Forests and water are important compositions of forest ecosystem , moreover , they are the most fundamental condition for the life and development of human being . the relationship between forests and water is one of key problems of the present research in forestry and ecology 森林和水是森林生态系统的重要组成成分，也是人类生存与发展的重要物质基础，森林与水的互动作用是当今林学和生态学领域研究的核心问题。
Although the logistics infrastructure has already improved , it still cannot fit the needs of modern logistics . consequently , reinforcing the programming and construction of logistics infrastructure is becoming the important basic qualification of modern logistics 因此，加强物流基础设施的规划与建设，尽快形成配套的综合运输网络、完善的仓储配送设施、先进的信息网络平台等，越来越成为现代物流发展的重要物质基础条件。
The morality construction in china has been a very imminent task , especially the public morality construction . lt is mainly hi city communities for people to run their social actions and build their inter - relationships . which makes them exhibit and form the public morality 城市社区是人们从事社会活动、进行社会交往、建立社会关系的基本单位，是培养和提高民众公共道德的重要物质依托，其作为特定的道德环境影响和制约着人们的道德水平。
Combined harvester with yield - measuring system and gps navigation system is an important component of implementing " precise agriculture " , yield - measuring system is a key to " precise agriculture " . yield - measuring system mainly uses many sensors and gathers various kinds of relevant signal in order to reach to an function of monitoring unit area output in real time , as the basis of drawing the output picture 配备测产系统的联合收获机是实施“精确农业”的重要物质手段，测产系统又是它的关键，测产系统主要是应用多个传感器，将各种相关信号进行采集，以达到实时监测单位面积产量的功能，作为绘制产量图的依据。
As a hard - core part of epikarst ecosystem , soil makes a hinge action in the karst process . it forms a leach layer between rainfalls and carbonate and gives a great much time and space in the karst process . soil co2 , a very pivotal factor in the karst dynamic factors , makes an action of driving forces in karst dynamic system 土壤作为表层带岩溶生态系统的核心部分，在岩溶过程中起着枢纽作用，它的存在使得大气降水与碳酸盐岩之间形成一个“过滤层” ，赋予岩溶作用更广阔的时间和空间，其中土壤co _ 2是个非常关键的因子，它是岩溶作用的重要物质来源，在岩溶动力系统中起着驱动力作用。
