the origin identification of winter ***,this study demonstrates that it is practical and precise to identify the origin of winter jujube through multi-element fingerprint analysis with chemometrics,and may also provide reference for establishing the origin traceability system of other fruits.

关键词： winter jujube multi-element fingerprint analysis chemometrics origin traceability

Effect of Supplementary Irrigation on the Yield of Sorghum (Sorghum bicolor L. Moench) in the Context of Climate Change in the Dry Savannahs of Togo

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American Journal of Climate Change 2024年第2期13卷 163-174页

作者： Adjiwanou Atiglo-Gbenou Yaovi Ouézou Azouma Jean Mianikpo Sogbedji Agricultural Mechanization and Process engineering Research Team (ERMAP) Department of Rural Engineering and Agricultural Machinery School of Agronomy University of Lom Lom Togo Soil Climate ad Crop Sciences Interface Laboratory (LISSCPV) Department of Soil Science School of Agronomy University of Lom Lom Togo

Under the current context of climate change, supplementary irrigation may be needed for crop production resilience. We determined the effects of supplementary irrigation on sorghum grain yield in the dry Savannah region of Togo. A two-year trial was conducted in a controlled environment at AREJ, an agro-ecological center in Cinkassé. The plant material was sorghum variety Sorvato 28. The experimental design was a Completely Randomized Block with three replications and three treatments as follows: T0 control plot (rainfed conditions);T1 (supplementary irrigation from flowering to grain filling stage) and T2 (supplementary irrigation from planting to grain filling stage). Two irrigation techniques (furrow and Californian system) were used under each watering treatment. The results showed that irrigation technique significantly affected panicle length with no effect on 1000 grains mass. Panicle length and grain yields varied from 15.59 to 25.71 cm and 0.0 to 2.06 t∙h−1, respectively, with the highest values (25.66 cm and 2.06 t∙h−1, respectively) under the T2 treatment with the California system-based supplementary irrigation. The comparison of results obtained on treatment T0 and T2, shows that supplementary irrigation increased the yields by at least 68.62%. Supplementary irrigation during sowing and growing season (T2) improved sorghum yields in the dry savannahs of Togo, with a better performance of the California irrigation system.

关键词： Climate Change Supplementary Irrigation Sorghum Grain Yield Dry Savannah Togo

地理大数据揭示中国主要城市建成环境物质存量的空间格局

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engineering 2024年第3期34卷 143-153页

作者： Zhou Huang Yi Bao Ruichang Mao Han Wang Ganmin Yin Lin Wan Houji Qi Qiaoxuan Li Hongzhao Tang Qiance Liu Linna Li Bailang Yu Qinghua Guo Yu Liu Huadong Guo Gang Liu Institute of Remote Sensing and geographical Information Systems School of Earth and Space SciencesPeking UniversityBeijing 100871China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China SDU Life Cycle engineering Department of Green TechnologyUniversity of Southern DenmarkOdense 5230Denmark department of Construction Management School of Civil EngineeringTsinghua UniversityBeijing 100084China School of Computer Science China University of GeosciencesWuhan 430074China School of geographical sciences East China Normal UniversityShanghai 200062China Land Satellite Remote Sensing Application Center Ministry of Natural ResourcesBeijing 100048China Institute of Geographic sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China department of Geography California State UniversityLong BeachCA 90840USA Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China College of Urban and Environmental sciences Peking UniversityBeijing 100871China

The patterns of material accumulation in buildings and infrastructure accompanied by rapid urbanization offer an important,yet hitherto largely missing stock perspective for facilitating urban system engineering and informing urban resources,waste,and climate ***,our existing knowledge on the patterns of built environment stocks across and particularly within cities is limited,largely owing to the lack of sufficient high spatial resolution *** study leveraged multi-source big geodata,machine learning,and bottom-up stock accounting to characterize the built environment stocks of 50 cities in China at 500 m fine-grained *** per capita built environment stock of many cities(261 tonnes per capita on average)is close to that in western cities,despite considerable disparities across cities owing to their varying socioeconomic,geomorphology,and urban form *** is mainly owing to the construction boom and the building and infrastructure-driven economy of China in the past ***’s urban expansion tends to be more“vertical”(with high-rise buildings)than“horizontal”(with expanded road networks).It trades skylines for space,and reflects a concentration-dispersion-concentration pathway for spatialized built environment stocks development within cities in *** results shed light on future urbanization in developing cities,inform spatial planning,and support circular and low-carbon transitions in cities.

