The two eco - systems can invert each other in some conditions . the ecotone between oasis and desert is the most prominent area to these activities . it records the most sensitive and intact information on the transition belt 而荒漠与绿洲之间的植被带即过渡带则最为敏感、完整地记录了这两大生态系统之间的相互作用与相互转化。
The area of middle and high vegetation descended , most of the oasis directly face the desert . in the mountain area , the change of no vegetation area was not obvious , and the area of forest increased a bit 中、高覆盖度植被(过渡带)面积减少，过渡带变窄，绿洲更多的直接面临荒漠;西部干旱区山区的荒漠面积变化不大，森林面积略有增加。
This paper analyzes the cementing quality of newly drilled wells and rft in east transitional zone in xing 10 - 11 area and proves the existence of abnormal high pressure horizon in the reservoirs of this oil zone 摘要通过对杏十十一区东部过渡带外扩井区新钻井固井质量的分析及裸眼地层压力测井( rft )结果，证实该区油层段有异常高压层存在。
The results show that thermoluminescent anomalies , whose two edges are higher and the middle is lower , indicate the uranium deposit , the rapidity step of natural voltage indicates the transitive section of oxidation - reduction 自然电位陡梯度变化带反映了氧化还原过渡带的位置。铀、钼、钒的地气异常在矿体上方或矿体边缘位置有不同程度的显示。
We suggest that when beginning forestation in arid region , firstly does it in transition field between oasis and desert , then in sensitive climate field , lastly does it by oasis - desert mosaic nesting 因此，在干旱区生态环境建设过程中，应首先建设绿洲?沙漠过渡带，同时注意绿洲和沙漠的空间结构和配置，以达到生态和气候的相互作用有利于改善环境的目的。
It is believed that favorable zones for the development of reservoir under the same sedimentary fractured tones , that is , transitional zones of slopes and depressions with abrupt or gentle slope , arc favorable for developing lithologic oil and gas reservoirs 认为同沉积断裂带之下的有利储层发育带，即陡坡和缓坡坡洼过渡带是该区有利的岩性油气藏发育区带。
By theory analyses , numerical experiment and application test , the follows conclusions are attained : 1 . the outstanding role of edge detecting algorithm is that it can be used to find out the boundary between different areas 本文通过理论分析、数值实验和实际应用实验，获得了如下成果与认识： ( 1 )边缘检测算法最突出的作用是检测不同区域的过渡带，也就是边缘。
The main results are as following : 1 species diversity indices are significantly different among communities in desert - oasis ecotone , but are low in general ; diversity indices based on important value and cover are more properly in arid desert areas 主要结论如下： 1 、阜康荒漠绿洲过渡带物种多样性在群落间差异显著，总体上多样性水平较低；对荒漠植被，以重要值或盖度为指标计测多样性指数较为可行。
Using the precaution lines of different periods , the end of the paper has analyzed the most possible development trend of yutian oasis - desert transition belt in next 5 or 10 years , and given the constructive advices to local eco - system protection , social or economic project 文章结尾利用所提取的预警线分析了未来5 - 10年内于田绿洲-荒漠过渡带可能的发展趋势，并对当地的生态维护和社会、经济规划提出了建设性意见。
Additionally , through the use of clustering analysis , principal factor analysis and the correlation analysis , we found that the genetic structure of natural population reawnuria soongorica was related to the ecological factors ( soil factors mainly ) of the oasis - desert transitional zone 而其它土壤生态因子则与红砂的遗传多样性指数的相关性均不显著( p 0 . 05 ) 。表明红砂个体的分布可能与过渡带土壤的某些易溶性盐分相关。
