Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geoc...Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geochemical characters of selenium both in surface layer soil and in green Chinese onions are analyzed,and the relationship between the selenium in plant and soil is discussed.The results show that soil in Zhangqiu is rich in selenium,and it is suitable to develop the selenium-rich green Chinese onion products.展开更多
The resultant climate change on sustainable food supply has greatly affected agricultural production by the level of great volumes of gasses emitted into the atmosphere by human activities. The human factors that emit...The resultant climate change on sustainable food supply has greatly affected agricultural production by the level of great volumes of gasses emitted into the atmosphere by human activities. The human factors that emit large amount of green house gases include industrialization, burning of fossil fuel and gas flaring. Increase in air temperature and consequent increase in the rates of evaporation also affect the level of food supply. Data for this study were collected from primary and secondary sources. Primary source were collected through field investigation and structured questionnaire. A total of 450 questionnaires were administered. Results revealed that varieties of crops ranging from tree crops to cereals were cultivated within the study area. The effect of climate change on food supply has resulted into change in crop yields, change in rainfall pattern, soil loss and has greatly affected planting period and harvesting. The study therefore recommended awareness campaigns on the causes and consequences of global climate change on food production, environmental education and afforestation campaign programmes on sustainable food supply and environmental safety must be intensified.展开更多
Biodiversity is one of the important aspects of Agricultural Heritage Systems and some consumers might be wiling to pay a higher price for agricultural commodities that are produced in a way that conserves biodiversit...Biodiversity is one of the important aspects of Agricultural Heritage Systems and some consumers might be wiling to pay a higher price for agricultural commodities that are produced in a way that conserves biodiversity. If so, whether can market-oriented policies to promote adding the value of biodiversity to agricultural products be used to conserve biodiversity？ Our study focuses on consumer reactions to “life brand” product, which is labeled as “Stork-raising rice” in Toyooka City in Japan, produced environmentally-friendly agricultural practices for the revival of extinct stork. Using data of choice experiment and Latent Segment model, we analyzed whether these agricultural products can achieve higher market prices. The results showed that consumer, who had knowledge that stork populations had been revived because of changes in agricultural practice, are willing to buy expensive rice that improve biodiversity conservation for stork. However, consumers who bought this rice because of a preference for reduced-pesticide or organic food, without knowledge of revived stork history, were not willing to do so. The majority of agricultural product consumers in Japan are this type of consumer. Thus, the promotion of biodiversity conservation by only “life brand” agricultural products is not enough. Therefore, government support and public activities are indispensable for biodiversity conservation.展开更多
基金Supported by China Geological Survey Bureau Project(1212010310306)~~
文摘Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geochemical characters of selenium both in surface layer soil and in green Chinese onions are analyzed,and the relationship between the selenium in plant and soil is discussed.The results show that soil in Zhangqiu is rich in selenium,and it is suitable to develop the selenium-rich green Chinese onion products.
文摘The resultant climate change on sustainable food supply has greatly affected agricultural production by the level of great volumes of gasses emitted into the atmosphere by human activities. The human factors that emit large amount of green house gases include industrialization, burning of fossil fuel and gas flaring. Increase in air temperature and consequent increase in the rates of evaporation also affect the level of food supply. Data for this study were collected from primary and secondary sources. Primary source were collected through field investigation and structured questionnaire. A total of 450 questionnaires were administered. Results revealed that varieties of crops ranging from tree crops to cereals were cultivated within the study area. The effect of climate change on food supply has resulted into change in crop yields, change in rainfall pattern, soil loss and has greatly affected planting period and harvesting. The study therefore recommended awareness campaigns on the causes and consequences of global climate change on food production, environmental education and afforestation campaign programmes on sustainable food supply and environmental safety must be intensified.
文摘Biodiversity is one of the important aspects of Agricultural Heritage Systems and some consumers might be wiling to pay a higher price for agricultural commodities that are produced in a way that conserves biodiversity. If so, whether can market-oriented policies to promote adding the value of biodiversity to agricultural products be used to conserve biodiversity？ Our study focuses on consumer reactions to “life brand” product, which is labeled as “Stork-raising rice” in Toyooka City in Japan, produced environmentally-friendly agricultural practices for the revival of extinct stork. Using data of choice experiment and Latent Segment model, we analyzed whether these agricultural products can achieve higher market prices. The results showed that consumer, who had knowledge that stork populations had been revived because of changes in agricultural practice, are willing to buy expensive rice that improve biodiversity conservation for stork. However, consumers who bought this rice because of a preference for reduced-pesticide or organic food, without knowledge of revived stork history, were not willing to do so. The majority of agricultural product consumers in Japan are this type of consumer. Thus, the promotion of biodiversity conservation by only “life brand” agricultural products is not enough. Therefore, government support and public activities are indispensable for biodiversity conservation.
