In the survey of forest management previously, the statistic relationship between the photo interpretation volume of the plot and the practical measurement is based on the classical principle of MLS.

以往森林经理调查中，航片判读小班蓄积与地面实测蓄积之间的统计关系多建立在经典的最小二乘原理之基础上。

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Through years of survey and investigation of plot test and high-yielding cultivation, the grain number and spike of wheat were studied.

通过多年的小区高产栽培试验和高产攻关，对小麦的穗数、穗粒数进行了研究。

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With the help of sample plot survey and sampling analysis, the water-containing rate and amount of resources of all kinds of combustibles under alpine pine forest in Nyingchi County are analyzed.

通过样地调查和取样分析，分析了林芝县高山松林下各类可燃物的含水率及其资源量。

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Meanwhile, a national survey is helping to plot dragonflies and damselflies on the map.

BBC: Rare dragonfly visitor at reserve