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- 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. 摘要采用样线法对人工种植羊柴进行研究,调查其生长状况,并通过研究其物种多样性来分析羊柴对流沙的固定效果。
- 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. 采用样线法对人工种植羊柴进行研究,调查其生长状况,并通过研究其物种多样性来分析羊柴对流沙的固定效果。
- Line transect methods in avian census 样线法在鸟类数量调查中的运用
- In the Picea schrenkiana stand, micro habitat variables affecting regeneration of one-year seedlings and survival of two year seedlings were studied by using line transects method. 摘要采用典型样线调查法对影响天山云杉一年生幼苗更新和两年生幼苗存活的微生境变量进行分析。
- line transect method 样线法
- By using line transect method we investigated 18 line samples and found 30 Argali (Ovis ammon) in the hunting field of Baicheng in 1997. The result are as follows. The Population densities are from 0.160 9/km+2 to 0.47/km+2; 采用实体观测垂距法对阿克苏地区拜城县国际猎场内的盘羊种群数量进行了调查 ;共计调查 1 8条样线 ;发现盘羊 30头 ;其密度 0 .;47± 0
- Feasibility, validity and other problems of line transect survey method in shallow fresh water lake were also discussed. 探讨了截线抽样法用于浅水型淡水湖泊调查的可行性和有效性以及要注意的问题。
- 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. 根据样线调查法计算,估计东部地区的藏野驴约8309只,藏羚羊1603只,野牦牛985只,藏原羚214只。
- In this paper, we use several kinds of density estimate, carry on density estimate to line transect sampling of computer simulation. 摘要用几种不同的密度推定法,对测线调查样本进行密度推定。
- 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种密度推定法用于计算机模拟产生测线调查的距离数据,由统计量RRMSE和RB对推定值进行评价,来验证其优劣。
- Forty one burrows were recorded in 23 line transects which were established randomly in the Reserve, passing 4 different forest types of this Reserve. 最不喜爱将洞口设置在裸露、隐蔽程度差的生境,强力避免洞口向北。
- ON ESTIMATING WILDLIFE DENSITIES FROM LINE TRANSECT DATA 关于使用样线法估计种群密度
- Conclusions The direct transection method of pancreas resection is a simple and safe method to increase resection rate and prolong survival time for patients with advanced pancreatic carcinoma. 结论直接切断胰腺的方法简单、安全,可以显著提高进展期胰头癌手术切除率,延长患者生存时间。
- The vertical line meets the horizontal one here. 垂直线与水平线在此相交。
- One line cuts another at right angles. 一条线与另一条线成直角相交。
- The printers have missed out a whole line here. 排版工人在这里漏掉了一整行。
- Participation in tender is in our line of business. 参加投标属于我们的业务范围。
- A long line of car is unable to pass that road hog. 一长串的车子无法超越那个挡道的汽车驾驶。
- The sale office is on line to the warehouse. 营业部与仓库的计算机联网。
- How do you get start in that line of work? 你是怎么开始干那一行的?