The influence of land use and land cover on ecological environment is a focus of global change research. The paper chooses an industrial city-Shuicheng in Guizhou Province-as a study area because the karst water quali...The influence of land use and land cover on ecological environment is a focus of global change research. The paper chooses an industrial city-Shuicheng in Guizhou Province-as a study area because the karst water quality around the city is deteriorating with land use and land cover change. The natural susceptibility of karst water system is an important factor leading to karst water pollution. But land use and land cover change is also a main factor according to the chemical analysis of karst water quality and land use change. So it is a good way to protect karst water through rational planning and managing of land use and land cover.展开更多
Objective To investigate ethnic belonging,family economic status,staple food,dental fluorosis and urinary fluoride level of primary school students in Douqing Minority(Miao and Yi)Village,where is a severe area of coa...Objective To investigate ethnic belonging,family economic status,staple food,dental fluorosis and urinary fluoride level of primary school students in Douqing Minority(Miao and Yi)Village,where is a severe area of coal-burning type of endemic fluorosis,in order to provide a base for diminishing the disease in ethnic minori-展开更多
文摘The influence of land use and land cover on ecological environment is a focus of global change research. The paper chooses an industrial city-Shuicheng in Guizhou Province-as a study area because the karst water quality around the city is deteriorating with land use and land cover change. The natural susceptibility of karst water system is an important factor leading to karst water pollution. But land use and land cover change is also a main factor according to the chemical analysis of karst water quality and land use change. So it is a good way to protect karst water through rational planning and managing of land use and land cover.
文摘Objective To investigate ethnic belonging,family economic status,staple food,dental fluorosis and urinary fluoride level of primary school students in Douqing Minority(Miao and Yi)Village,where is a severe area of coal-burning type of endemic fluorosis,in order to provide a base for diminishing the disease in ethnic minori-