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| 1 | Modeling the relationship of land use change and some geophysical indicators for the interlock area of farming and pasturing in China显示文摘This paper discusses land-use changes in the interlock area of farming and pasturing (IAFP)in northern China. It presents detailed analyses of land-use features in the IAFP, which are controlled by the macro geomorphic units and geophysical conditions-constraints or advantages. Additionally, it selects some indicators, according to the availability in acquiring and processing their quantitative data, to analyze the canonical correlations between the typical conversion of grassland and geophysical conditions. The preliminary study indicates that the physical conditions are of great advantages to the development of grassland. There exists significant correlation between land use change and some geophysical conditions. | DENG Xiangzheng, LIU Jiyuan, ZHUANG Dafang, ZHAN Jinyan, ZHAO Tao(Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China) | 2002 | Journal of Geographical Sciences2002，12，4： | 19 |
| 2 | 中国山区农村土地利用转型及其对土地整治的政策启示(英文)显示文摘The cultivation of mountainous land results in water loss and soil erosion. With rapid urbanization and industrialization in China, labor emigration relieves the cultivation of mountainous areas in regions with high poverty and leads to a significant land use transition. This research built an analysis framework for 'land use transition – driving mechanism – effects –responses' for mountainous areas of China undergoing land use transition and then proposed the direction of mountainous land consolidation. The results showed that the turning point of land use morphology was the core of rural land use transition in mountainous areas. The expansion of cropland and the contraction of forestland have transitioned to the abandonment of cropland and the expansion of forestland;this transition was the main characteristic of the dominant land use change. Land marginalization and land ecological functional recovery were the main characteristics of the recessive land use transition in mountainous areas. Socioeconomic factors were the primary driving forces during land use transition in mountainous areas, with labor emigration being the most direct force. The rising costs of farming and the challenging living conditions causing labor emigration were fundamental driving forces. Rural land use transition in mountainous areas reduced the vulnerability of the ecological function of land ecosystems. The advantages and disadvantages of the socioeconomic effects should focus on rural development of mountainous areas as well as the livelihood of farmers;this should be further supported by empirical and quantitative research. Rural land use transition of mountainous areas improves natural restoration and is related to socioeconomic development. Rural land consolidation of mountainous areas should conform to land use transition,with the goal of shifting from the increase of cultivated land to the synergies of ecological and environmental protection. | 张佰林 孙丕苓 姜广辉 张瑞娟 高江波 | 2019 | Journal of Geographical Sciences2019，29，10： | 10 |
| 3 | 咸宁市耕地时空演变及变化驱动力研究显示文摘耕地的变化是国内外研究的热点与焦点,其数量的多少和质量的好坏关系到一个国家的粮食安全、经济发展和社会进步等各个方面。该文以咸宁市为例,利用耕地数量变化的时间序列模型、动态度模型和垦殖指数变化模型,对耕地的时空演变特征进行定量研究,并应用相关分析法、主成分分析法及回归分析法对耕地演变及驱动力进行分析,得出研究结论,并针对不同的驱动力因子提出相应的对策建议。 | 何国松 张威 段成诚 | 2010 | 江西农业学报2010，22，9： | 6 |
| 4 | Development of the model for simulating weld metal solidification cracking in stainless steel显示文摘According to the characteristics of welding process, this paper divided the welding joint of a weldment into three zones: the liquid zone in the molten pool, the solid liquid co existing zone and the solid zone. In order to develop the stress/strain numerical model, the mechanical behaviors of the three zones were analyzed in detail. Moreover, Based on the solid fractions during solidification process and loading unloading deforming curves of stainless steel SUS310, this paper also studied the effects of deformation of molten pool, the rheologic properties and solidification shrinkage on stress/strain evaluating processes. Finally, the influence of the deformation in the molten pool was eliminated by element rebirth method. Furthermore, the algorithm of the thermal stress/strain for the solid metal formulated on the basis of the incremental thermo elastoplastic constitutive theory. As a result, a numerical simulation model of stress/strain distributions for welding solidification crack was developed. | 魏艳红 刘仁培 董祖珏 | 1999 | China Welding1999，8，2： | 4 |
