摘要
通过聚类分析和主成分分析 ,将关中北部塬区林地啮齿动物群落分为 3种类型 .退耕林地啮齿动物群落初期保持了原农田群落的特点 ,1a后种群密度有一个上升的过程 ,群落密度增高 ,并逐渐向周围林地扩散 .从灌木疏林 农林交错分布的荒坡林地 农田 退耕林地啮齿动物群落呈现规律演替 ,表现为密度依次增加 ,危害逐渐加重 .灌木疏林地啮齿动物群落类型与荒坡林地啮齿动物群落类型的相似度较高 ,与退耕林地啮齿动物群落类型的相似度麟游群落的相似度低 ,而永寿的相似度高 ;荒坡林地啮齿动物群落类型与退耕林地啮齿动物群落类型的相似度较高 .农林交错分布的荒坡林地啮齿动物群落是退耕林地向灌木疏林地群落的过渡群落 ,种类相对较少 ,密度相对较大 ,属灌木疏林地的次生啮齿动物群落 .
Pass clustering analysis and principal components, the rodent communities could be divided into 3 types in the Guanzhong northern plateau′s forest-area. In reuse farmland for woodland,the initial rodent community keep the characteristics of the original farmland community, after forestation a year, the rodent density has a the ascension′s process, at the same time gradually face the around woodland to transfer. From the scrub open forest-desolate slope-farmland-reuse farmland, the rodent community occurrence a sere, namely: the density one by one in order rise, impaired to gradually aggravate. Alike degree of rodent community in scrub open forest and rodent community in desolate slope is higher, with the community alike degree, the rodent community in linyou reuse farmland is low, but the community in yongshou is high; Alike degree that the desolate slope and the reuse farmland is higher. The rodent community in desolate slope is a transition community that reuse farmland direction scrub open forest, the species less, density is big, belong to the secondary community of scrub open forest.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第S2期177-183,共7页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家"十五"科技攻关项目 ( 2 0 0 1BA50 9B0 7- 2 - 0 2 )
关键词
啮齿动物
群落演替
群落多样性
Rodent
Community succession
Community diversity
