临界面积 meaning in Chinese
choking section
critical area
Examples
- It is possible to define for a type of community not only a saturation area, but a threshold area, a mean area per individual for all species .
不仅可能确定一定群落类型的饱和面积，而且可能确定临界面积，即所有物种中每个个体的平均面积。 - Just like spectrum can discern the object and their property detected , the slope spectrum can distinguish the types and their geomorphologic characteristics of the research area effectively , too ; especially the spatial distribution of the slope spectrum , as well as their inherent law of the terrain complexity and th e development of geomorphology can also be dig out . in the second , taken the loess plateau of north shaanxi province as the research area , this dissertation investigated the composing , types and the extraction method of the slope spectrum , analyzed the main influencing factors of extraction of the slope spectrum and the existing condition of the slope spectrum , as well as ascertained the critical area at which the slope spectrum can exist stably . the author paid more attention to investigate the spatial distribution of the slope spectrum in the loess plateau
其次，本文以陕北黄土高原为研究区，探讨了坡谱的组成、类型与提取方法；分析了影响坡谱存在与提取的主要因素，并对地面坡谱的存在条件进行了实验与探讨，确定了陕北黄土高原地区地面坡谱稳定存在的临界面积值；对陕北黄土高原地区地面坡谱的空间分异性特征进行分析，获取了研究区坡谱的南北空间分异性规律；建立了我国地形数据库(数字高程模型)在不同空间尺度(比例尺、分辨率、地域尺度)条件下的地面坡谱转换关系，从而获取了不同空间尺度地面坡谱的转换图谱模型，实现了利用高精度的大比例尺dem数据对中小比例尺dem数据的精度纠正，为各类dem数据适用性与应用精度的科学估算及有关标准的制定提供科学了依据。