This paper introduced the application of the WebGIS and virtual reality technology in the tourism industry and analyzed the existing problems in the tourism information system.Taking Daqing Oil Field Scenic Sport as a...This paper introduced the application of the WebGIS and virtual reality technology in the tourism industry and analyzed the existing problems in the tourism information system.Taking Daqing Oil Field Scenic Sport as an example,it introduced a method of constructing the virtual simulation platform for tourism based on the combination of WebGIS and virtual reality technology.Through the virtual simulation platform of Daqing Tourism Scenic Spot,it verified the design idea,methods,and technical feasibility of the virtual tourism system,and built a specific,feasible,and practical virtual simulation platform for tourism.It showed the bright prospects of virtual tourism development based on WebGIS and virtual reality technology.展开更多
Seasonal and microhabitat variations of chemical constituents of foliar organic carbon （C）, total nitrogen （N）, total phosphorus （P）, and total potassium （K）, in Populus euphratica growing in desert riparian f...Seasonal and microhabitat variations of chemical constituents of foliar organic carbon （C）, total nitrogen （N）, total phosphorus （P）, and total potassium （K）, in Populus euphratica growing in desert riparian forests in northwestern China and their correlations were studied. Results show that ranges of C, N, P and K contents in the leaves ofP. euphratica were 39.08%-46.16%, 0.28%-2.81%, 0.05%-0.18% and 0.35%-2.03%, with means of 43.51%, 1.49%, 0.102% and 1.17%, respectively. The ratio of C/N, C/P and N/P changed from 16.26 to 146.61, from 258.08 to 908.67 and from 2.89 to 26.67; the mean was 37.24, 466.27 and 15.14, respectively. The mean N content was significantly lower than of deciduous trees in China, but the mean P content was nearly equivalent. The ratio of C/N was remarkably higher than of global land plants. The ratio of N/P indicated that growth ofP. euphratica was jointly limited by N and P nutrient deficiency. During the growth season, total trends of leaf C, N, P and K contents decreased. The max- imum appeared in May, and the minimum in September. Among microhabitats, C, N and K contents gradually increased from ri- parian lowland, flatland, sandpile, Gobi and dune, but C/N ratio was opposite, and P content was not apparent. Foliar C content was extremely, significantly and positively correlated with N and K contents, respectively. The relationships of N-K and P-K were both significantly positive.展开更多
基金Supported by Student's Platform for Innovation and Entrepreneurship Training Program "Development of Campus Precise Navigation System Based on Mobile Terminal"(201610223065)Heilongjiang Provincial Level and Postgraduate Education Reform Research Project "Research on the Integration of Production,Study and Practice Training Mode of Agricultural Information Professional Master"(JGXM_HLJ_2014094)Heilongjiang Provincial Level and Postgraduate Education Teaching Reform Project "Training Model of Practical and Innovative Agricultural Information Professional Master"(JGXM_HLJ_2016126)
文摘This paper introduced the application of the WebGIS and virtual reality technology in the tourism industry and analyzed the existing problems in the tourism information system.Taking Daqing Oil Field Scenic Sport as an example,it introduced a method of constructing the virtual simulation platform for tourism based on the combination of WebGIS and virtual reality technology.Through the virtual simulation platform of Daqing Tourism Scenic Spot,it verified the design idea,methods,and technical feasibility of the virtual tourism system,and built a specific,feasible,and practical virtual simulation platform for tourism.It showed the bright prospects of virtual tourism development based on WebGIS and virtual reality technology.
基金supported by the National Natural Science Foundation (40861026,40801001)Major project of the National Natural Science Foundation (91025024)+1 种基金Science and Technology Department Project of Qinghai Province(2010-Z-706,2011-Z-743)the Western Light Project of Chinese Academy of Sciences (2009-14)
文摘Seasonal and microhabitat variations of chemical constituents of foliar organic carbon （C）, total nitrogen （N）, total phosphorus （P）, and total potassium （K）, in Populus euphratica growing in desert riparian forests in northwestern China and their correlations were studied. Results show that ranges of C, N, P and K contents in the leaves ofP. euphratica were 39.08%-46.16%, 0.28%-2.81%, 0.05%-0.18% and 0.35%-2.03%, with means of 43.51%, 1.49%, 0.102% and 1.17%, respectively. The ratio of C/N, C/P and N/P changed from 16.26 to 146.61, from 258.08 to 908.67 and from 2.89 to 26.67; the mean was 37.24, 466.27 and 15.14, respectively. The mean N content was significantly lower than of deciduous trees in China, but the mean P content was nearly equivalent. The ratio of C/N was remarkably higher than of global land plants. The ratio of N/P indicated that growth ofP. euphratica was jointly limited by N and P nutrient deficiency. During the growth season, total trends of leaf C, N, P and K contents decreased. The max- imum appeared in May, and the minimum in September. Among microhabitats, C, N and K contents gradually increased from ri- parian lowland, flatland, sandpile, Gobi and dune, but C/N ratio was opposite, and P content was not apparent. Foliar C content was extremely, significantly and positively correlated with N and K contents, respectively. The relationships of N-K and P-K were both significantly positive.
