查询词典 vegetation

This study proposed a new method for extracting multiple cropping index on pixel level with multi-temporal moderate-resolution imaging spectroradiometer enhanced vegetation index data based on the crop phenology and decision tree. The method could be divided into two steps.

该文通过深入分析农作物的农时历和耕地的时间序列植被指数曲线的对应关系，提取了反映作物种植模式的特征时相，并以特征时相的EVI值作为特征参量，构建了提取耕地复种指数的决策树方法。

Multivariate statistics has proved that urban impervious surface area is the most important factor contributing to the development of the urban heat island while water and vegetation can significantly reduce the urban heat island effect.

多元统计分析表明不透水面是引发城市热岛的最重要因子。

Its research groups include cell biology, plant molecular biology, mycology, wetland ecology, ecophysiology of plants, vegetation science and ecology, plant genetics, and plant tissue culture.

该系的研究小组包括：细胞生物学，植物分子生物学，真菌学，湿地生态学，植物生态生理学，植被科学与生态学，植物遗传学，和植物组织培养。

Based on Universal Soil Loss Equation and the natural environment characteristics of Fujian Province,four natural factors affecting soil erosion were chosen as the assessment indices,which are the rainfall erosivity,relief,soil texture and vegetation types,and the soil erosion sensitivity of Fujian Province was assessed under the support of GIS.

根据通用土壤流失方程的基本原理，结合福建省的自然环境特征，选择降雨侵蚀力、地形起伏度、土壤质地、植被类型4个自然因子作为评价指标，在G IS软件支持下对福建省土壤侵蚀敏感性进行评价，评价结果综合反映了福建省土壤侵蚀敏感性的分布规律，为土壤侵蚀防治、生态环境保护与建设以及土地资源合理开发利用提供依据。

To discuss civilization is to discuss space, land and its contours, climate, vegetation, animal species and natural or other advantages.

谈论文明是谈论空间、土地和它的等高、气候、植被、动物种类和自然或其它好处。

This demonstrates that Neilson model is suitable to the type of the natural terrestrial vegetation in Jinsan region.

这证明了尼尔逊模型路线图适合于金山地区自然陆地植物群落类型的。

Although the "tree" has the meaning of one kind or another, but in my mind, may be just a tired, something that can be nestling, delicately fragrance of soil and vegetation that can get people to quiet down very quickly.

虽然"树"有这样那样的含义，但在我的心中，可能只是一个累了可以偎依的东西，散发淡淡的泥土和草木清香，可以让人很快地安静下来。

The human disturbance with different strength and the different vegetation type also influenced the number and distribution of carbon and nitrogen cycle genes.

不同强度的人为干扰和不同的植被类型，对土壤微生物碳氮循环基因种类与分布有显著差异。

Sect III : We use function of ERDAS8.5 which distill environmental factors from remote sensing image, and explore the relation between vector density and normalized difference vegetation index.

在指标替换中，我们运用了Co七opng，分析表明：媒介分布与发病地区呈现高度一致性，即媒介密度高的地区发病也高，且与NDVI有较强的一致性。

The northern slope of Changbai Mountain where there is not only a high diversity in vegetation types and species, but also high variation of diversity pattern along the altitude gradient.

不同物种沿海拔梯度的连续或间断分布，不仅反映了环境随海拔的变化规律，同时也反映了物种的生物学、生态学特性、分布状况及对环境的适应性。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。