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Wuhan University Journal of Natural sciences 2005年第4期10卷 779-784页

作者： zhang {1.-jun {1. Institute of mountain hazards and environment, chinese academy of sciences, chengdu 61.041. sichuan, China 2. Graduated School of the chinese academy of sciences, Beijing 1.0039, China chinese {1. of sciences Institute of Mountain Hazards and Environment Chengdu Sichuan China (GRID:grid.9227.e) (ISNI:***) Graduated School of the chinese academy of sciences Beijing China (GRID:grid.9227.e) (ISNI:***)

Based on the study of visitors' individual spatial behaviors, a tourists'spatial behavior simulator (TSBS) to assess the carrying capacity of tourist resorts was developed,TSBS employs GIS (Geographic Information System) to manage the spatial data,and Multi-Agent systemto simulate the actions of individual visitors. By utilizing TSBS, visitors' travel patterns such aslocation, cost, and state can be analyzed and predicted. Based on this analysis and prediction, themodel of assessing the carrying capacity of resorts is built. Our results show that TSBS will be aneffective tool to accurately assess the carrying capacity of tourist resorts.

关键词： tourist resort carrying capacity TSBS GIS Multi-Agent simulator

Dynamic Identification and Evolution of Urban-suburban-rural Transition Zones Based on the Blender of Natural and Humanistic Factors: A Case Study of chengdu, China

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chinese Geographical Science 2024年第5期34卷 791-809页

作者： DENG Wei JIANG Zhenyuan zhang Shaoyao {1. Ping zhang Hao WANG Zhanyun The Faculty Geography Resources Science Sichuan Normal UniversityChengdu 610101China Sustainable Development Research Center of Resources and environment in Western {1. Sichuan Normal UniversityChengdu 610101China Institute of mountain {1. and environment Chinese Academy of SciencesChengdu 610041China

Urban-suburban-rural(U-S-R)zones exhibit distinctive transitional characteristics in interaction between human and nature.U-S-R transition zones(U-S-RTZ)are also highlighting the function diversity and landscape heterogeneity across territorial *** a super megacity in western China,chengdu’s rapid urbanization has driven the evolution of U-S-R spaces,resulting in a sequential *** promote the high-quality spatial development of urban-rural region in a structured and efficient manner,it is essential to con-duct a scientific examination of the multidimensional interconnection within the U-S-RTZ *** proposing a novel identifica-tion method of U-S-RTZ and taking chengdu,China as a case study,grounded in a blender of natural and humanistic factors,this study quantitatively delineated and explored the spatial evolutions of U-S-RTZ and stated the optimization orientation and sustainable devel-opment strategies of the production-living-ecological spaces along the U-S-R *** results show that:1.it is suitable for the quantitative analysis of U-S-RTZ by established three-dimensional identification system in this study.2)In 1.90-2020,the urban-sub-urban transition zones(U-STZ)in chengdu have continuously undergone a substantial increase,and the scale of the suburban-rural transition zones(S-RTZ)has continued to expand slightly,while the space of rural-ecological transition zones(R-ETZ)has noticeably compressed.3)The landuse dynamics within U-S-RTZ has gradually increased in *** main direction of landuse transition was from farmland to construction land or woodlands,with the expansion of construction land being the most significant.4)R-ETZ primarily focus on ecological functions,and there is a trade-off relationship between the production-ecological function within the S-RTZ,and in the U-STZ,production-living composite functions are *** study emphasizes the importance of elastic planning and precise governance within the U-

关键词： transition zone urban-suburban-rural zones spatial identification evolution mechanism chengdu,China

Rural Public Investment and Benefit in sichuan's Hilly and {1.ous Areas

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Asian Agricultural Research 2012年第8期4卷 28-32页

作者： zhang Hai-qin 1,3 ,LIU Shao-quan 1 ,LUO ren-fu 2 ,zhang Lin-xiu 2 1. Institute of mountain hazards and environment,chinese academy of sciences,chengdu 61.041.China 2. Institute of Geographic sciences and Natural Resources Research,chinese academy of sciences,Beijing 100101,China 3. Graduate University of{1.},Beijing 100049,China

Using representative sampling survey data,we take the case of roads,domestic water,irrigation facilities,clinics and schools,to give an overview of the status quo of rural public investment in sichuan's hilly and {1.ous areas in the period 2005 -2008; conduct comprehensive analysis of public investment benefit,from the status quo of supply and demand,social benefit and villagers' satisfaction. The results show that the social benefit arising from the construction of road projects is good,while the social benefit arising from the construction of irrigation facilities is poor; the matching effect of supply and demand of public investment is poor,especially for the investment in irrigation facilities; on the whole,villagers' satisfaction with public investment has been promoted,but most of the villagers are still unsatisfied with the current irrigation facilities. The major capital source of rural public investment is from the government,but from the perspective of the villagers' demand,we should further increase the public financial input.

