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Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001–2013

Journal of Geographical Sciences 2017年第2期27卷 143-160页

作者： GONG Zhaoning ZHAO Shuyi GU Jinzhi Beijing Laboratory of Water Resources Security Key Laboratory of 3D Information Acquisition and Application Ministry of Education Key Laboratory of Resources Environment and GIS of Beijing college of resourceenvironment&tourism Capital Normal UniversityBeijing 100048China

Climate change is one of the most important factors that affect vegetation distribution in North China. Among all climatic factors, drought is considered to have the most significant effect on the environment. Based on previous studies, the climate drought index can be used to assess the evolutionary trend of the ecological environment under various arid climatic conditions. It is necessary for us to further explore the relationship between vegetation coverage（index） and climate drought conditions. Therefore, in this study, based on MODIS-NDVI products and meteorological observation data, the Palmer Drought Severity Index（PDSI） and vegetation coverage in North China were first calculated. Then, the interannual variations of PDSI and vegetation coverage during 2001–2013 were analyzed using a Theil-Sen slope estimator. Finally, an ecoregion perspective of the correlation between them was discussed. The experimental results demonstrated that the PDSI index and vegetation coverage value varied over different ecoregions. During the period 2001–2013, vegetation coverage increased in the southern and northern mountains of North China, while it showed a decreasing trend in the Beijing-Tianjin-Tangshan City Circle area and suburban agricultural zone located in Hebei Province and Henan Province）. Over 13 years, the climate of the northeastern part of North China became more humid, while in the southern part of North China, it tended to be dry. According to the correlation analysis results, 73.37% of North China showed a positive correlation between the vegetation coverage and climate drought index. A negative correlation was observed mainly in urban and suburban areas of Beijing, Tianjin, Hebei Province, and Henan Province. In most parts of North China, drought conditions in summer and autumn had a strong influence on vegetation coverage.

关键词： North China vegetation coverage PDSI ecoregion correlation analysis

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Influence of salinity and moisture on the threshold shear velocity of saline sand in the Qarhan Desert, Qaidam Basin of China: A wind tunnel experiment

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Journal of Arid Land 2019年第5期11卷 674-684页

作者： LI Chao DONG Zhibao YIN Shuyan CHEN Guoxiang YANG Junhuai college of Geography and tourism Shaanxi Normal University

Determination of the threshold shear velocity is essential for predicting sand transport,dust release and *** this study,a wind tunnel experiment was conducted to evaluate the influence of salinity and moisture on the threshold shear velocity of saline *** sand samples(mean particle size of 164.50–186.08μm and the total silt,clay and salt content of 0.80%–8.25%)were collected from three saline sand dunes(one barchan dune and two linear dunes)in the Qarhan Desert,Qaidam Basin of *** saline sand samples were placed in two experimental trays for wet and dry processing to simulate deliquescence and desiccation,*** moisture content ranging from 0.30% to 1.90% was generated by the steam method so that the saline sand can absorb water in a saturated water vapor *** motion of sand particles was determined by the observers with a solid *** laser sheet(0.80 cm thick),which was emitted by the solid laser,horizontally covered the sand surface and was bound to the *** show that the cohesion of saline sand results from a combination of salt and *** threshold shear velocity increases exponentially with the increase in crust thickness for the linear sand *** is a positive linear correlation between the original moisture content and relative threshold shear *** threshold shear velocity of dewatered sand is greater than that of wet sand with the same original moisture *** results will provide valuable information about the sand transport of highly saline soil in the desert.

关键词： threshold shear velocity saline sand barchan dune linear dune crust thickness moisture content Qaidam Basin

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Potentials of community-based tourism in transformations towards green economies after the 2008 Wenchuan earthquake in West China

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Journal of Mountain Science 2016年第9期13卷 1688-1700页

作者： TANG Yong Department of tourism Management and Development College of Tourism and Urban-rural Planning Chengdu University of Technology

This study investigates the contrasting sceneries of community-based tourism after the 2008 Wenchuan earthquake and focuses on the potentials of tourism in transformations towards green economies. How are tourism and environment linked in a sustainable relationship? And how can potentials of community-based tourism be directed in transformations towards green economies? A qualitative research design is used to examine contrasting sceneries and specific green elements of community-based tourism in a Qiang people's fortress village in Mao County, Sichuan Province, West China and further discuss how tourism can be compatible with human wellbeing through demonstrating a commitment to sustainable development. The study argues that potential economic, social and environmental costs of tourism need to be considered when evaluating the loss of community benefits toward sustainability. The green elements suggest the potential of community-based tourism in transformations towards green economies, involving green agricultural, green building, and green energy, green governance, green service and green consumption. This study will contribute to the debate about the relationship between tourism and environment sustainability in the green economies, as well as the critique of what can be learned for community development from green tourism in mountainous regions after the inevitable natural disasters.

