防护林

After analysis of TM/ETM+ datas advantage over the forest change detection, Tasseled Cap transformation, Principal Component Analysis and Normalized Difference Vegetation Index were chosen to enhance the vegetation spectral information.

在分析ETM+数据在森林资源监测中的优势的基础上，通过缨帽变换、主成分分析和植被指数法增强植被光谱信息，结合专家分类系统对沿海防护林主要树种进行提取。

Adopting methods such as PRA interview,field survey and forest sample plot survey, the forest traditional culture of deity mountain in Gaoligong mountain area was investigated.

应用参与性农村快速评估、田野调查及森林样地调查等方法，对神山森林传统进行了调查研究，结果表明，高黎贡山普遍存在传统的村社防护林、传统的村社水源林、汉族的风水林、护寺林、傈僳族的神山、傣族的龙山、傣族的色树、勒墨人祭天场周围的森林等形式多样的神山森林，作为传统生态伦理的主要载体，高黎贡山地区广泛存在的神山森林传统在该地区的生物多样性保护中起着重要的作用，神山森林还可以提供多种非木质林产品，实现多种生态功能，促进生物资源的合理利用。

Appears since the humanity on the Earth, humanity's activity caused in the biosphere the material circulation to speed up; The humanity uses own wisdom, through the high tech method, has improved the soil, has created the new variety; Humanity's industrious work caused the barren hill to turn the green and glossy farmland, caused the desert to turn the oasis; Our country constructs "three norths" the protective forest, effectively has suppressed the desert spread.

自从人类出现在地球上，人类的活动使得生物圈中的物质循环加快了；人类利用自己的智慧，通过高科技的手段，改良了土壤，创造了新的品种；人类的辛勤劳动使荒山变成了绿油油的农田，使沙漠变成了绿洲；我国建设的&三北&防护林，有效地抑制了沙漠的蔓延。

The results showed that the effects of wind prevention of the oasis protection forest system were marked.

在此基础上，对绿洲防护林体系的防风固沙效应进行分析。

Farmland protect-system project can protect the farmland from natural disaster and ensure that the land use safe,this paper makes a optimized design on Farmland protect-system,which including choise of the tree breed,the structure and the wide of the shelter belt,and so on.

农田防护工程是为保护整理区土地利用活动的安全以及免受自然灾害危害而建设的农田防护工程，本论文主要从树种的选择，林带的结构，林带的间距等方面对农田防护林体系作一优化设计。

The decrease in farming land and the increase in forestry and grass land resulted from adjustment of agricultural structure and the implementation of Three North Shelter Belt and other anti-desertification projects , while the degradation of pasture resulted from unreasonable human being activities and pasture tenure.

耕地面积减少和林草地面积增加主要是由于农业生产结构的调整和&三北&防护林工程及其他治沙工程的实施，而草原持续退化主要是不合理的人为活动和草原使用&责、权、利&不明确等因素共同造成的。

Exploiting new water and soil resources, improving water and soil use efficiency and digging up the potential of water and soil are important to develop modem forest production. The common feature of building new shelter belt system in different areas with extra emphasis on different facets of forestry is to combine ecologic benefit, economic benefi and social benefit into one. It fully gives expression to the common requirement of modem oasis forestry and modem agriculture.

开发新的水土资源，提高水土资源的利用效率，挖掘水土潜力发展现代林业生产；将生态效益与经济、社会效益结合，不同地区又有所侧重，是建立新防护林体系的共同特点，充分体现出现代绿洲林业及现代农业的共同要求。

The landscape eco-corridor for the disturbed area can be designed into five types, i.e. eco-corridor of shelter belt, eco-corridor of water front, eco-corridor of road, the eco-corridor for connecting the restored areas, eco-corridor of natural landscape.

将水利水电工程扰动区景观生态廊道设计为5种类型：防护林生态廊道、滨水岸线生态廊道、道路生态廊道、修复区连接廊道、自然景观生态廊道。

With the rules of NDVI 〉 threshold 1 and NLBR 〈 threshold 2, the coastal protective forests of 2005 and 2000 were acquired, in which the thresholds were determined from the scatter plots of NDVI and NLBR.

研究发现，综合利用NDVI大于阈值1和NLBR小于阈值2，可以实现沿海防护林的快速提取，而阈值可以根据NDVI和NLBR的散点图确定。

One important form of soil conservation is the use of windbreaks.

其中一种重要的土壤保护方法就是种植防护林。

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。