During a forest survey, an aircraft-borne lidar sweeps a beam that fires about 70,000 pulses a second over the canopy.
在一次森林调查期间，从一架飞机负载的激光雷达上扫射出一束发出大约一秒7万次脉冲的红外光从树冠层上穿过。
During a forest survey, an aircraft-borne lidar sweeps a beam that fires about 70, 000 pulses a second over the canopy.
在一次森林调查期间，从一架飞机负载的激光雷达上扫射出一束发出大约一秒7万次脉冲的红外光从树冠层上穿过。
During a forest survey, an aircraft-borne lidar sweeps a beam that fires about 70,000 pulses a second over the canopy.
在森林探测过程中，载有激光雷达的飞机将每秒产生7万个脉冲的激光束向森林树冠进行扫掠。
Confirm the setting of estimation variables of forest survey factors and Optimizing the key factors based on rs and GIS.
以遥感和地理信息为基础，进行森林调查因子定量估测变量的设置及主要变量因子的优选。
Standing stock table is a necessary tool for forestry management, whose precision directly affects the reliability of the forest survey.
立木材积表是森林经营中必不可少的工具，材积表的精度直接影响森林调查结果的可靠性。
Thus, it has a unique advantage in the field of disaster monitoring, environmental monitoring, resource exploration, forest survey, topographic mapping and so on.
因此，其在灾害监测、环境监测、资源勘查、森林调查、地形测绘等方面的应用具有独特的优势。
Remote sensing classification is one of indispensable parts of forest resource survey and supervision. The classification accuracy directly influences the applicable level and practical value.
遥感分类是森林资源调查和监测不可缺少的内容，分类的精度直接影响遥感数据的应用水平和实用价值。
There are no explicit regulations about sublet division and sublot survey in collective forest region of China.
我国目前对集体林区的小班划分、小班调查还没有明确的规程，亟待研讨。
Typical applications include missiles guidance, aerial survey, infrared hunting and tracing system, custom suppress smuggling, salvage equipment and forest fire control etc.
典型应用包括导弹制导、航空测量、红外前视系统、红外搜索跟踪器、海关缉私、海上救援设备、森林消防等等。
It mainly discusses forest resource survey and monitoring on different scales.
其中重点对不同尺度的森林资源调查与监测进行了探讨。
Based upon survey of vegetation in mountainous area of West Lake, the features of vegetation and influence of anthropogenic disturbance on forest community were studied in the present paper.
杭州西湖风景名胜区中西湖山区的森林群落是浙江省目前保存较完整、发育较好的次生植被之一。
Based on survey resources in the past years, natural forest stand structure of Pinus tabulaeformis in Machibei was studied.
依据历年调查资料，对麻池背油松天然林的林分生长结构进行了研究。
Based on a lot of forest resource survey data, the utilizing characteristics and existing problems of forest resource in Heilongjiang areas are studied.
基于大量森林资源调查数据，对黑龙江省森林资源利用特点及其存在的问题进行了全面系统的分析。
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。
A modified inventory system of national forest resources combined with a monitoring survey based on GIS and remote sensing is recommended for China.
野外调查和数据处理的计算机化。根据上述分析，建议在我国采用以遥感和GIS为基础的兼有森林环境监测功能的国家森林资源调查体系。
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。
Collective forest is the main component of forest resources in China. Forest management survey is a very important technologic way in increasing the management level.
集体林是我国森林资源的重要组成内容，森林经理调查是提高集体林经营管理水平的一项重要技术手段。
Based on a survey of 729 citizens in Wuhan city, this paper found that citizen had a great recreation demand for recreational urban forest.
文章以游憩者需求为切入点，针对游憩者游憩倾向和游憩者对郊野公园功能需求方面，对国内部分重点城市的城市居民进行了问卷调查。
Based on a survey of 729 citizens in Wuhan city, this paper found that citizen had a great recreation demand for recreational urban forest.
文章以游憩者需求为切入点，针对游憩者游憩倾向和游憩者对郊野公园功能需求方面，对国内部分重点城市的城市居民进行了问卷调查。
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