我国人工林森林蓄积量每公顷只有49立方米,也就是一亩地只有3点几个立方米。
Our man-made forest growing stock per hectare poses/ records only 49 cubic meters that equals only over 3 cubic meters per Mu.
提高我国南方山地森林蓄积量遥感估算精度的关键在于准确理解森林反射光谱的内涵。
The key for increase estimate Precision of stand volume is to understand well the interior of forestry reflective spectrum.
利用森林蓄积量推算森林生物量和净生产量的方法,系统研究了我国森林植被的生物生产力。
Method for estimating biomass and net production of forest vegetation from stem volume of stand was proposed in this paper, and biological production all over China was estimated by using this methed.
2003至2008年,森林面积净增2054万公顷,森林蓄积量净增11.23亿立方米。
Between 2003 and 2008, China's forest coverage registered a net increase of 20.54 million hectares and forest stock volume rose by 1.123 billion cubic meters.
但另一方面,我国用材林面积和单位面积上森林蓄积量都在锐减,这就在客观上增加了伐区区划和主伐调查设计的劳动量和劳动强度。
On the other hand, the area of usable forest and the volume of standing timber in one unit area are descending sharply in our country, which aggravates the labor intensify impersonally.
本文在综合森林覆盖率、活立木蓄积量、单位面积森林蓄积量等传统林业评价指标的基础上,研究提出了一项新的指标——森林厚度。
Based on the comprehensiveness of forest coverage rate, total standing forest stock, average forest volume, a new indicator called 'Forest Thickness'(FT) is put forward in this paper.
但是高分辨率遥感影像在林业领域中的应用面临诸多问题,如数据源的价格偏高、图像阴影无法去除、树种识别困难和森林蓄积量估测精度不高等。
However, there appear many problems in its application in forestry, such as the high price of data, the irremovability of image shadow, the low accuracy of quantitative estimation, etc.
利用2003年河南省森林资源清查资料,建立不同优势树种生物量与蓄积量之间的回归方程,对河南省森林的碳储量进行了推算。
Based on the data of forest resources inventories of Henan Province in 2003, forest biomass carbon storage is estimated using regression equation between biomass of various tree species and volume.
文章沿时间顺序对黑龙江省森林面积和蓄积量的数据的参考价值进行考释,以揭示黑龙江省森林资源的变迁。
The paper clarifies and explains the data about the forest area and the volume according the time sequence, and reveals the changes of forest resources in Heilongjiang Province.
该流域森林资源有限且分布不均;单位蓄积量低,林龄结构不合理;林地利用率不高,病虫鼠害严重。
It also shows low unit stock volume, unreasonable forest age structure, low forestland use ratio and severe pest, disease and rat disaster.
通过利用立木蓄积量及森林面积等基本监测数据,对湖南省森林生态系统的碳汇能力及其经济价值进行了初步估算。
Valuation and estimation of the capacity were made on the function of the carbon sequestration of forest ecosystem in Hunan.
凉水溪流河岸带森林立木材积、林分蓄积及溪流倒木数量、平均倒木体积和总倒木蓄积量均高于帽儿山溪流。
The standing tree volume, stand stocking of riparian forest stand, number, average volume and total stock of in-stream LWD at streams in Liangshui were greater than that of Maoershan.
凉水溪流河岸带森林立木材积、林分蓄积及溪流倒木数量、平均倒木体积和总倒木蓄积量均高于帽儿山溪流。
The standing tree volume, stand stocking of riparian forest stand, number, average volume and total stock of in-stream LWD at streams in Liangshui were greater than that of Maoershan.
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