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Historical Changes and Multi-scenario Prediction of Land Use and Terrestrial Ecosystem Carbon Storage in China

Chinese Geographical Science 2024年第3期34卷 487-503页

作者： AN Yue TAN Xuelan REN Hui li yinqi ZHOU Zhou College of Resources Hunan Agricultural UniversityChangsha 410128China School of Geographic Science Hunan Normal UniversityChangsha 410081China

Terrestrial carbon storage(CS)plays a crucial role in achieving carbon balance and mitigating global climate change.This study employs the Shared Socioeconomic Pathways and Representative Concentration Pathways(SSPs-RCPs)published by the Intergovernmental Panel on Climate Change(IPCC)and incorporates the Policy Control Scenario(PCS)regulated by China’s land management policies.The Future Land Use Simulation(FLUS)model is employed to generate a 1 km resolution land use/cover change(LUCC)dataset for China in 2030 and 2060.Based on the carbon density dataset of China’s terrestrial ecosystems,the study analyses CS changes and their relationship with land use changes spanning from 1990 to 2060.The findings indicate that the quantitative changes in land use in China from 1990 to 2020 are characterised by a reduction in the area proportion of cropland and grassland,along with an increase in the impervious surface and forest area.This changing trend is projected to continue under the PCS from 2020 to 2060.Under the SSPs-RCPs scenario,the proportion of cropland and impervious surface predominantly increases,while the proportions of forest and grassland continuously decrease.Carbon loss in China’s carbon storage from 1990 to 2020 amounted to 0.53×10^(12)kg,primarily due to the reduced area of cropland and grassland.In the SSPs-RCPs scenario,more significant carbon loss occurs,reaching a peak of8.07×10^(12)kg in the SSP4-RCP3.4 scenario.Carbon loss is mainly concentrated in the southeastern coastal area and the Beijing-TianjinHebei(BTH)region of China,with urbanisation and deforestation identified as the primary drivers.In the future,it is advisable to enhance the protection of forests and grassland while stabilising cropland areas and improving the intensity of urban land.These research findings offer valuable data support for China’s land management policy,land space optimisation,and the achievement of dual-carbon targets.

关键词： land use change Future Land Use Simulation(FLUS)model carbon storage carbon density dataset land use scenario China

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Simulation of urban expansion using geographical similarity transition rules and neighbourhood sizes

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Journal of Geographical Sciences 2024年第7期34卷 1394-1414页

作者： li yinqi AN Yue ZHOU Zhou REN Hui TAN Xuelan College of Resources Hunan Agricultural UniversityChangsha410128China College of Geographical Sciences Hunan Normal UniversityChangsha410081China

Most existing cellular automata(CA)models impose strict requirements on the number and spatial distribution of samples.This makes it a challenge to capture spatial heterogeneity in urban dynamics and meet the modeling needs of large and complex geographic areas.This paper presents a CA model based on geographically optimal similarity(GOS)transition rules and similarly sized neighborhoods(SSN).By comparing the similarity in geographical configuration between samples and predicted points,the model enables a comprehensive characterization of the driving mechanism behind urban expansion and its self-organizing scope.This helps to mitigate the impact of sample selection and assumptions about spatial stationarity on simulation results.The performance of GOS-SSN-CA simulation was tested by taking the urban expansion in the Changsha-Zhuzhou-Xiangtan urban agglomeration in China as an example.The results show that GOS can derive more accurate and reliable urban transition rules with fewer samples,thereby significantly reducing spatial prediction errors compared with logistic regression.Moreover,SSN selects different neighborhood sizes to represent the difference between the local self-organizing range and surrounding cells,thus further improving the simulation accuracy and restricting urban expansion morphology.Overall,GOS-SSN-CA effectively characterizes the geographical similarity of urban expansion,improves simulation accuracy while constraining the urban expansion form,and enhances the practical application value of CA.

