人为干扰

This algorithm solves the original algorithm's problems such as introducing artificial shadow and gray-level aberrance.

该算法解决了原有算法中需要进行缺失边缘的封闭重建和人为假定封闭区域内灰度相等从而引入人为干扰和灰度畸变的问题。

Habitat selection of goral was mainly influenced by distance to human disturbance, altitude, distance to forest edge, distance to water source, slope position, shrub canopy cover, shrub height, level of concealment, slope aspect and wind direction.

因子分析表明，影响矮岩羊生境选择的主要因子为人为干扰距离、海拔高度、林缘距离、水源距离、灌丛高度、隐蔽级、风级和动物干扰距离等生境因子，而影响斑羚生境选择的主要因子为人为干扰距离、海拔高度、林缘距离、水源距离、坡位、灌丛盖度、灌丛高度、隐蔽级、坡向和风向生境因子。

It could display only when exposed to disturbance which causes the degradation of ecosystem however it is impacted by natural or nonnatural factors. The concepts of fragility and stability, the fragility in relation to species invasion and extriction, to diversity and stability of ecosystem, to primary productivity, to niche differentiation as well as to microclimatic change of ecosystem are discussed....

而干扰（包括自然干扰和人为干扰）又是引起退化生态系统的原因，种类的入侵和消亡、种类组成的变化、生态系统的多样性和稳定性、生产力、生态位的分化及生态系统小环境变化则是研究退化生态系统形成和恢复的重要内容，本文探讨脆弱性与退化生态系统诸方面的关系以及在植被恢复上的应用。

Effect on birds community:Through the analysis of the correlation between the birds amount and frequency in the 9 parks and the 12 structure indexes of the parks,we reach the conclusion that Passer rutilans and Turdus merula are mostly effected by the area of the habitat, while Carduelis spinus,Parus venustulus,Aegithalos concinnus,Anthus hodgson,Paradoxornis webbianus and Trachybaptus ruficollis are mostly effected by humanlnterference.

对鸟类的影响：通过对市区9个公园的生境破碎化相关的结构、连通性、隔离度、人为干扰等12个特征变量与鸟类数量和出现频率的相关分析，发现常见鸟类中，麻雀和乌鸫对生境面积存在显着的相关关系；而黄雀、黄腹山雀、红头长尾山雀、树鹨、棕头雅雀以及小鸊鷉受到人为干扰的影响较为明显；白头鹎和珠颈斑鸠的数量与生境斑块的形状指数呈负相关；麻雀的数量随着斑块中灌木层密度的增加而上升；白鹡鸰随着乔覆盖度的增加而减少。

Species richness and diversity of arborous layer were higher than herbaceous layer but lower than shrub layer in various vegetations except deciduous broad-leaved forest at vertical structure.

从群落特征参数值来看，人为干扰对植物群落特征和结构造成了一定的影响，同种干扰类型下，平均树高、平均胸径、立术密度等表现出相似的规律。

In urban parks and green lands where human disturbance was greater, soil pH was alkali, and the species were mainly belonging to the genera of Haplocladium and Bryum and the family of Pottiaceae. In hilly area where human disturbance was lesser, soil pH turned to acidic, and the bryophytes were more, with pleurocarpous mosses and liverworts being relatively rich.

在市区平原地势的公园和绿地，人为干扰较大，土壤呈碱性，苔藓植物种类以小羽藓属、真藓属和丛藓科为主；而在海拔较高的丘陵地区，人为干扰较小，土壤呈酸性，苔藓植物种类相对丰富，侧蒴藓类和苔类较多。

This dissertation comprehensibly researches the performance of hybrid DS/FH spread spectrum communication systems, operating in a combined additive white gaussian noise , multiple access interference, and channel fading, particularly operating in hostile interference (partial band interference and multitone jamming). At the same time, the dissertation investigates performance of forward error correction coding and diversity technology against channel noise.

本文以此为背景，较为详细地研究了在信道中出现各种噪声干扰（高斯白噪声、多址干扰和信道衰落），特别是敌方的人为干扰（部分带宽噪声干扰和部分带宽多频干扰）时，混合DS/FH扩频通信系统的性能，以及前向纠错信道编码和分集技术对混合扩频通信系统信道出现噪声干扰时系统性能的改进情况。

Because It has stronger ability of resisting narrow band,multipath and jamming interference than that of the conservational communication systems,and also has advantages of concealed information and multiple access secure communication,thus the spread spectrum communication technology draws the people's attention more and more.

由于扩频通信系统与常规的通信系统相比，具有很强的抗窄带干扰，抗多径干扰，抗人为干扰的能力，并具有信息隐蔽、多址保密通信等优点，因而越来越受人们的重视。

Under natural conditions and with human activity, the dominance of Oxytropis coerulea become weaker than ever among associations, which reflects a tendency of inverse succession, while those which are less disturbed by human activity show xerosere character because of poor habitat.

在自然条件和人为干扰双重作用下，蓝花棘豆Oxytropis coerulea在群丛中的优势度明显弱化，群丛反映出逆演替趋势，受人为干扰较少的群丛则由于生境条件较差显现旱生演替特征。

It was suggested that the best method should be the closing off afforested mountains for protection at the first stage planting in the area of intense human-induced disturbance.

川西亚高山人工针叶林土壤生态功能随人为干扰强度的增加而减弱，建议在最易受人为干扰的造林地区，最好是在造林初期封山育林。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。