土地荒漠化对生态系统服务价值的影响_王树力.pdfVIP

2008 10 Vol.6 　No.5 　6(5):50-56 Science of Soil and Wate Conse vation Oct.2008 王树力, 杨广巍, 周延阳 (, 150040, ) 　, , 、, 。 :1), 76.66%, , , ;、 、, ; 、、、、 , 。2)79.9241 /a, 、 、 , 16.639 4 、16.397 4 、15.392 7 13.658 9 /a, , 23.47%, , 0.041 1 /a 2.63%; , 17.867 7 /a, , 20.65%, , 2.313 9 /a 13.34 %。 　;; Effects of land desertification on ecosystem service value Wang Shuli, Yang Guangwei, Zhou Yanyang (Fo est y A cademy, No the n East Fo est y Unive sity, 150040,Ha bin,China) Abstract 　By using the method of combining the investigation and emote sensing date, int oducing the effecting index of dese tification deg ee on ecosystem se vice value, based on the a ea, dese tification deg ee and dist ibution patte n of the diffe ent land using types, the effects of land dese tification on ecosystem se vice value we e studied .It is shown that:1)Dese tification land a ea ate within dese tification egion is 76.66%. The dese tification a ea ate of g assland is the biggest, the dese tification deg ee of g assland and unused land a e also the biggest, but the dese tification a ea ate and dese tification deg ee of fo est land and cultivating land a e smalle than that of g assland and unused land.Light and middle deg ee dese tification land mainly dist ibute on cultivating land, fo est land and most pa t of g assland.Heavy deg ee and ext a heavy deg ee dese tification land mainly dist ibute on unused land and few pa t of g assland .The dese tification a ea ate and dese tification deg ee of Linxi county, Wengniute county, Right Balin county, Left Balin county, Aohan county and A luke qin county a e bigge and heavie