With a Forest of Trees index, the database architect can specify one or more of the leading columns to be used to create a hash key.
有了ForestofTrees索引，数据库架构师可以指定一个和多个引导列来创建一个hash键。
The correlationship between VEGETATION index and feature factors of forest resources is the basis that this remote sensing data will be used in forest resources monitoring.
VEGETATION植被指数与森林资源特征因子之间的相关性是该遥感数据用于森林资源监测的基础。
Multivariate linear model of measurement of forest ecological benefit was set up according to index system of measurement.
按照以上建立的计量指标体系，建立了森林生态效益计量的多元线性模型。
How to evaluate forest asset by means of value index has always been disputed.
如何运用价值量指标来计算森林资产的价值，一直引起人们的争议。
It presented a critical standard for forest park's environmental capacity prediction, and the method and index were studied based on a practical instance.
提出了预测森林公园环境容量的临界准则，进而就环境容量的预测方法、指标等结合实例进行了探讨。
In forest resources database, the query efficiency is the main index for the database system performance.
在森林资源数据库系统中，应用系统的查询效率是衡量其实用性的关键指标。
The vegetation in forest area, in which has the highest vegetation index, the impact of annual change of precipitation on surface vegetation was slight.
对于林区植被，降水的年际变化对地表植被的影响比较小，森林区植被指数最高；
The author then proposes to develop an index of heterogeneity in time, perhaps in the following manner: Habitat, applying the numbers-1 of forest, o for meadow or savanna.
然后作者又提出求异质性在时间上的指数，这多半采用以下方法：生境：森林为—1，草甸或稀树草原为O。
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。
The site index is the amount parameter of evaluating the quality of the forest land.
立地指数是评价林地质量的数量化指标。
Basing on the index system this article gets the classification table and framework chart of the forest asset practicality.
并基于该指标体系对森林资源进行资产实物量分类，得出森林资源资产实物量的分类表以及分类的树状结构图。
The principle of fire monitoring and the fire channel are analyzed on the basis MODIS data and the data processing flow of forest fire monitoring and quantitative identifying index are given.
对用MODIS资料进行火情监测的原理及通道特性进行厂分析，提出了一种用于林火监测的资料处理流程和量化判识指标。
Divided the forest landscape according to the land type and vegetation characteristic, then used GIS software to carry on digitization, calculated the patch index.
根据土地类型和植被特征划分景观类型，然后运用GIS软件进行数字化，并计算斑块指标。
By analyzing the relationship between color index, evenness index and scenic beauty showed that color index and evenness index can reflect scenic beauty of forest landscape in a certain extent.
通过分析彩色指数和均匀度指数与森林景观美景度的关系，表明彩色指数和均匀度指数能在一定程度上反映森林景观的美景度。
In this paper, the evaluation index system of social service function of urban forest ecosystem is founded, and the evaluation methods are discussed.
文中提出了城市森林社会服务功能价值评价的指标体系，并探讨了其评价方法。
The tropical mountain rain forest located at mid-high altitude with slight anthropogenic disturbance had the highest soil nutrient-holding capacity and integrated soil quality index.
位于中、高海拔，人为干扰最轻的山地雨林原始林具有最好的土壤养分保持能力，土壤综合质量指数最高。
According to the main functions and benefits of forestry ecological system, the index system of the economic losses of forest pest disaster evaluation was determined.
在分析森林生态系统所发挥的功能与效益的基础上，提出了森林病虫害灾害经济损失评估的指标体系。
MOE reflects log or lumber material anti-bend, important index of the anti-press strength, which is the important contents for developing forest wood breeding.
杨氏弹性模量是反映树干或板材抗弯、抗压强度的重要指标，是开展林木材质育种研究的重要内容。
The forest landscape patterns of Gejiu city of Yunnan province were analyzed by using the landscape index method.
采用景观指数法对个旧市城市森林5种景观类型的格局进行了分析。
Taking Yushan forest Park as an example, the paper proposes the ideas and index system of healthy diagnosis of forest ecosystem of Yushan.
介绍森林生态系统健康研究概况及国内外相关领域的研究进展，以虞山森林公园为例提出虞山森林生态系统健康诊断的思路及指标体系。
The evaluation index system of tourism attraction of forest landscape is set up by dissecting relation of tourism attraction factor and using psychophysical methods and fuzzy evaluation methods.
森林景观是陆地上一种重要的旅游资源，通过剖析影响森林景观旅游吸引力的因子关联，并引入心理物理学方法与模糊评价方法，建立森林景观旅游吸引力评价指标体系。
Result shows, This competition index is suitable to Chinese fir man-made forest, and individual tree growth model accords with the demands of accuracy, it can be used to estimate growth of stands.
结果表明：该竞争指标对杉木人工林适用，所建立的单木生长模型符合精度要求，可用于预估林分生长。
Additionally, spatial association index was computed to characterize the spatial interactions between forest class and other target land use types of interest.
另外，计算景观类型间的空间关联指数，以刻画森林与其他土地利用类型的空间交互效应。
The soil nutrient index calculated from bacterial population indicated that the nutrient levels of the four grass-forest systems were very low, only between 0.003 and 0.014.
根据微生物数量计算的土壤营养指数表明，4种草林系统的营养级别都极低，土壤营养指数仅0.003~0.014。
The soil nutrient index calculated from bacterial population indicated that the nutrient levels of the four grass-forest systems were very low, only between 0.003 and 0.014.
根据微生物数量计算的土壤营养指数表明，4种草林系统的营养级别都极低，土壤营养指数仅0.003~0.014。
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