%0 Journal Article
%T Simplified dynamic models of grass field ecosystem<br>Simplified Dynamic Models of Grass Field Ecosystem
%A Zeng Qingcun
%A Zeng Xiaodong
%A Lu Peisheng
%A <br>Zeng Qingcun
%A Zeng Xiaodong
%A Lu Peisheng
%J 大气科学进展
%D 1994
%I 
%X Some simplified dynamic models of grass field ecosystem are developed and investigated. The maximum simplified one consists of two variables, living grass biomass and soil wetness. The analyses of such models show that there exists only desert regime without grasses if the precipitation p is less than a critical value pc; the grass biomass continuously depends on p if the interaction between grass biomass and the soil wetness is weak, but the strong interaction results in the bifurcation of grass biomass in the vicinity of pc: the grass biomass is rich as p > pc, but it becomes desertification as p
%K Dynamic model
%K Grass field ecosystem
%K Bifurcation<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=5434AFBF6CB6E7E8D67733B541F211C7&aid=DC0CD037544AD44D93ED5525C3C0F496&yid=3EBE383EEA0A6494&vid=708DD6B15D2464E8&iid=E158A972A605785F&sid=44FDB9366EDDFA2B&eid=A22854835F81B3F8&journal_id=0256-1530&journal_name=大气科学进展&referenced_num=0&reference_num=3