| 5 | Driving Force Model for Non-pneumatic Elastic Wheel显示文摘In order to obtain good driving performance,a driving force model is presented for non-pneumatic elastic wheel.Brush model of pneumatic tyres is introduced and the deformations of elastic supports and tread are also taken into account.The longitudinal slip rate is redefined.The grounding pressure distribution of elastic wheels is analyzed and corrected according to speed,temperature and stiffness.Then rolling resistance equation is developed.Finally,simulation is conducted by software CarSim,and the results show that the estimated values are consistent with simulation values,especially at low longitudinal slip rate.The research can help to optimize design of non-pneumatic elastic wheel. | Li Bo Zhao Youqun Zang Liguo Bei Shaoyi Fu Hongxun Zhang Lanchun | 2016 | Transactions of Nanjing University of Aeronautics and Astronautics2016，33，2： | 3 |
| 6 | Study on Land Use/Cover Changes and the Driving Forces in Xuzhou City显示文摘Based on the remote sensing data of Landsat 5,landscape indexes were used to analyze the land use/cover changes of Xuzhou City during 1994 and 2005,in order to discover the inside driving system.Fourteen social driving forces were chosen according to the PCA theory,and the social driving forces of land use/cover change were analyzed with the help of SPSS software.The result indicated that population,economy,adjustment of agriculture structure were main impact factors of land use/cover changes. | XU Zhenwen WANG Guijun WANG Haitao ZHANG Guoqing | 2013 | Journal of Landscape Research2013，5，9： | 2 |
| 7 | Analysis to driving forces of land use change in Lu’an mining area显示文摘By selecting impact factors of driving force and formulating evaluation criteria of the impacts, the evaluation system of corresponding driving force impact of land use change was established. Taking Lu'an mining area as an example, the specific impact factors of coal mine were comprehensively evaluated and analyzed in order to carry out qualitative and quantitative analysis for the driving force of mining-land use change. The principal component analysis shows that the social and economic development in mining area from 2000 to 2007 demonstrates continuous accelerate trends, and the impacts of its overall driving force to land use change are increased gradually. The socio-economic factors have more impacts to mining-land use change than those of the natural resources. The main driving force of mining-land use change also include population, technological progress and policy. | LIU Chang-hua, MA Xiao-xiao School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454003, China | 2011 | 中国有色金属学会会刊:英文版2011，21，S3： | 2 |
| 8 | NUMERICAL SIMULATION OF STRESS-STRAIN DISTRIBUTIONS FOR WELD METAL SOLIDIFICATION CRACKING IN STAINLESS STEEL显示文摘This paper analyzed the characteristics of welding solidification crack of stainless steels,and clearly re- vealed the the of the deformation in the molten - the pool and the solidification shrinkage on the stress - strain fields in the trail of molten - weld pool.Moreover, rheologic properties of the alloys in solid - liquid zone were also obtained by measuring the hading and unloading deform curves of the steels.As a result, a numerical model for simulation of stress - strain distributions of welding solidifi- cation crack was developed. On the basis of the model,the thesis simulated the driving force of solidifi- cation crack of stainless steels, that is, stress - strain fields in the trail of molten-weld pool with fi- nite element method. | Y. H. Wei R. P. Liu and Z. J. Dong( 1) National Key Laboratory of Advanced Welding Production Technology, HIT, Harbin 150001, China 2) Harbin Research institute of Welding,Harbin 150080, China) | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，1： | 2 |