关键词： Rural public investment Social benefit index Evalu

The Analysis of CO2 Influence Factors in Tianquan Cave of Xingwen World Geopark

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四川地质学报 2009年第S1期 113-119页

作者： SHUI Wei 1.HU Yi 2 zhang Bing 3 SU Zheng-an 4 WANG Chen-yi 2 {1. De-you 3 XU Xue-yi 1.CHENG Jin-ping 2(1.Department of Eco-agriculture and Rural Development,{1. Agricultural University,Ya'an 62501.,{1. 2.College of Resources and environment,{1. Agricultural University,Ya'an 62501.,{1. 3.School of Land and Resources,China West Normal University,Nanchong 637002,{1. 4.Institute of mountain hazards and environment,{1.} {1.} of {1.} and Ministry of Water Conservancy,{1.} {1.}{1.)

A Vaisala CARBOCAP Hand-Held Carbon Dioxide Meter GM70 was used to measure CO 2 concentration in Tianquan cave of Xingwen world *** study was done in Tianquan cave during July and August,*** sources include the influence factors of distribution of CO 2:elevation,tourists,cross section and depth of the *** indicated tourists have strong impacts on the CO 2 concentration,while no significant differences could be found among different ***,significant correlation could be found among the depth of cave,the small cross section,the tourist's construction and the CO 2 *** results indicate that the CO 2 concentration in Tianquan cave has no threat to the health of *** results and the data provide a scientific basis for the protection of people's health and the exploitation of cave tourism.

关键词： Xingwen world Geopark Tianquan cave CO 2 concentration Influence factors

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四川省的耕地粮食安全保障问题及对策

西南农业学报 2003年第S1期 15-18页

作者：何毓蓉冯云清张保华吴晓军中国科学院水利部成都山地灾害与环境研究所四川省农业厅四川省农业厅四川成都　61.041 四川成都　61.01.

四川省的耕地和粮食安全问题,已初露端倪。本文从四川省的耕地资源状况分析,看出四川省的人均耕地仅有0 048hm2已低于联合国粮农组织提出的人均耕地警戒线(0 05hm2);四川省的耕地平均每年减少3 68万hm2,至2002年已累计减少80 9万hm2,耕... 详细信息

四川省的耕地和粮食安全问题,已初露端倪。本文从四川省的耕地资源状况分析,看出四川省的人均耕地仅有0 048hm2已低于联合国粮农组织提出的人均耕地警戒线(0 05hm2);四川省的耕地平均每年减少3 68万hm2,至2002年已累计减少80 9万hm2,耕地数量不容乐观。对四川省耕地质量状况,指出有206 7万hm2中低产田土,占四川省总耕地面积的51.。这类耕地类型的土壤质量系数都在0 70以下,属于4～9等的中低质量等级耕地,耕地质量是较差的。四川省的粮食状况,近年来人均粮食占有量也从439 0kg,下降到386 5kg。有较大的下降趋势,从四川省的粮食供需状况分析看出,有粮食供需不平衡的状况。统计分析表明,四川省的粮食生产主要取决于耕地的粮食播种面积。研究结果看出:四川省的粮食供需平衡其总产量应当最少保持在3500万t以上。据此,认为四川省的耕地粮食安全警戒线是确保每年不少于666 7万hm2的粮食播种面积,在此基础上提出了四川省的耕地粮食安全保障对策的几点建议。

关键词：耕地粮食安全警戒线对策四川省

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四川省耕地地力及承载力预测

西南农业学报 2003年第S1期16卷 15-18页

作者：何毓蓉周红艺张保华冯云清石承苍吴晓军陈庆瑞周孝强中国科学院成都山地灾害与环境研究所四川成都610041 四川省农业厅四川成都610015 四川省农科院四川成都610066