关键词： Urban system engineering Built environment stock Spatial pattern Urban sustainability Big geodata

Spatial and Temporal Distribution Characteristics of Solar Energy Resources in Tibet

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Energy engineering 2024年第1期121卷 43-57页

作者： Yanbo Shen Yang Gao Yueming Hu Xin Yao Wenzheng Yu Yubing Zhang Public Meteorological Service Center China Meteorological AdministrationBeijing100081China Center forWind and Solar Energy Resources China Meteorological AdministrationBeijing100081China School of Applied Meteorology Nanjing University of Information Science&TechnologyNanjing210044China School of geographical sciences Nanjing University of Information Science&TechnologyNanjing210044China

The Tibet Plateau is one of the regions with the richest solar energy resources in the *** the process of achieving carbon neutrality in China,the development and utilization of solar energy resources in the region will play an important *** this study,the gridded solar resource data with 1km resolution in Tibet were obtained by spatial correction and downscaling of SMARTS *** this basis,the spatial and temporal distribution characteristics of solar energy resources in the region in the past 30 years(1991–2020)are finely evaluated,and the annual global horizontal radiation resource is *** results show that:1)The average annual global horizontal radiation amount in Tibet is 1816 kWh/m^(2).More than 60%of the area belongs to the“Most abundant”(GHI≥1750 kWh/m^(2))area of China’s solar energy resources category A,and nearly 40%belongs to the“Quite abundant”(1400≤GHI<1750)area of China’s solar energy resource category B.2)In space,the solar energy resources in Tibet increased gradually from north to south and from east to ***,Central and Eastern Shigatse,Shannan,and Southwestern Ali are the most abundant cities,with a maximum annual radiation level of 2189 kWh/m2.3)In terms of time,the total horizontal radiation in Tibet was the highest in May and the lowest in December.74%of the total area belongs to the“Very stable”(R_(w)≥0.47)area of solar resource stability category A,and 26%belongs to the“stable”(0.36≤R_(w)<0.47)area of solar resource stability category *** energy resources in the region show the characteristics of both strong and *** solar energy resources in the region have shown a fluctuating downward trend over the past 30 years,with an average decline of about 12.86(kWh/m2)per decade.4)In terms of solar radiation resources reaching the earth’s surface,the theoretical total amount of annual horizontal radiation in Tibet is about 240.07 billion tons of standard coal or 222.91 billion kilowatts on average.

关键词： Tibet solar resource spatiotemporal distribution

陆表生产力对水分胁迫响应的全球评估（英文）

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Science Bulletin 2024年第15期 2352-2356页

作者：刘琦郭华东张佳华李世杰李吉姚凤梅 Miguel D.Mahecha Jian Peng School of Computer engineering Jiangsu University of Technology College of Earth and Planetary sciences University of Chinese Academy of Sciences department of Remote Sensing Helmholtz Centre for Environmental Research-UFZ Remote Sensing Centre for Earth System Research Leipzig University Aerospace Information Research Institute Chinese Academy of Sciences Remote Sensing and Digital Earth Center School of Computer Science and Technology Qingdao University Key Laboratory of Earth Observation of Hainan Province Hainan Aerospace Information Research Institute Chinese Academy of Sciences School of geographical sciences Nanjing University of Information Science and Technology Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences German Centre for Integrative Biodiversity Research (iDiv)

In recent decades, climate warming has led to an increase in atmospheric water demand, a potential reduction in soil moisture and a rise in the frequency and intensity of droughts. This has intensified the effects of water stress on plants, leading to more vegetated areas experiencing water stress [1,2]. Soil moisture (SM)and vapor pressure deficit (VPD) are considered the two main factors that exert water stress on vegetation activity and terrestrial productivity, thereby affecting the global carbon cycle [3].

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Spatiotemporal distribution, environmental risk and carbon emission reduction potential of livestock manure in Shaanxi Province, China

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Frontiers of Agricultural Science and engineering 2024年第3期11卷 381-396页

作者： Mengyuan QIAO Jianchun ZHU Ronghua LI Junting PAN Ran XIAO Hailong WANG Kuok Ho Daniel TANG Zengqiang ZHANG College of Humanities & Social Development Northwest A&F University College of Natural Resources and Environment Northwest A&F University Key Laboratory of Low-carbon Green Agriculture in Northwestern China Ministry of Agriculture and Rural Affairs Key Laboratory of Non-point Source Pollution of Ministry of Agricultural and rural Affairs Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin College of Resources and Environment Southwest University Biochar engineering Technology Research Center of Guangdong Province School of Environmental and Chemical Engineering Foshan University department of Environmental Science University of Arizona