| 9 | Stress/strain distributions for weld metal solidification crack instain less steels显示文摘This paper has simulated the driving force of solidification crack of stainless steels, that is, stress/strain field in the trail of molten pool. Firstly, the effect of the deformation in the molten pool was eliminated after the element rebirth method was adopted. Secondly, the influence of solidification shrinkage was taken into account by increasing thermal expansion coefficients of the steels at elevated temperatures. Finally, the stress/strain distributions of different conditions have been computed and analyzed. Furthermore, the driving force curves of the solidification crack of the steels have been obtained by converting strain time curves into strain temperature curves, which founds a basis for predicting welding solidification crack. | 魏艳红 刘仁培 董祖珏 张海州 | 2000 | China Welding2000，9，1： | 2 |
| 10 | A Study of the Driving Force for Inclusion Complexation of α- and β-Cyclodextrin with Substituted Benzene显示文摘Introductionα-Cyclodextrinandβ-cyclodextrin(α-andβ-CD)aremacrocyclicoligomersofsixandsevenglucoseunits,respectively.Theyhaveb... | ZHANG Hai ming, LUO Shuang hui, CHEN Chao, LIU Lei GUO Qing xiang ** and LIU You cheng (Department of Chemistry, University of Science and Technology of China, Hefei, 230026 National Laboratory of Applied Organic Chemistry, Lanzhou Universi | 1999 | Chemical Research in Chinese Universities1999，15，1： | 1 |
| 11 | Spatial patterns of net primary productivity and its driving forces:a multi-scale analysis in the transnational area of the Tumen River显示文摘Analyzing the spatial patterns of net primary productivity(NPP)and its driving forces in transnational areas provides a solid basis for understanding regional ecological processes and ecosystem services.However,the spatial patterns of NPP and its driving forces have been poorly understood on multiple scales in transnational areas.In this study,the spatial patterns of NPP in the transnational area of the Tumen River(TATR)in 2016 were simulated using the Carnegie Ames Stanford Approach(CASA)model,and its driving forces were analyzed using a stepwise multiple linear regression model.We found that the total amount of NPP in the TATR in 2016 was approximately 14.53 TgC.The amount of NPP on the Chinese side(6.23 TgC)was larger than those on the other two sides,accounting for 42.88%of the total volume of the entire region.Among different land-use and land-cover(LULC)types,the amount of NPP of the broadleaf forest was the largest(11.22 TgC),while the amount of NPP of the bare land was the smallest.The NPP per unit area was about 603.21 gC/(m2 yr)across the entire region,while the NPP per unit area on the Chinese side was the largest,followed by the Russian side and the DPRK's side.The spatial patterns of NPP were influenced by climate,topography,soil texture,and human activities.In addition,the driving forces of the spatial patterns of NPP in the TATR had an obvious scaling effect,which was mainly caused by the spatial heterogeneity of climate,topography,soil texture,and human activities.We suggest that effective land management policies with cooperation among China,the DPRK,and Russia are needed to maintain NPP and improve environmental sustainability in the TATR. | Jianwen WANG Da ZHANG Ying NAN Zhifeng LIU Dekang QI | 2020 | Frontiers of Earth Science2020，14，1： | 1 |
| 12 | LAND USE AND LAND COVER CHANGE IN CHINA显示文摘This paper deals with land use and land cover change in China in the last 500 years. It aims at sensitizing related fields in giving due consideration on integration of environmental change and social economic development process and at proposing a framework for discussion towards further study. Based on historical review,several important changes were summarized as: natural vegetation were replaced by secondary or cultivated Plants, land cover changes differ from time to time and from place to place:and cropping pattern change is a sensitive indicator of land cover change in China. In the history of Cnina, many factors contributed to land use and land cover change either in positive or negative Ways. Four major driving forces were concluded, namely, climatic change, social transformation and turbulence, technology improvement, and international trade competition. In the last Part of tne Paper, a proposal on 'land use/land cover cnange' is framed, so as to calling comments on improving tne study and collaborations from varied authorities and researcn institutions. | Li ffenll ia(Commission for Integrated Survey of Natural Resources, CAS.Beijing 100101 people’ Republic of China)Liu yanhua(Institute of Geography, CAS, Bejing 100101 people’s Republic of China) | 1994 | Journal of Geographical Sciences1994，4，Z2： | 1 |
