搜索结果: 1-3 共查到“地球科学总论 food”相关记录3条 . 查询时间(0.062 秒)
近年来,食物损失和浪费已成为一个全球性问题,引起了学术界、政府和公众的广泛关注。食物损失和浪费与粮食安全、食物安全、营养健康、资源环境以及经济社会等密切相关,被认为是全球食物系统可持续发展的重要阻碍。对于食物损失和浪费现状的定量刻画是分析其资源环境影响、制定减少目标以及制定减缓对策的重要基础。中国的餐桌食物浪费问题已引起了从政府高层到社会大众的高度关注,但迄今仍缺乏从整个食物供应链角度来全面核算中...
The effects of biomanipulation on the biogeochemistry,carbon isotopic composition and pelagic food web relations of a shallow lake
biomanipulation biogeochemistry carbon isotopic composition pelagic food web relations
2010/1/13
In this study we investigated the effects of experimental biomanipulation on community structure, ecosystem metabolism, carbon biogeochemistry and stable isotope composition of a shallow eutrophic lak...
How tight are the limits to land and water use?-Combined impacts of food demand and climate change
land water use Combined impacts food demand climate change
2010/1/25
In the coming decades, world agricultural systems will face serious transitions. Population growth, income and lifestyle changes will lead to considerable increases in food demand. Moreover, a rising ...