四川省的耕地地力以土壤质量系数衡量,多数在0 70以下。按耕地最大生产潜力计算,以线性模型和指数模型预测耕地和人口,在2040年后,四川省的粮食产量与人口需求间将出现亏缺,预计分别缺口粮食523 7024×1.7kg和1.8 4425×1.7kg,那时四川... 详细信息

四川省的耕地地力以土壤质量系数衡量,多数在0 70以下。按耕地最大生产潜力计算,以线性模型和指数模型预测耕地和人口,在2040年后,四川省的粮食产量与人口需求间将出现亏缺,预计分别缺口粮食523 7024×1.7kg和1.8 4425×1.7kg,那时四川将超载人口386 34万人至1.01.20万人。按耕地现实粮食生产力(单产)计算的四川省耕地承载力,从2000年后,出现粮食缺口和人口超载。预计未来50年,粮食亏缺将在887 4259×1.7kg至2982 2803×1.7kg,人口超载达2035 4万人至6840 1.人。表明四川省的耕地超载,耕地粮食形势不容乐观。并依此提出了相应的对策和建议。

关键词：耕地地力土壤质量系数粮食生产潜力人口承载力四川省

Determinants of Public Goods Investment in Rural Communities in mountainous Areas of {1. Province, China

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Journal of mountain Science 2014年第3期11卷 816-824页

作者： GUO Shi-li LIU Shao-quan LUO ren-fu {1. Lin-xiu Institute of mountain {1. and environment Chinese Academy of Sciences Economic Research Center for Western China Southwestern University of Finance and Economics Graduate University of chinese academy of sciences Institute of Geographical sciences and Natural Resources Research Chinese Academy of Sciences

This study aims to investigate two important issues: what are the determinants of public goods investment and what is the government's investment behavior in mountainous areas. The impacts of natural conditions, target, and demand elements on public goods investment are analyzed with statistical method, and the determinants of public goods investment in the areas are obtained by using population-weighted and stepwise regression models with Eviews6.0 software with survey data in 2008 and calculated data based on GIS of 20 typical villages in mountainous regions in sichuan, China. The results showed:(1. natural conditions are the important determinants of public investment. mountainous villages with steep slope have relatively high levels of investment;(2) concentration of population and the educational levels of the village leaders also have important impacts on public goods investment;(3) the government is more concerned with public investment resources particularly in areas characterized by fragile ecological environment and poor agricultural output. These results suggest that the current investment strategy helps to reduce disparities in regional development.

关键词： Determinants Eviews6.0 GIS Public Investment Regression Analysis Rural Development

Influence law of modified glutinous rice-based materials on gravel soil reinforcement and water erosion process

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Journal of mountain Science 2023年第12期20卷 3552-3567页

作者： zhang Weng-xiang PEI Xiang-{1. zhang Xiao-chao WU Xue-min XIAO Wei-yang QIN Liang ZHU Jin-yu State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China. Jiuzhaigou Administration Aba 623400China sichuan Geological {1. Survey and Research Center Chengdu 610084China sichuan Huadi Construction Engineering Co. LtdChengdu 610036China

A large number of loose piles formed by mountain {1. are highly susceptible to hydraulic erosion under rainfall *** use of ecological substrate materials for erosion control and ecological restoration of gravel soil slopes has become a current research hotspot and the study *** post-earthquake slump accumulation gravel soil in Jiuzhaigou was selected as the research object,and the self-developed modified glutinous rice-based material was used to reinforce the gravel *** variable slope flume erosion test and rainfall simulation test were carried out to study the water erosion resistance of the material reconstructed soil under the influence of runoff erosion and raindrop splash *** results show that:As the material content reached 1..5%,the reconstructed soil did not disintegrate after 24 hours of immersion,the internal friction angle was increased by 42.26%,and the cohesion was increased by 235.5%,which played a significant reinforcement *** the process of slope erosion,the soil rill erodibility parameter Kr was only 3‰ of the gravel soil control group,the critical shear force τ increased by 272%,and the soil erosion resistance was significantly *** the process of rainfall and rainfall on the slope,the runoff intensity of the reconstructed soil was stable,and the ability to resist runoff erosion and raindrop splash erosion was *** maximum value of soil loss rate on different slope slopes is 0.02-0.1. g·m^(-2)s^(-1.,which is significantly lower than that of the control group and has better erosion reduction effect.

