For natural resource science, resource productivity studying is an important subject. But researches on tourism resource productivity are limited. The most significant influencing factor on tourism resource productivi...For natural resource science, resource productivity studying is an important subject. But researches on tourism resource productivity are limited. The most significant influencing factor on tourism resource productivity is the potential market scale of tourist locations, and second most important influencing factor is the resource endowment. Regional urban population is significantly correlated with region tourist numbers, being the decisive factor of region potential tour market scale. In tourism development, the dual model should be adopted: on one hand to enhance tour spot attractiveness, on the other hand to cultivate the potential market by improving urbanization level and other means. In the situation of tourism development fever spreading, the dual model for improving tourism productivity helps to avoid the "Great Leap Forward" which means that too rapid tourism construction divorces from actual market demand.展开更多
In big countries, nutrition profiles and foodstuffs chemical contamination may differ significantly between different regions and even between areas within a region. Thus one should assess toxic exposure through food ...In big countries, nutrition profiles and foodstuffs chemical contamination may differ significantly between different regions and even between areas within a region. Thus one should assess toxic exposure through food on not only national but also local level. We have developed and distributed a personal questionnaire for estimating average daily consumption of 44 types of foodstuffs, and for 12 of them-the percentage contribution of the main sources of supply. Depending on data analysis results, we choose the most important foodstuffs for determining their chemical contamination. We tested this approach in 7 industrial towns and found differences among them, as well as among children and adults, with regard to toxic exposure through food. People with a relatively high income consume more milk, cheese, meat, fish, poultry and fruit but less bread and potatoes than those with medium or low income. About 80% of consumed potatoes are grown locally and thus depend on each area＇s contamination. Although daily intakes of toxicants do not exceed WHO tolerable levels, their contribution to the total environmentally dependent dose is important. The approach developed by us can be used in epidemiological and risk assessment studies when they are performed on regional or local level.展开更多
基金Phase Achievement of the Project "National Scientific-basic Special Fund in2008:Scientific Investigation in the Middlelower Reaches of the Lancang River and in Big Shangri-La Areas(Grant No.2008FY110300)"
文摘For natural resource science, resource productivity studying is an important subject. But researches on tourism resource productivity are limited. The most significant influencing factor on tourism resource productivity is the potential market scale of tourist locations, and second most important influencing factor is the resource endowment. Regional urban population is significantly correlated with region tourist numbers, being the decisive factor of region potential tour market scale. In tourism development, the dual model should be adopted: on one hand to enhance tour spot attractiveness, on the other hand to cultivate the potential market by improving urbanization level and other means. In the situation of tourism development fever spreading, the dual model for improving tourism productivity helps to avoid the "Great Leap Forward" which means that too rapid tourism construction divorces from actual market demand.
文摘In big countries, nutrition profiles and foodstuffs chemical contamination may differ significantly between different regions and even between areas within a region. Thus one should assess toxic exposure through food on not only national but also local level. We have developed and distributed a personal questionnaire for estimating average daily consumption of 44 types of foodstuffs, and for 12 of them-the percentage contribution of the main sources of supply. Depending on data analysis results, we choose the most important foodstuffs for determining their chemical contamination. We tested this approach in 7 industrial towns and found differences among them, as well as among children and adults, with regard to toxic exposure through food. People with a relatively high income consume more milk, cheese, meat, fish, poultry and fruit but less bread and potatoes than those with medium or low income. About 80% of consumed potatoes are grown locally and thus depend on each area＇s contamination. Although daily intakes of toxicants do not exceed WHO tolerable levels, their contribution to the total environmentally dependent dose is important. The approach developed by us can be used in epidemiological and risk assessment studies when they are performed on regional or local level.
