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- W2375672259 abstract "Protecting cities and towns from blown-sand disasters(PCTBD)is a new scientific field promoted by national demand.Its own theoretical may be established gradually based on Blown Sand Physics,Sand Control Engineering,Restoration Ecology,and theory as well as technology related to desertification control and sustainable development,and supported by engineering practices and theoretical research of preventing blown-sand disasters.The theoretical frame of PCTBD preliminarily summarized in this paper contains four branch fields,fourteen main research contents and nine supporting disciplines.The branch fields include cause of blown-sand disasters and regional characteristics of wind-sand flow field,spatial optimization of land use in peripheral areas of towns,scheme optimization of preventing blown-sand disaster engineering,efficiency evaluation and prediction of the engineering.Technical includes eight branch technology fields and one general goal of optimized model of PCTBD.Except for that of Qinghai-Tibet Plateau,the the technical systems of PCTBD all show ring-structure characteristic and they all have green landscape zone as the first ring closed to urban district.For cities and towns located on the fringe of desertified land in semi-humid areas,the second ring is high-efficiency agriculture-stock production zone,the third ring is eco-conserving division,and the fourth ring is closure of nature reserve.As for cities and towns in desertified land in semi-humid areas,the second ring is agriculture-stock patches dispersal in sand dunes forsook zone,the third ring is forsook protection zone.For cities and towns in desertified land in semi-arid areas,the second ring is sand dunes forsook and agriculture-stock production zone divided into two sub-rings of suburban facility agriculture ring and sand dunes forsook as well as independent production ring of household farm,the third ring is sand dune forsook protection zone.As for cities and towns in desertified land in arid areas,the second ring is irrigation agriculture zone,the third ring is peripheral protective zone,the fourth ring is forsook protection zone.As for cities and towns in intermountain basins on Qinghai-Tibet Plateau,the preventing blown-sand disaster engineering usually adopt scheme of shelter belt,artificial grassland and irrigation system closed to urban district,blown-sand barrier,shelter belt,artificial grassland and irrigation system in peripheral area,shelter belt,grassland improvement and forsook system in further peripheral area.As for cities and towns in valleys on Qinghai-Tibet Plateau,scheme of preventing blown-sand disaster engineering is arranged in macro-scale according to river course trend,locally making full consideration of organic integration of blown-sand control,river course regulation,soil and water conservation,geological hazard governance,in detail choosing blown-sand control techniques according to sand-dust resource types and distribution geomorphic locations." @default.
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- W2375672259 date "2010-01-01" @default.
- W2375672259 modified "2023-09-25" @default.
- W2375672259 title "Theory Frame and Technology Model of Protecting Cities and Towns from Blown-sand Disasters" @default.
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