%0 Journal Article %T thestatusofterrestrialecosystemsinchina %A chen %A lingzhi %J 生物多样性 %D 1993 %X ?chinaisavastcountrywithcomplexgeographyandclimate.itcrossescold,temperateandtropicalzonesfromnorthtosouth.theplateausandhighmountainsoccupyever50%ofthelandsurface.meanwhile,sincethelatetertiary,mostregionshavenotbeenaffectedbyglaciation,thusthefaunaandfloraarecharacterizedbyhavingmanyendemicandrelicspecies.?therefore,itisconsideredinternationallythatchinaisoneofthemegadiversitycountriesintheworld,wherethenumberofspecise,aswhole,makesupaboutonetenthofthetotalspeciesintheworld.theecosystemstypesarcveryrich.therapidgrowthrateofpopulationandeconomicdevelopmentarethemaincauseforthethreatenednessofecosystems. %K ecosystem %K diversity %K forest %K steppe %K desert %U http://www.biodiversity-science.net/CN/abstract/abstract9720.shtml