查询词典 index forest

There were four treatments on the hillside: artificial forest with underbrush, artificial forest without underbrush, planting tea bush on contour terrace, barren on contour terrace. The runoff depth, runoff index, water loss, soil erosion and soil organic matter erosion to the 4 treatments during 4 rainfalls were determined by using the Runoff Collector.

试验设计了人工林下地表覆盖、人工林下地表裸露、等高梯田种植茶树和等高梯田裸地对照4个处理，采用自制的径流收集器分别测定了各处理4场降雨的径流深度、径流系数、水土流失量和侵蚀量等指标。

The dominance index of forest cover was increased from 0.611 to 0.692 during the period from 1985 to 1993,and that of climax forest community was increased by 70%.

这种状况受到国内外学者和政府的重视，对红松阔叶林的研究和保护也日渐深入和加强。

On the basis of systematic analysis and review of the current researches, an forest restoration evaluation indicator system on scale of forest type had been developed, in which seven indexes were selected including the species richness, stand volume, species diversity, conspicuousness, coverage, degree of closeness and height of forest communities. The index weight value were calculated by the analytic hierarchy process.

在系统分析和整合了现有研究成果的基础上，初步构建了包括物种丰富度、林分蓄积量、物种多样性、显著度、盖度、郁闭度及群落高度7个指标的林型尺度森林植被恢复评价指标体系，采用层次分析法计算出指标权重。

And the best water-conserving and flood-controlling forest cover is the main index for regional scale diposition. While the small watershed scale should consider the forest type. And the stable forest structure is the key factor for the disposition in slope and gully scale.

指出在区域尺度上，主要以理水调洪森林覆盖率为区域空间配置的指标；在小流域尺度上主要考虑防护林林种的配置方式；而在坡面和沟道尺度上，主要考虑防护林树种和植被群落的稳定林分结构设计。

In this paper,studied on the soil collembolan in the Liangshui National Natural Conserve.Adopt diversity index,evenness index and common index to analyze.In the 10 habitats,the number of soil collembolan in the manmade Korean pine forest is the most.

对凉水国家自然保护区土壤虫的生态分布进行了研究，采用多样性指数、均匀度指数、共同性指数进行了分析。10个生境中土壤虫数量最多的是人工红松林，最少的是草甸。

The spatial structure character of tree populations in a natural Sonneratia caseolaris + S. apetala forest in Futian, Shenzhen was investigated using position index, mixture index, differentiation index, and Ripley's K-functions.

采用位置指数、混交指数、分异指数以及Ripley's K-方程，探讨了深圳福田红树林保护区海桑+无瓣海桑自然林的空间结构特徵。

Forest carrying capacity is an important and key index in evaluating forest sustainability and one gist of forest management and decision-making of a certain region.

它是森林可持续性评价中的一个重要的关键指标，是区域森林经营管理决策的依据之一。

To construct forest natural capital index, it is needed to construct its quantity index and quality index respectively, and the latter is more difficult.

构建森林自然资本指数需分别构建其数量指数和质量指数，其中质量指数的构建是难点。

of spatial pattern analysisof forest landscaperevealed that,the value of each spatial pattern index of forest landscapewas strongly influenced by comparative economic benefit of landexploitation and forest management level.

通过森林景观空间格局分析，可以看出，森林景观类型的各项空间格局指标受土地利用的经济比较效益和经营的集约度影响较大。

There were no significant differences between the pine forest and the oak forests in terms of leaf area index, canopy coverage, and light intensities above and beneath canopy. The canopy uniformity of the pine forest was significantly lower than that of the oak forest.

l油松林与辽东栎林的叶面积指数、林冠覆盖度、辐射因子和林下光资源没有显著差异，但油松林林冠均匀性显著小於辽东栎林。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。