关键词： urban growth cellular automata geographic similarity model optimization spatial nonstationarity

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Petrogenetic model of the Permian Tarim Large Igneous Province

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Science China Earth Sciences 2017年第10期60卷 1805-1816页

作者： YU Xing YANG ShuFeng CHEN Hanlin li ZiLong li yinqi Key Lab of Seabed Geosciences Second Institute of OceanographyState Oceanic Administrator School of Earth Sciences Zhejiang University

Over the last two decades great strides have been made in characterizing the spatial distribution, time sequence,geochemical characteristics, mantle sources, and magma evolution processes for various igneous rocks in the Early Permian Tarim Large Igneous Province(TliP). This work has laid a solid foundation for revealing the evolutionary processes and genetic models of large igneous provinces(liPs). This study systematically demonstrates the two-stage melting model for the TliP based on our previous research work and predecessor achievements, and highlights the two types of magmatic rocks within the TliP.The two-stage melting model suggests that the formation of the TliP is mantle plume related. The early hot mantle plume caused the low-degree partial melting of the lithosphere mantle, while in the later stage, the plume partially melted due to adiabatic uplift and decompression. Therefore, this model carries signatures of both the "Parana" and "Deccan" models in terms of mantle plume activity. During the early stage, the mantle plume provided the heat required for partial melting of sub-continental lithosphere mantle(SCLM), similar to the "Parana Model", while later the plume acted as the main avenue for melting, as in the "Deccan Model". Basalts that erupted in the first stage have higher 87Sr/86 Sr, lower 143Nd/144 Nd ratios, and are enriched in large ion lithophile elements and high field strength elements, indicating a possible origin from the enriched continental lithosphere mantle,similar to the Parana type geochemical features. The basic-ultrabasic intrusive rocks in the second stage exhibit lower 87Sr/86 Sr,higher 143Nd/144 Nd ratios relative to the basalts, consistent with the involvement of a more depleted asthenospheric material,such as a mantle plume, similar to the Deccan type geochemical features. The first stage basalts can be further subdivided into two categories, i.e., Group 1 and Group 2 basalts. Group 2 basalts have lower 87Sr/86 Sr and higher 143Nd/144 Nd ratios than Group 1 basalts, and lie

关键词：大火成岩省成因模型塔里木大陆岩石圈地幔地球化学特征二叠纪地幔柱活动基性侵入岩

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Early Permian Tarim Large Igneous Province in northwest China

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Science China Earth Sciences 2013年第2期56卷 2015-2026页

作者： YANG ShuFeng CHEN Hanlin li ZiLong li yinqi YU Xing li DongXu MENG liFeng Department of Earth Sciences Zhejiang University Second Institute of Oceanography

Tarim Large Igneous Province(TliP)is the second Late Paleozoic liPs in China after the recognition of Emeishan liP,and is a hot research topic in geosciences.On the basis of the analysis of research history about TliP,this paper summarizes the research result during last twenty years and suggests the key research area in the future.The residual distribution range of TliP is up to 250000 km2,and the largest residual thickness is 780 m.The eruption of basalt happened during 290–288 Ma and belongs to liPs magmatic event with fast eruption of magma.The lithological units of the TliP include basalt,diabase,layered intrusive rock,breccia pipe mica-olivine pyroxenite,olivine pyroxenite,gabbro,ultramafic dyke,quartz syenite,quartz syenite porphyry and bimodal dyke.The basalt and diabase of TliP exhibit OIB-like trace element patterns and enrichment of liLE and HFSE,and mainly belong to high TiO2series.There is an obvious difference in isotope among the basalt from Keping and the basalt and dibase from the northern Tarim Basin.The basalt from Keping with negative Nd and high REE value derives from enriched mantle,and the diabase and basalt from the northern Tarim Basin with positive Nd and low REE value are related to depleted mantle.The crust uplifting in the Early Permian and the development of picrite and large scale dyke and formation of large scale V-Ti-Magnetite deposit in Wajilitag area support the view that the TliP is related to mantle plume.The TliP has a temporal-spatial relationship with Permian basic to ultra-basic igneous rock,which is distributed widely in Central Asia,and they represent a tectono-magmatic event with very important geodynamic setting.This paper also suggests that the deep geological process,the relation with mantle plume,mineralization,the relation with environmental change and biological evolution,and the geodynamics of the TliP will be the key research topics in the future.

