沙漠化过程中四个共有种的生长和抗氧化系统酶类变化-应用生态学报.PDF

2004 12 15 12 CHI NESE JO U RNAL OF A PPL IED ECOL OGY , Dec. 2004 , 15( 12) %226 1~ 2266 * 1, 2 1* * 朱志梅 杨 持 ( 1 , 0 1002 1; 2 , 710069) 4 . , , , , ( P 005) . , 5719 % , 250% 622% . . SODPOD , . ( CAT ) , ( P 005) ; CAT ( P ! 00 1) . , 3 , CAT . ∀ # , ( P ! 005) . , 4 , , . 100 1- 9332( 2004) 12- 2261- 06 Q94811 A Changes of fourcommon plantpopulations growthand their antioxidativeenzymaticsystem in desertification 1, 2 1 1 process.ZHU Zh me , Y ANG Ch ( Ecology and Env ironment Science Dep artment of Inner Mongolia Uni versity, Huhhot 0 1002 1, China; 2 orthwest University , Xi∃an 7 10069, China) .Chin. J. App l. Ecol . , 2004 , 15( 12) : 226 1~ 2266. T h s paper stud ed the changes of the growt h and antox dat ve enzymat c system of four co mmon plant popula t ons dur ng the desert f cat on process of sandy g rassland. T he r esults sho w ed that n the process of desert f ca t on , the nd v dual he g ht and dens ty and the dens ty percentage of the populat ons all had a decr eas ng trend . T he gr owth of Melilotoides ruthenica w as more v gorous before mo derate desert f cat on ( M D ) stage, but re str cted after that . In M D stage, the gr owth of Leymus chinensis w as heav ly restr cted, and ts nd v dual he ght , dens ty and dens ty per centage accounted for 5719% , 250 % and 622% of those n or g nal vegetat on ( OV ) stage, respect vely . T he nd v dual he ght and dens ty of