With regard to 4 water resources problems in China: floods and water logging disaster, water resources shortage, land erosion and ecological change and water resources pollution, the following countermeasures are put forward:to make ways for floods, to establish water saving society, to give full play of self rehabilitation ability of the nature, to develop green economy.
By bringing the ecological factor into analysis frame of economics, ecological economics studies the relation ofecological factor and the economic factor, to seek benign balance between economic activity and ecological change and also theeconomic sustainable development.
By bringing the ecological factor into analysis frame of economics, ecological economics studies the relation of ecological factor and the economic factor, to seek benign balance between economic activity and ecological change and also the economic sustainable development.
Ecological changes of filth fly larvae caused by changes of rural policies, econmics, envir'cnental conditions and management of livestock and poultry in rural areas of Shanxi Province during 1980-1985 were discussed in this paper.
The article discusses its natural ecology condition and ecology change of developing oasis irrigation agriculture and explains eclogy change causing eology problem of land desertification for large scope characteristics.
This research describes the influence of acidic stress on wheat delayed ultraweak bioluminescence (DUB). Wheat seedling was selected to investigate correlation among the DUB change, ecology change and content changes of such endogenous physiological chemicals as chlorophyll a, chlorophyll b , carotenoid and malonyldialdehyde in wheat leaves.
After investigating the present ecologic situation of the whole mangrove forest belt,the ecologic environment,the flora compose,the population distribution,the structure and physiognomy of community,community type,ecological series,succession of community,biomass,and ecologic change of mongrove and its cause were discussed in this paper. And the importance and urgency for protecting the whole of mangrove wetland ecosystem were expound.
It is suggested that such genetic and ecological changes in insects may be a more common mechanism than previously thought in initiating and sustaining pest outbreaks, and that conventional pest management methods may enhance that effect.
We discuss the possible mechanisms inducing the morph differentiation in M.?digitata, as well as the physiological, behavioral, and ecological changes facing each morph.
Ecological changes will feed back on the choices of both households and business locations, and availability of land and resources.
Sensitivity of the results to projected ecological changes, eutrophic marsh valuation, natural marsh valuation, and future values as represented in the discount rate, was examined.
Br., a subantarctic endemic cruciferous species, is endangered in its natural sites by several ecological changes.