| 13 | 中国边境地区城镇化时空格局及其驱动力显示文摘Border area is not only an important gateway for inland opening-up,but also an important part of completing the building of a moderately prosperous society and optimizing national urban spatial pattern in China.Due to the location,natural resources endowment,and traffic accessibility,the urbanization speed is relatively slow in border areas.Therefore,it is a special area that needs to pay close attention to,especially under the background of the Belt and Road Initiative and China's regional coordinated development program.Based on the county-level data from 2000 to 2015,this paper tries to analyze the spatio-temporal pattern of urbanization in 134 border counties,and applies geographical detector method to study the driving forces of urbanization in border areas.Conclusions are as follows:(1)From 2000 to 2015,urbanization rate in border areas has been lower than the national average,and the gap has been widening.Some border counties in southern Xinjiang,Tibet,northeast of Inner Mongolia,and Yunnan,are even facing the problem of population loss.(2)In the same period,urbanization rate in the northwestern and southwestern border is low,while their urbanization rate grows relatively faster comparing with other border counties;urbanization rate in Tibet border is the lowest and grows relatively slowly;urbanization rate in the northeastern and northern border is slightly higher,but it grows slowly or even stagnates.(3)Transportation and industry are the important driving forces of urbanization in border areas,while the driving forces of market is relatively weak.And there are obvious mutual reinforcements among the driving forces,while the effort and explanatory power of resource force increases obviously after interaction.(4)Urbanization rate in the northwestern and southwestern border areas grows relatively fast,with industrial force and transportation force,market force and administrative force as the main driving forces respectively.Tibet border area has the lowest urbanization rate and growth rate,as the driving force of urbanization with strong contribution has not yet formed in Tibet.In the northeastern and northern border areas,the contribution of transportation force to urbanization is greater than other forces,and its interaction with market and industry has obvious effects. | 宋周莺 祝巧玲 | 2020 | Journal of Geographical Sciences2020，30，5： | 1 |
| 14 | CHARACTERIZATION OF THE FRACTURE WORK FOR DUCTILE FILM UNDERGOING THE MICRO-SCRATCH显示文摘The interface adhesion strength(or interface toughness)of a thinfilm/substrate system is often assessed by the micro-scratch test.For a brittle filmmaterial,the interface adhesion strength is easily obtained through measuring thescratch driving forces.However,to measure the interface adhesion strength(or in-terface toughness)for a metal thin film material(the ductile material)by the micro-scratch test is very difficult,because intense plastic deformation is involved and theproblem is a three-dimensional elastic-plastic one.In the present research,usinga double-cohesive zone model,the failure characteristics of the thin film/substratesystem can be described and further simulated.For a steady-state scratching pro-cess,a three-dimensional elastic-plastic finite element method based on the doublecohesive zone model is developed and adopted,and the steady-state fracture workof the total system is calculated.The parameter relations between the horizontaldriving forces(or energy release rate of the scratching process)and the separationstrength of thin film/substrate interface,and the material shear strength,as well asthe material parameters are developed.Furthermore,a scratch experiment for theAl/Si film/substrate system is carried out and the failure mechanisms are explored.Finally,the prediction results are applied to a scratch experiment for the Pt/NiOmaterial system given in the literature. | 魏悦广 赵满洪 唐山 | 2002 | Acta Mechanica Sinica2002，18，5： | 1 |