关键词： Green economy Sustainable tourism Green tourism Community tourism Wenchuanearthquake Mountains

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Dark Touristic Perception: Motivation, Experience and Benefits Interpreted from the Visit to Seismic Memorial Sites in Sichuan Province

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Journal of Mountain Science 2014年第5期11卷 1326-1341页

作者： TANG Yong Department of tourism Development and Management College of Tourism and Urban-rural Planning Chengdu University of Technology

This study investigates the motivations of Chinese domestic tourists visiting seismic memorial sites after the great Wenchuan earthquake of 2008, and examines their interpretation of experiences and benefits of the visits. Recent research on dark tourism has raised the possibility that people are attracted to death and memorial sites in ways different from other tourist attractions. The study used an empirical research design employing questionnaires to collect data from 255 Chinese domestic visitors at seismic memorial sites in west Sichuan. Analysis revealed that the obligation of commemoration mixed with curiosity represents a different set of travel motivation in dark tourism settings than in other kinds of tourism. In addition, the empirical evidence also suggests an interrelated pattern between motivations, experiences and benefits. This study implies that Chinese domestic tourists were attracted in ways different from other tourist attractions both because they tended to fulfill their obligation of commemoration and were interested in destruction; and visitor experiences played an important mediating role between travel motivations and benefits gained.

关键词： Dark tourism Travel Motivation Tourist Perception Chinese Domestic Tourists Seismic Memorial sites Wenchuan earthquake Mountains

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An Evolutionary Economic Geography Perspective on Types of Operation Development in West Lake, China

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Chinese Geographical Science 2017年第3期27卷 482-496页

作者： YANG Xingzhu ZHA Yanyan LU Lin YANG Yang college of Territorial Resources and tourism Anhui Normal University School of tourism and Hospitality Management Temple University

The types of operation play a key role in facilitating tourism consumption and economic development in a tourism destination. By adopting evolutionary economic geography theory, the paper analyzes the types of operation in West Lake Scenic Area from 1978 to 2013. First, an evolution process consisting of four stages is underpinned, and they are: the new establishment stage, the preliminary development stage, the speedup development stage, and the stabilized maturity stage. Specifically, the distinct characteristics associated with operation types are compared and evaluated at different stages throughout the process. The evolution trees are introduced to scrutinize types of operation development. The results of evolution trees demonstrate the substantial increase in both numbers and types. Second, by applying GIS spatial analysis, the paper also analyzes the spatial evolution characteristics on the types of operation, and the results unveil the co-existence of centripetal and centrifugal forces: the processes of spatial agglomeration and spatial dispersion. More specifically, we recognize the spatial process includes the emergence of node and concentration(1978–1995), the sparse distribution and intensity reduction(1996–2002), the patchy distribution and spatial agglomeration intensification(2003–2008), the dispersed distribution and core area agglomeration(2009–2013). Lastly, path dependence on resource endowment, government and market innovation, knowledge learning and spillover can reasonably explain the types of operation evolution. In conclusion, the evolutionary economic geography theories provide new theoretical and empirical perspectives for tourism policy analysis. At the same time, our comprehensive evidences impart more comprehensive insights and offer useful managerial and policy implications.

关键词： types of operation evolutionary economic geography spatial process West Lake China

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Trade-offs and synergies between ecosystem services in Yutian County along the Keriya River Basin,Northwest China

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Journal of Arid Land 2024年第7期16卷 943-962页

