常見例句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，對測線調(diào)查樣本進行密度推定。Feasibility, validity and other problems of line transect survey method in shallow fresh water lake were also discussed. 探討了截線抽樣法用于淺水型淡水湖泊調(diào)查的可行性和有效性以及要注意的問題。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種密度推定法用于計算機模擬產(chǎn)生測線調(diào)查的距離數(shù)據(jù)，由統(tǒng)計量RRMSE和RB對推定值進行評價，來驗證其優(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)樣線調(diào)查法計算,估計東部地區(qū)的藏野驢約8309只,藏羚羊1603只,野牦牛985只,藏原羚214只。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. 摘要采用樣線法對人工種植羊柴進行研究，調(diào)查其生長狀況，并通過研究其物種多樣性來分析羊柴對流沙的固定效果。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. 采用樣線法對人工種植羊柴進行研究,調(diào)查其生長狀況,并通過研究其物種多樣性來分析羊柴對流沙的固定效果。 返回 line-transect