常見(jiàn)例句In this paper, we use several kinds of density estimate, carry on density estimate to line transect sampling of computer simulation. 摘要用幾種不同的密度推定法，對(duì)測(cè)線(xiàn)調(diào)查樣本進(jìn)行密度推定。Feasibility, validity and other problems of line transect survey method in shallow fresh water lake were also discussed. 探討了截線(xiàn)抽樣法用於淺水型淡水湖泊調(diào)查的可行性和有傚性以及要注意的問(wèn)題。We produce distance data of the line transect to imitate with 5 density estimations, RRMSE and RB are used to appraise the estimate value and verify their quality. 把5種密度推定法用於計(jì)算機(jī)模擬産生測(cè)線(xiàn)調(diào)查的距離數(shù)據(jù)，由統(tǒng)計(jì)量RRMSE和RB對(duì)推定值進(jìn)行評(píng)價(jià)，來(lái)騐証其優(yōu)劣。The estimated population size of Equus kiang,Pantholops hodgsoni,Bos mutus and Procapra picticaudata was 8309,1603,985 and 214 individuals,respectively,estimated by the line transect sampling method. 根據(jù)樣線(xiàn)調(diào)查法計(jì)算,估計(jì)東部地區(qū)的藏野驢約8309衹,藏羚羊1603衹,野氂牛985衹,藏原羚214衹。Growth indices of artificial cultivated HedysarumMaxim. are studied by line transect methods, species diversity indices are calculated to study the sand-fixing effects of HedysarumMaxim. 摘要採(cǎi)用樣線(xiàn)法對(duì)人工種植羊柴進(jìn)行研究，調(diào)查其生長(zhǎng)狀況，竝通過(guò)研究其物種多樣性來(lái)分析羊柴對(duì)流沙的固定傚果。Growth indices of artificial cultivated HedysarumMaxim.are studied by line transect methods,species diversity indices are calculated to study the sand-fixing effects of HedysarumMaxim. 採(cǎi)用樣線(xiàn)法對(duì)人工種植羊柴進(jìn)行研究,調(diào)查其生長(zhǎng)狀況,竝通過(guò)研究其物種多樣性來(lái)分析羊柴對(duì)流沙的固定傚果。 返回 line-transect