Experimental population ecology of carcelia matsukarehae shima diptera : tachinidae 松毛蟲狹頰寄蠅實(shí)驗(yàn)種群生態(tài)學(xué)研究
Study on population ecology of small mammal in an abandoned landfill using mark and recapture method 用標(biāo)志重捕法研究廢棄地小型獸類群落物種組成及種群生態(tài)學(xué)特征
Genecology the study of ecological genetics , or population genetics in relation to environment 遺傳生態(tài)學(xué)(種群生態(tài)學(xué)) :是一門研究生態(tài)遺傳或種群遺傳與環(huán)境關(guān)系的學(xué)科。
Logistic model is one of core theory in population ecology . it almost the only model to describle population growth for about one hundred Logistic模型是種群生態(tài)學(xué)的核心理論之一。 100多年來(lái),它幾乎是描述種群s型增長(zhǎng)的唯一數(shù)學(xué)模型。
Dezhi li , s . takahashi ( 2003 ) particularities of clonal plant species induced by physiological integration . grassland science . grassland science 49 ( 4 ) . japan 李德志等( 2003 )植物種群生態(tài)學(xué)與遺傳學(xué)分支的成功整合生態(tài)學(xué)雜志22 ( 6 ) .科學(xué)出版社
Nevertheless , the logistic equation was not far from precise , but after a hunderd years , it was still an important and widely applied model in ecology 盡管logistic模型還遠(yuǎn)不夠精細(xì),但是直到一百多年后的今天,它仍是種群生態(tài)學(xué)中的一個(gè)重要的而且被廣泛應(yīng)用的模型
Form . taxus chinensis var . mairei is protecting plant in the first class , which is a precious and endangering plant in china in this paper , the quantitative characterics of form . taxus chinensis vsr . mairei population including age structure , spatial distribution pattern , growth dynamics of tree basal area , niche characterics , fractal dimension and competition between specises were studied using methods of mathematics ecology from the angle of population ecology of form . taxus chinensis var . mairei , then the prent state and the endangering causes were analysed . this research offers gist to protecting and enlarging the crude resourse of form . taxus chinensis vsr . mairei population , afforesting plantation and sustainable utilize for us 本文從南方紅豆杉種群生態(tài)學(xué)的角度、主要應(yīng)用數(shù)學(xué)生態(tài)學(xué)的方法探討南方紅豆杉種群的數(shù)量特征,包括南方紅豆杉種群年齡結(jié)構(gòu)、種群空間格局(探討分布格局動(dòng)態(tài)規(guī)律與生境相互關(guān)系) 、不同立地條件下種群優(yōu)勢(shì)度增長(zhǎng)趨勢(shì)、生態(tài)位寬度、生態(tài)位相似比例、生態(tài)位重疊、空間占據(jù)能力及種間競(jìng)爭(zhēng)等,分析其目前現(xiàn)狀及瀕危原因,期望為南方紅豆杉野生資源的保護(hù)和擴(kuò)大、營(yíng)造人工林及可持續(xù)利用提供理論基礎(chǔ),也為瀕危植物種群生態(tài)學(xué)的研究提供參考。
In jinyun , beibei , chongqing . with the helps of various statistical analyses we studied the composition , species diversity and liaison between species in the communities in which s . tsinyunensis distributed , as well as the niche , distribution pattern , modular structure of the populations . the result shows as folio wings : there are 78 species of 70 genera in 47 families of higher plants in the communities in which s . tsinyunensis distributed 本文運(yùn)用植物群落學(xué)、種群生態(tài)學(xué)及多種數(shù)量統(tǒng)計(jì)分析方法,對(duì)縉云黃芩全分布區(qū)的群落組成、物種多樣性、物種間聯(lián)結(jié)性、種群生態(tài)位、種群分布格局及構(gòu)件種群進(jìn)行了研究,結(jié)果如下: 1 )縉云黃芩種群分布的群落中有高等植物78種,分屬47科70屬。
Of the species , . characters of ecology , reproductive biology , genetic diversity , population genetic structure , endangering mechanisms , and sampling strategy have been studied in view of conservation biology . the results may be summarized as follows : by field investigation , we found that the localities recorded for four specimens of d . versipellis and d . pleiantha had disappeared , and most of the present populations are located in protected subforests . the distributional range of d . versipellis has also been reduced greatly , evidently , the number of present populations has decreased , the resources are reduced sharply , and the species are clearly endangered 從保育生物學(xué)的角度,對(duì)八角蓮種群生態(tài)學(xué)和生物學(xué)特性、遺傳多樣性水平和遺傳結(jié)構(gòu)、瀕危機(jī)制及保育取樣策略進(jìn)行了研究,結(jié)果如下:通過野外調(diào)查發(fā)現(xiàn),原標(biāo)本記載的一些八角蓮和六角蓮種群已難以找到,該類群目前多分布于自然保護(hù)區(qū)外圍次生林地帶,分布范圍明顯縮小,現(xiàn)存群體的規(guī)模也明顯減少,資源量貧乏,物種處于瀕危狀況。