关键词：塔里木盆地北部大火成岩省中国西北地区早二叠世地球动力学背景岩浆活动深部地质过程富集地幔

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整体煤气化联合循环汽轮机三改联动改造方案

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热力透平 2024年第2期53卷 93-96,112页

作者：王彪李胤祺上海汽轮机厂有限公司上海200240

整体煤气化联合循环(IGCC)发电站的主要燃料依然是煤炭。为了适应新形势下国家对煤电机组“三改联动”的要求和用户的实际需求,针对某IGCC电站汽轮机节能降耗改造、供热改造和灵活性改造等方案进行了研究。通过对比不同改造方案的技术... 详细信息

整体煤气化联合循环(IGCC)发电站的主要燃料依然是煤炭。为了适应新形势下国家对煤电机组“三改联动”的要求和用户的实际需求,针对某IGCC电站汽轮机节能降耗改造、供热改造和灵活性改造等方案进行了研究。通过对比不同改造方案的技术路线和经济性,最终确定双转子互换循环水供热改造方案为优选方案,其主要包括非供暖季的通流改造和供暖季的高背压循环水供热改造。该方案实施后,机组各项性能指标将明显提高,纯凝热耗率验收工况下的热耗设计值将降低约5.15%,出力设计值比改造前增加约8.4%,对外供热功率约为186.67 MW。所提改造方案具有良好的经济效益和社会效益,可为类似机组的“三改联动”改造提供参考。

关键词：整体煤气化联合循环三改联动节能改造循环水供热改造

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地理学视角下中国农业功能研究进展与展望

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热带地理 2024年第1期44卷 56-67页

作者：谭雪兰李印齐安悦周舟刘悦朱晶晶湖南农业大学资源学院长沙410128

伴随中国城镇化、工业化、市场化的快速推进及乡村振兴战略的深入实施,中国农业发展迈入转型升级的新时期。国内学者高度重视农业发展及农业产业为全社会所提供的服务,地理学者充分发挥学科优势,逐步融合多学科理论与方法针对农业功能... 详细信息

伴随中国城镇化、工业化、市场化的快速推进及乡村振兴战略的深入实施,中国农业发展迈入转型升级的新时期。国内学者高度重视农业发展及农业产业为全社会所提供的服务,地理学者充分发挥学科优势,逐步融合多学科理论与方法针对农业功能的概念内涵、理论基础、分类体系、测度评价、时空过程、影响因素及优化路径等开展了诸多研究。文章通过梳理中国知网平台上近10年核心期刊中关于农业功能的学术论文,选取了151篇高质量文献进行研究,得到以下几点结果:1)地理学者聚焦于农业的生产功能、经济功能、及生态功能等方面研究,更加关注农业功能空间分布、地理特征及其与环境的关系;2)人地关系地域系统理论、农业多功能理论、农业区位理论和农业功能阶段论等是农业功能研究的基础,地理学者正不断完善和丰富农业功能相关理论;3)基于GIS和RS技术以及地理数学模型,地理学者进一步研究了农业功能的空间变化与地域特征;4)地理学者科学诊断了不同地理环境下各因子的作用方式、方向与强度,并针对地区地理环境与影响因子进行功能区划与优化;5)未来地理学视角下的农业功能研究需要进一步完善理论框架体系,推动多要素、多尺度、多目标的体系研究;聚焦农业功能转型,强化多学科、大数据、新技术手段的集成研究。

关键词：地理学农业功能农业可持续发展乡村振兴中国

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The Character and Petrogenetic Model of the Permian Tarim Large Igneous Province

