植物种群空间分布的点格局分析植物种群空间分布的点格局分析.pdfVIP

1998, 22( 4) 344 349 Acta Phy toecologica Sini ca 张金屯 ( , 030006) , , , , 3, 3: 1) , , ; 2) , ; 3) , , 3, , 3 ANALYSIS OF SPATIAL POINT PATTERN FOR PLANT SPECIES Zhang Jintun ( Institute of Loess Plateau, Shanx i University , Taiy uan030006) AbstractT he dist ribu tion patt ern of p ant species in communit ies is c ose y re at ed t o s pat ia sca e. Q uadrat s amp ing an d t radit iona met hods on y can ana ys e patt ern in one sca e. T h ere- fore, it is diff icu t t o ref ect species spat ia characterist ics comp ete y , n o matt er h ow rat ion a for qu adrat size. Point patt ern ana ysis , bas ed on species sp at ia mapped point s , is introduced in t his paper . T hree advantages over t radit ion a t echniques, emerged in t he an a ysis of t hree domin ant s pecies in oak f orest s in C int on county M ichigan , U SA . First y , it can ana ys e species s pat ia patt ern s an d interspecif ic ass ociat ions at any s ca e. Second y , it s resu t s are more consist ent to th e rea it y , especia y for commu nit y stru ct ure. T hird y , it is more suit- ab e for st udy of re at ion ships betw een species pat tern and t ime sca e. T h e t hree species ana - ysed in th is paper have obvious c umpin g feat ure, w h i e t hey vary w it h s ca es. Key wordsPop u at ion , Spatia dist rib ut ion pat tern, Species ass ociation, Point p at tern, Oak forest ( - , 1983; , 1995) , Greig Smit h 3, , ( Greig -Sm ith , 1983; St ew art Rose, 1990) , 1996-11-11, 1997-06-20 96-004-05-03 4 : 3