降水

External regulator of positive feedback is variation of precipitation amount and frequency of extreme precipitation. It is shown that desertification is predetermined by the decreased precipitation as well as by the decrease in frequency of precipitation. In the second half of 20th century importance of man-induced degradation of dry lands as additional regulator of positive feedback has been increased.

正反馈的外部调节因子是降水量的变化和极端降水事件的出现频率，降水量减少以及降水频率的降低直接影响沙漠化的程度。20世纪下半叶，人类因素导致的干旱土地退化作为另外的正反馈调节因子，其重要性正在增加。

Thirdly, the rain gauge observations and QPE/QPF mean areal precipitation derived from radar were used for runoff simulation and forecast using a semi-distributed rainfall-runoff model for Xianghongdian and Foziling subcatchments, as well as several watersheds subdivided from Foziling.

用加密地面雨量计网测得的面雨量和雷达—雨量计联合测量降水或外推的面雨量作为TOPMODEL水文模型的降水输入进行了两个水库所控制的流域及其中一些子流域的流量模拟和预报研究。

Typhoon moved toward the orientation where the forefinger and man grapheme spiral rainband outside.

台风形成的不对称结构影响其移向和降水分布，路径突转时极易产生短时强降水。

Plant can effectively enhance its rainfall retention capacity and improve efficient utilization of rainfall resource through changing rainfall distribution characteristics.

植物能通过改变降雨的分配性能，有效提高其对降水的涵蓄能力和对降水资源的有效利用。

It is believed that by controlling the space-time distribution of precipitation, along riverhead, that may cause disaster, we can control flood, mitigate disaster and utilize water source reasonably. Using this method, we can not only reduce disaster loss and save manpower, material and financial resources, but also solve the water shortage problems of some regions.

通过从源头上控制引起洪涝灾害的水源―降水的时空分布，达到控制水患灾害和充分合理利用水资源的目的，既可减少灾损，节省用于防洪的大量人力物力财力，又可解决急需降水地区生产生活用水的燃眉之急，其优越性是显然的。

While the self-recording rainfall observation data are insufficient,to improve the accuracy of the design flood,the observed data of precipitation should be adopted.

因此，在当地自记降水资料系列允许的情况下，尽量采用实测降水资料直接计算参数，可避免设计暴雨的误差。

Modern approach methods of geography, ecology, quantitative analysis, expert integration, remote sensing image analysis and geographical information system were combined to reveal the matters in this paper. The eco-geographical background of the research area and the research work studied by other scholars were comprehensively expatiated. The temporal and spatial variation of precipitation and soil moisture, vegetation and soil distribution, and land use/land cover were compared as well. On the basis of foregoing analysis, the eco-geographical differentiation was discussed. According to principles and indicators, with extension engineering method and integrated analysis, the physical geography boundary between subhumid and semiarid areas were demarcated. By using remote sensing image analysis, wavelet analysis of the perennial precipitation and temperature, and the comparison of temporal and spatial variation of the desertification, this paper accounted for the regional response to global environmental change and suggested the dominant environmental problems.

本文采用了地理学与生态学相结合、定量分析与专家集成相结合、遥感图像解译和地理信息系统相结合的方法，对研究区的生态地理背景和已有研究工作进展情况给予了全面的分析和阐述；通过对区域水分条件（大气降水、土壤水分条件）、植被、土壤、土地利用／土地覆被状况等环境要素的时间与空间特征的对比分析，探讨了研究区内部生态地理特征的差异；在一定的原则指导下，通过建立指标体系，以可拓工程方法和模型为支撑，经过综合分析确定了研究区内半湿润、半干旱区界线划分方案；通过遥感图像解译、典型站点多年降水与温度的小波分析、土地沙漠化时空变化的对比分析等，说明了研究区域对全球变化的响应；表明了该区域所面临的主要环境问题。

Influenced by the exterior source input of the detrital matters, U-series dating using aragonite is not suitable to the study of Lake Sugan sediment and a further study is required.2. The isotopes study of precipitation-groundwater-lake water system in Lake Sugan drainage area indicates that in modern climate system, the precipitation in Lake Sugan drainage area is mainly supplied by the water vapor carried by Westerly.

沉积物文石的铀系测年受到外源碎屑输入的影响，在苏干湖并不适用，需做进一步的研究。2、苏干湖流域降水-地下水-地表径流-湖水同位素系统研究表明，现代气候条件下苏干湖流域大气降水主要来源于西风环流携带的水汽输入。

It was reverse compared with the positive feedback mechanism from the principle of synoptic meteorology.

然而降水抑制沙尘暴发生的理论无法解释在月际尺度内降水与沙尘暴呈正相关的事实。

The independence test of temperature and precipitation with X2 of the El Nino event reveals that there is no significant effect of the El Nino and La Nina events on the annual temperature and annual precipitation in the drainage basin.

流域气温、降水与厄尔尼诺的X2独立性检验表明，EL Nino与LaNina事件对流域年均气温和年降水不存在显著的影响。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。