| 15 | 建设现代新农村显示文摘建设现代新农村梁林宝沿山村地处江苏省江阴市秦望山南麓,现有650户,2500人,可耕地1200亩。70年代末,村集体总资产不足20万元,年人均分配水平仅为130元。80年代初起,我们紧紧抓住国家改革开放的有利时机,加快发展村办工业,壮大集体经济,逐步... | 梁林宝 | 1997 | 中外企业文化1997，，5： | 0 |
| 16 | Deep Earth Processes,Their Effects in the Interior,on the Surface,to Living Organims and Biodiversities显示文摘Interior earth is very hot but consists of concentric layers of varying chemical compositions,pressure and temperature.The concentric layers(shells)are the crust which is the outermost shell,mantle which is the middle layer and core which is the innermost part of the earth.The various mechanisms such as | Didas Makoye M Malimi Sapiance | 2009 | 地学前缘2009，16，S1： | 0 |
| 17 | A Study on the Driving Force for Binding of Benzene Derivatives by α-and β-Cyclodextrin显示文摘A three-dimensional diagram shows that the association constants (Ka) for the inclusionof a- and 6-CD with substitUted benzene are mainly correIated with the molar refraction (R.) andhydrophobic constant (%) of the substitUents of guest compounds. It reveals that the inclusion ofcyclodextrin with the substitUted benzene is dondnantly driYen by van der Waals forces andhydrophobic interactions. | Shuang Hui LUO Hui Ming JMNG You Cheng LIU(National Laboratory of Applied organic Chemistry, Lanzhou University, Lanzhou 730000)Qing Xiang GUO (Department of Chemistry, University of Science and Technology of China, Hefei 230026) | 1998 | Chinese Chemical Letters1998，9，5： | 0 |
| 18 | Canonical corelation analysis to land-use structure and its driving forces——Taking Yulin Prefecture as an example显示文摘Canonicalcorelationanalysistolandusestructureanditsdrivingforces———TakingYulinPrefectureasanexampleZHANGMingInstituteofGeog... | ZHANG MingInstitute of Geography, CAS, Beijing 100101 CHINA | 1998 | Journal of Geographical Sciences1998，8，2： | 0 |
| 19 | A Molecular Modeling for the Complexation of Cyclobis(paraquat-p-phenylene) with Substituted Benzenes and Biphenyls显示文摘Molecular orbital PM3 calculation was performed on the complexation of cyclobis(para-quat-p-phenylene) with a number of 1,4-disubstituted benzenes and biphenyl derivatives. A fair correlation was found between the PM3 calculated binding energies and the experimental ones, which enabled the PM3 calculation to predict the experimental binding energies for a number of important complexes. A good structure-activity relationship was also found between the PM3 calculated binding energies and the substituent molar refraction Rm and Hammett σ constants, indicating that the van der Waals force and the electronic interactions constituted the major driving forces for the complexation of cyclobis(paraquat-p-phenylene). | Zhang, KC Liu, L Mu, TW Guo, QX | 2000 | Chinese Chemical Letters2000，11，11： | 0 |
| 20 | Structural Integrity Assessment of Welded Pressure Vessel Produced of HSLA Steel显示文摘Welded joint is a critical region of a welded structure.The operational safety of welded pressure equipment mostly depends on the behaviour of loaded weldments.Safety of welded structure is dependent on the properties of welded joint as whole and of its constituents (parent metal,heat affected zone and weld metal).In this paper the behaviour of welded joint cracked constituents is considered.Structural integrity assessment procedure is applied to welded pressure vessel produced of high-strength low-alloyed steel,operating at-40°C,comparing crack driving force and material crack resistance,using path-independent contour J-integral as fracture mechanics parameter.The comparison of crack driving force,expressed by J-integral and material resistant curve,J-R curve,provide the possibility to determine the extent of the stable crack as well as the critical crack size for its final fast propagation and also to assess the structural integrity of a cracked pressure vessel. | Milovi Ljubica Vuherer Tomaz Zrili Milorad Momilovi Dejan Jakovi Dragan | 2011 | Journal of Iron and Steel Research(International)2011，18，S1： | 0 |
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