Shaanxi is a leading province in animal husbandry（AH） in China. However, the lack of provincial information on the characteristics and utilization potential of livestock manure（LM） hinders crucial management decisions. Therefore, we investigated the spatiotemporal distribution, availability and biogas potential of LM in Shaanxi, and examine the carbon emission reduction potential of *** has been a 1.26-fold increase in LM quantities in Shaanxi over the past 35 years, reaching 4635.6 × 10～4 t by 2021. LM was mainly concentrated in northern Shaanxi and the eastern part of Hanzhong. Cattle and pig manure were the primary sources of LM, with the average LM land-load of 14.57 t·ha-1in 2021. While the overall AH in Shaanxi has not exceeded the environmental capacity, the actual scales of AH in Ankang and Hanzhong have already surpassed the respective environmental capacities, posing a higher risk of N and P pollutions. In 2021, the estimated biogas energy potential of LM was 1.2 × 1011MJ. From 2012 to 2021, the average carbon emission reduction potential in Shaanxi was 22%, with an average potential scale of 10%. The results of this research provide valuable data and policy recommendations for promoting the intensive use of LM and reducing carbon emissions in Shaanxi.

关键词： Livestock manure emission estimation N and P loads biogas potential carbon emission reduction

Boosting spring runoff into the sea by reservoir regulation and its potential for estuarine fishery recovery

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Science China Earth sciences 2024年第5期67卷 1591-1603页

作者： Xiao WU Houjie WANG Yongyong FAN Naishuang BI Chiyuan MIAO Jingping XU Zuosheng YANG College of Marine Geosciences Key Laboratory of Submarine Geosciences and Prospecting Technologyand Frontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266100China Laoshan National Laboratory Qingdao 266061China Institute of the Yellow River Estuary and Coast Science Dongying 257000China State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China department of Ocean Science&engineering Southern University of Science and TechnologyShenzhen 518055China

With global surge in reservoir construction over the past decades,river systems worldwide have been profoundly ***,flow manipulation by reservoirs has altered the natural hydrological processes,resulting in extensive modifications of fluvial-marine *** the adverse ecological consequences of reservoirs has become a global concern and has garnered increasing *** Yellow River,as one of the most extensively manipulated river systems globally,has experienced substantial changes in the amount and timing of water discharge due to the presence of numerous reservoirs scattered throughout its catchment *** alterations have caused physicochemical changes in the estuary and subsequent modifications to the estuarine *** recent years,the Yellow River Conservancy Committee initiated the release of water through the Xiaolangdi Dam during the major spawning period of fisheries,specifically in the spring,with the aim of improving the estuarine ecological *** 2011 to 2020,a total of 84.05 km^(3)of water was discharged from the Xiaolangdi Reservoir during spring seasons,of which 40%(33.16 km^(3))constituted water impounded within the reservoir during preceding ***,the spring water discharge from the Yellow River to the sea increased significantly from 1.50 km^(3)/yr to 3.46 km^(3)/yr in the past decade,leading to a decrease in estuarine salinity by 1.6 *** estuarine fishery resources,such as fish eggs in the Yellow River estuary,have demonstrated evident *** reservoir regulation in the Yellow River,which has successfully enhanced spring water discharge and subsequently restored estuarine fishery resources,presents an effective attempt for mitigating the adverse ecological effects associated with reservoirs.

关键词： Reservoir regulation Water release Spring runoff Estuarine ecosystem Yellow River

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Multi-genome evolutionary study of the ABC1 gene family and identification of the pleiotropic effects of OsABC1-13 in rice development

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The Crop Journal 2024年第4期12卷 1022-1030页

作者： Fuying Ma Mingyu Liu Peiwen Yan Shicong He Jian Hu Xinwei Zhang Fuan Niu Jinhao Cui Xinyu Yuan Xiaoyun Xin Liming Cao Jinshui Yang Ying Wang Xiaojin Luo State Key Laboratory of Genetic engineering and engineering Research Center of Gene Technology(Ministry of Education) School of Life SciencesFudan UniversityShanghai 200433China Ministry of Education Key Laboratory for Biodiversity Science and Ecological engineering Department of Ecology and Evolutionary BiologySchool of Life SciencesFudan UniversityShanghai 200433China Institute of Crop Breeding and Cultivation Shanghai Academy of Agricultural SciencesShanghai 200241China Ministry of Education Key Laboratory of Crop PhysiologyEcology and Genetic Breeding College of AgronomyJiangxi Agricultural UniversityNanchang 330045JiangxiChina

In four rice genomes,85 ABC1-family genes were identified by comparative genomics,evolution,genetics,and ***,OsABC1-13,was shown by knockdown and knockout experiments to affect plant height,grain size,and photosynthet... 详细信息

关键词： Multi-genome analysis Activity of bc1 complex gene Photosynthesis Biomass Osabc1-13 Haplotype