摘要
Betula platyphylla and Populus davidiana forests of the forest\|steppe ecotone in northern Hebei and eastern Inner Mongolia are abundant in plants,which are,at least,35 families,95 genera and 117 species.The plant species decrease and a diversity reduces from east to west in the ecotone because of gradually low precipitation.β diversity index reaches peak at the different limits such as those between the ecotone and the forest,and the steppe,and between the forest meadow and the meadow steppe zone in the ecotone.The plant diversity is closely related to climate,the community organization and succession.
Betula platyphylla and Populus davidiana forests of the forest\|steppe ecotone in northern Hebei and eastern Inner Mongolia are abundant in plants,which are,at least,35 families,95 genera and 117 species.The plant species decrease and a diversity reduces from east to west in the ecotone because of gradually low precipitation.β diversity index reaches peak at the different limits such as those between the ecotone and the forest,and the steppe,and between the forest meadow and the meadow steppe zone in the ecotone.The plant diversity is closely related to climate,the community organization and succession.
出处
《林业科学》
CAS
CSCD
北大核心
2000年第z01期110-115,共6页
Scientia Silvae Sinicae
基金
国家自然科学基金!项目 ( 3 93 70 5 61)资助
关键词
植物多样性
白桦林
山杨林
森林-划原交错带
Plant diversity, Betula platyphylla and Populus davidiana forests, Forest\|steppe ecotone, China