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Acta Geologica Sinica(English Edition) 2020年第S1期94卷 7-7页

作者： CHEN Hanlin YANG Shufeng li Zilong YU Xing li yinqi Zhejiang University HangzhouZhejiang 710054

Tarim Large Igneous Province(TliP)is the second Late Paleozoic liPs in China after the recognition of the Emeishan liP.The residual distribution range of TliP is up to 250000 km2,and the largest residual thickness is 780 m.The eruption of basalt happened during 290–288 Ma and belongs to liPs magmatic event with fast eruption of magma.The lithological units of the TliP include basalt,diabase,layered intrusive rock,breccia pipe mica-olivine pyroxenite,olivine pyroxenite,gabbro,ultramafic dyke,quartz syenite,quartz syenite porphyry and bimodal dyke.The basalt and diabase of TliP exhibit OIB-like trace element patterns and enrichment of liLE and HFSE,and mainly belong to high TiO2 series.There is an obvious difference in isotope among the basalt from Keping and the basalt and dibase from the northern Tarim Basin.The basalt from Keping with negative Nd and high REE value derives from enriched mantle,and the diabase and basalt from the northern Tarim Basin with positive Nd and low REE value are related to depleted mantle.The crust uplifting in the Early Permian and the development of picrite and large scale dyke and formation of large scale V-Ti-magnetite deposit in Wajilitag area support the view that the TliP is related to mantle plume.The TliP has a temporal-spatial relationship with Permian basicultrabasic igneous rock,which is distributed widely in Central Asia,and they represent a tectono-magmatic event with very important geodynamic setting.This study also systematically demonstrates the two-stage melting model for the TliP based on our previous research work and predecessor achievements,and highlights the two types of magmatic rocks within the TliP.The two-stage melting model suggests that the formation of the TliP is mantle plume related.The early hot mantle plume caused the low-degree partial melting of the lithosphere mantle,while in the later stage,the plume partially melted due to adiabatic uplift and decompression.Therefore,this model carries signatures of both the"Parana"and"Deccan"models in terms of man

关键词： magmatic sequence two type of basic magmatite two-stage melting model TliP

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MPC-based interval number optimization for electric water heater scheduling in uncertain environments

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Frontiers in Energy 2021年第1期15卷 186-200页

作者： Jidong WANG Chenghao li Peng li Yanbo CHE Yue ZHOU yinqi li Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin 300072China School of Engineering Cardiff UniversityCardiff CF 243 AAUK State Grid Chengdu Power Supply Company Chengdu 610041China

In this paper,interval number optimization and model predictive control are proposed to handle the uncertain-but-bounded parameters in electric water heater load scheduling.First of all,interval numbers are used to describe uncertain parameters including hot water demand,ambient temperature,and real-time price of electricity.Moreover,the traditional thermal dynamic model of electric water heater is transformed into an interval number model,based on which,the day-ahead load scheduling problem with uncertain parameters is formulated,and solved by interval number optimization.Different tolerance degrees for constraint violation and temperature preferences are also discussed for giving consumers more choices.Furthermore,the model predictive control which incorporates both forecasts and newly updated information is utilized to make and execute electric water heater load schedules on a rolling basis throughout the day.Simulation results demonstrate that interval number optimization either in day-ahead optimization or model predictive control format is robust to the uncertain hot water demand,ambient temperature,and real-time price of electricity,enabling customers to flexibly adjust electric water heater control strategy.