关键词： Modified glutinous rice substrate Gravel soil Soil reconstruction Trauma repair Water erosion

Effect of dry density on the liquefaction behaviour of Quaternary silt

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Journal of mountain Science 2018年第7期15卷 1597-1614页

作者： zhang Chong-lei JIANG Guan-lu SU Li-{1. Liu Wei-ming ZHOU Gong-dan Key Laboratory of mountain {1. and Earth Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of Sciences Chengdu 610043 China Ministry of Education Key Laboratory of High-speed Railway Engineering School of Civil Engineering Southwest Jiaotong University Chengdu 610031 China CAS Center for Excellence in Tibetan Plateau Earth sciences Beijing 100101 China University of chinese academy of sciences Beijing 100049 China

Quaternary silt is widely distributed in China and easily liquefies during earthquakes. To identify the influence of the dry density on the liquefaction behaviour of Quaternary silt, 40 cyclic triaxial liquefaction tests were performed on loose silt(dry density rd=1.460 g/cm^3) and dense silt(rd=1.586 g/cm^3) under different cyclic stress ratios(CSRs) to obtain liquefaction assessment criteria, determine the liquefaction resistance, improve the excess pore water pressure(EPWP) growth model and clarify the relationship between the shear modulus and damping ratio. The results indicate that the initial liquefaction assessment criteria for the loose and dense silts are a double-amplitude axial strain of 5% and an EPWP ratio of 1. The increase in the anti-liquefaction ability for the dense silt is more significant under lower confining pressures. The CSR of loose silt falls well within the results of the sandy silt and Fraser River silt, and the dense silt exhibits a higher liquefaction resistance than the sand-silt mixture. The relationships between the CSR and loading cycles were obtained at a failure strain of 1.. The EPWP development in the dense and loose silts complies with the "fast-stable" and "fast-gentle-sharp" growth modes, respectively. The power function model can effectively describe the EPWP growth characteristics of the dense silt. Finally, based on the liquefaction behaviour of silt, a suggestion for reinforcing silt slopes or foundations is proposed.

关键词： Liquefaction Quaternary silt Dry density Earthquake magnitude Liquefaction assessment Cyclic stress ratio

Assessing Soil Erosion Rates on Manually-Tilled Hillslopes in the sichuan Hilly Basin Using ^(1.7)Cs and ^(21.)Pb_(ex) Measurements

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Pedosphere 2007年第3期17卷 273-283页

作者： ZHENG Jin-jun HE Xiu-Bin D. WALLING {1. Xin-Bao D. FLANAGAN QI Yong- Qing Institute of mountain {1. and environment Chinese Academy of Sciences Chengdu 610041 （China） Graduate University of the chinese academy of sciences Beijing 100049 （China） Department of Geography University of Exeter Exeter EX4 4RJ （UK） State Key laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of SciencesXi＇an 710075 （China） USDA-ARS National Soil Erosion Research Laboratory West Lafayette Indiana 47907 （USA） Institute of Geographical sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101（China）

Purple soils are widely distributed in the sichuan Hilly Basin and are highly susceptible to erosion, especially on the cultivated slopes. Quantitative assessment of the erosion rates is, however, difficult due to small size of the plots of the manually-tilled land, the complex land use, and steep hillslopes. ^1.7Cs and ^21.Pbex （excess ^21.Pb） tracing techniques were used to investigate the spatial pattern of soil erosion rates associated with slope-land under hoe tillage in Neijiang of the sichuan Hilly Basin. The ^1.7Cs and ^21.Pbex inventories at the top of the cultivated slope were extremely low, and the highest inventories were found at the bottom of the cultivated slope. By combining the erosion rates estimates provided by both ^1.7Cs and 21.Pbex measurements, the weighted mean net soil loss from the study slope was estimated to be 3 1.0 t km^-2 year^-1. which was significantly less than 6 930 t km^-2 year^-1.reported for runoff plots on a 1.° cultivated slope at the Suining Station of Soil Erosion. The spatial pattern of soil erosion rates on the steep agricultural land showed that hoe tillage played an important role in soil redistribution along the slope. Also, traditional farming practices had a significant role in reducing soil loss, leading to a lower net erosion rate for the field.

关键词： ^1.7Cs hoe tillage, ^21.Pbex purple soil soil erosion