作者： ZUBAIDA Muyibul college of tourism Xinjiang UniversityUrumqi 830049China

The Keriya River Basin is located in an extremely arid climate zone on the southern edge of the Tarim Basin of Northwest China,exhibiting typical mountain-oasis-desert distribution *** recent decades,climate change and human activities have exerted significant impacts on the service functions of watershed ***,the trade-offs and synergies between ecosystem services(ESs)have not been thoroughly *** study aims to reveal the spatiotemporal changes in ESs within the Keriya River Basin from 1995 to 2020 as well as the trade-offs and synergies between *** the Integrated Valuation of Ecosystem Services and Trade-offs(InVEST)and Revised Wind Erosion Equation(RWEQ)using land use/land cover(LULC),climate,vegetation,soil,and hydrological data,we quantified the spatiotemporal changes in the five principal ESs(carbon storage,water yield,food production,wind and sand prevention,and habitat quality)of the watershed from 1995 to *** correlation coefficients were used to analyze the trade-offs and synergies between ES *** findings reveal that water yield,carbon storage,and habitat quality exhibited relatively high levels in the upstream,while food production and wind and sand prevention dominated the midstream and downstream,***,carbon storage,food production,wind and sand prevention,and habitat quality demonstrated an increase at the watershed scale while water yield exhibited a decline from 1995 to ***,carbon storage,wind and sand prevention,and habitat quality presented an upward trend in the upstream but downward trend in the midstream and *** production in the midstream showed a continuously increasing trend during the study ***-off relationships were identified between water yield and wind and sand prevention,water yield and carbon storage,food production and water yield,and habitat quality and wind and sand *** temporal and spatial synergi

关键词： ecosystem services trade-offs synergies water yield,food production habitat quality wind and sand prevention Tarim Basin

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Feasibility Study of Applying Recycled Aggregate from Building Debris in Concrete

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沈阳建筑大学学报（自然科学版） 2011年第6期27卷 1137-1145页

作者：彭予柱 Taiwan Hospitality and tourism college

Coarse and fine aggregate constitutes an average of approximately 55% to 80% of the total volume of concrete *** remains the most commonly-used building material *** a result,the massive use of aggregate will have a direct impact on the earth′s natural resources if an appropriate replacement material is not found,violating the spirit of sustainable *** study makes a preliminary examination of using coarse and fine aggregate produced from discarded construction materials in *** indicate that the compressive strength of densified mixture concrete at 28 days can reach 56.88 MPa(recycled materials used as coarse aggregate,and natural sand used as fine aggregate)and 53.33 MPa(recycled materials used as both coarse and fine aggregate).While this type of material is not yet fully understood,further research into this area should enable feasible applications in ***,unsuitable mixtures have serious impact on the durability and overall economy of *** further research on suitable mixture designs,a complete application of recycled aggregate in concrete can be expected.

关键词： sustainable development construction waste materials recycled aggregate densified mixture

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Development Mechanism of Urban System in Rapidly Changing Period in China

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Chinese Geographical Science 2007年第1期17卷 10-18页

作者： DU Guoqing college of tourism Rikkyo （St. Paul） University Japan

The purpose of this research is to investigate the socio-economic development mechanism of China’s urban system in terms of spatial structure and its change. Totally 246 cities from 340 designated cities in 1985, and 488 from 640 designated cities in 1995 are selected as sample cities. And 22 attributes concerning urban features are analyzed to clarify the socio-economic characteristics and their changes in the urban system. Finally, the primary development factors are verified with the relationship of spatial structure and socio-economic characteristics. In conclusion, the socio-economic changes occurred more extremely than spatial structure changes. Furthermore, foreign investment be- came a major power for the development of China’s urban system in the period of 1985–1995.

关键词： urban system socio-economic development foreign investment China

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Study on How to Improve tourism English Major Students’English Communicative Ability in Higher Vocational college

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Journal of Literature and Art Studies 2024年第8期14卷 726-729页

作者： SHEN Hua-ying School of Digital and Cultural tourism Sichuan Vocational and Technical CollegeSuining 629000China

tourism English Major students’English communicative ability is very important for students’to promote professional *** is necessary for students to improve the commnunicative ability and It is one of the teachers’... 详细信息

关键词： communicative ability professional skills cultivate

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The shape character and development stage of nebkha

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High Technology Letters 2009年第4期15卷 440-445页

作者：武胜利 college of Geography Science and tourism Xinjiang Normal University

Based on statistical analysis on morphological data of nebkhas surveyed in the Hotan River Basin,Xinjiang, the changing regularity and characters of nebkhas’ morphology in different development stageshave been discussed. Results indicate that there exist better correlation among length, width and altitudeof all kinds of nebkhas, but there are certain various shape characters in different nebkhas and the sametype of nebkhas in differential development stages. On account of analysis on mathematical imitation ofnebkhas’ shape characters, regional ecological environmental and aeolian characters, the development ofthe nebkha can be divided into a growing stage, a stabilizing stage and a declining stage.

关键词： nebkha shape character growth stage Hotan River Basin

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