关键词： electric water heater load scheduling interval number optimization model predictive control uncertainty

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Estimating the Parental Magma Composition and Temperature of the Xiaohaizi Cumulate-Bearing Ultramafic Rock: Implication for Magma Evolution of the Tarim Large Igneous Province, Northwestern China

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Journal of Earth Science 2016年第3期27卷 519-528页

作者： Haowei Sun yinqi li Zilong li Siyuan Zou Charles H.Langmuir Hanlin Chen Shufeng Yang Zhongyuan Ren School of Earth Sciences Zhejiang University Department of Earth and Planetary Sciences Harvard University Guangzhou Institute of Geochemistry Chinese Academy of Sciences

The ultramafic dikes in the Tarim large igneous province（Tarim liP）, exposed in the Xiaohaizi area in the northwestern Tarim Basin of northwestern China, have porphyritic textures, and the olivine and clinopyroxene are as the major phenocryst phases. The groundmass therein consists of clinopyroxene, plagioclase and Fe-Ti oxides, with the cryptocrystalline texture. The olivine phenocrysts in one typical ultramafic dike have Fo（Mg/（Mg＋Fe）） numbers ranging from 73 to 85, which are not in equilibrium with the olivine（Mg# of 89） from the host rock crystalized. Combined with microscope observation, both the olivine and clinopyroxene phenocrysts as well as some Fe-Ti oxides in the ultramafic rock are accounted as cumulates. The liquid（parental magma） composition of SiO2 of 45.00 wt.%–48.82 wt.%, MgO of 9.93 wt.%– 18.56 wt.%, FeO of 5.85 wt.%–14.17 wt.%, CaO of 7.54 wt.%–11.52 wt.%, Al2O3 of 8.70 wt.%–11.62 wt.% and TiO2 of 0.00 wt.%–3.43 wt.% in the Xiaohaizi ultramafic rock was estimated by mass balance, and the results show a reasonable liquid proportion in the cumulate-bearing ultramafic dike（ca. 45%–60% in the whole rock）. The estimated parental magma composition corresponds to a melting temperature of 1 300–1 550 oC, which is equal or higher than those of a normal asthenosphere mantle, supporting the involvement of a mantle plume. Combined with other previous studies, an evolution model for the formation processes of the Xiaohaizi ultramafic dike of the Tarim liP is proposed.

关键词： liquid composition estimate parental magma temperature magmatic evolution mantle plume cumulate-bearing ultramafic dike Tarim large igneous province

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褶皱冲断带物理模拟实验研究进展

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地质学报 2023年第9期97卷 2896-2913页

作者：贾东杨树锋尹宏伟李一泉吴晓俊解国爱励音骐南京大学地球科学与工程学院江苏南京210023 浙江大学地球科学学院浙江杭州310058 南京大学地理与海洋学院江苏南京210023 浙江大学超重力研究中心浙江杭州310058

褶皱冲断带油气资源丰富,统计表明全球探明油气储量约14%分布在褶皱冲断带。自从1815年地质学家第一次以模拟实验的方式验证了褶皱形成于岩层遭受水平挤压变形的二百多年来,针对褶皱冲断带的物理模拟实验研究无疑是最卓有成效的研究领... 详细信息

褶皱冲断带油气资源丰富,统计表明全球探明油气储量约14%分布在褶皱冲断带。自从1815年地质学家第一次以模拟实验的方式验证了褶皱形成于岩层遭受水平挤压变形的二百多年来,针对褶皱冲断带的物理模拟实验研究无疑是最卓有成效的研究领域方向之一。本文从追溯早期模拟实验先驱,到近二十年来国内外相关研究进展综述,着重分析和评述物理模拟实验研究对于前陆褶皱冲断带构造理论发展的主要贡献。强调造山带临界楔体理论以及基底滑脱层强度、流体超压和变形岩层内聚强度等对构造变形过程的控制作用。主要介绍的实验性标志成果有:(1)褶皱冲断带构造变形的生长规律;(2)褶皱冲断带的构造变形机制;(3)褶皱冲断带中构造变形的主控因素。我们的目的是提供引人入胜的物理模拟实验研究成果,吸引更多现在和未来的研究人员理解和重视物理模拟工作,借助日益进步的实验装置和技术方法,促进盆地构造研究在学科发展道路上,一步步实现从定性走向定量、从二维走向三维、从几何学和运动学走向动力学的飞跃。

关键词：褶皱冲断带物理模拟实验生长规律变形机制控制因素

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