简介：InChina’sthreenorthernregionsoftheNorthwest,NorthandNortheast(3Ns),thereare1.33millionsqkmofdesertandsandland,forminga5,000-km-longwind-sandbelt.In1978,theChinesegovernmentdecidedtobuildthe"3Ns"shelterbeltnetwork.Theprojectcovers13provinces,autonomousregionsandcitiesincludingXinjiang,Qinghai,Gansu,Ningxia,Shaanxi,InnerMongolia,Shanxi,Hebei,Beijing,Tianjin,Liaoning,JilinandHeilongjiang,eoveringanareaof4.06millionsqkm,42％ofthecountry’stotalland.Itplanstocompletetheprojectin73years,inthreephases:thefirstphaseis

简介：Windvelocityreductionofcoastalshelterbeltsystemwasmonitoredfor1monthin3weatherstationsinNanhui,Shanghai,andthebenefitsofshelterbeltsystemandtrunkshelterbeltforestwerecomparedinthispaper.Theresultsshowedthewindvelocityatthefirstweatherstation(W1),whichlocatedinfrontoftrunkshelterbeltforestbytheseaside,wasthebiggest,withtheaverageof9.36m/s;thewindvelocityatthesecondweatherstation(W2)waslowerthanthatatW1,withtherangeof0to18.2m/sand...

简介：目前，关于防风林的保护的效果的大多数研究根据森林带和网络的二规模。与关于全球环境变化的进一步的研究，然而，更多的注意对防风林的地区性的气候效果被给予。在现在的学习，我们由使用陆地表面温度(LST)在地区性的规模分析了防风林的温度效果从在在到在2008的10月的从三月的中国的吉林省的Yushu，Nongan，Dehui，和Fuyu的中等决定成像分光辐射函数(MODIS)的数据。结果证明防风林能作为与没有防风林地区相比增加保护的农田的土壤温度，与0.57的增长吗？

简介：Inaspectofthescaleofworks,theThreeNorthShelterbeltProgramisuptonowthemostmagnificentprojectofforestryecologicalconstructionintheworld.Attheendof2000,the1st,2nd,and3rdperiodsofconstructioninthe1stphase(1978-2000)hadbeencompleted.Basedonfuzzycomprehensiveevaluationmethod,thepaperisabouttheresearchesonpost-evaluationinthe1stphaseaimsoftheThreeNorthShelterbeltProgram.Theconclusionobtainedisthattheaimsarepartlysuccessful.