And the trend of drought area is markedly increasing in global land in spring and autumn , while the trend of drought area is remarkably decreasing in south america in autumn the flood and drought area also has decadal variety in global 然而北美大陆春季的洪涝面积却是显著的增加趋势。从1948 - 2001年，全球陆地春季和夏季干旱面积增加的趋势非常显著。然而南美大陆秋季的干旱面积却是明显的减少趋势。
The condition of profiles in outer station did n ' t change much in spring cruise , but showed more variable in near - shore stations when observed in different time . fluorescent characteristic per cell can be obtained by flowcytometric analysis . based on fluorescence data of synechococcus of all stations , two distinctly pigment - containing cell types coexisting can be found in some stations of east china sea , which located in all depth of p3 , mixlayer of e7 , 40 - meter depth of e6 of autumn cruise and in mixlayer of p2 of spring cruise 通过对流式细胞计测量的细胞荧光结果来看，在秋季的p3 、 e7整个混合层、 e6站40米层，春季的p2站均发现有两群不同色素含量的聚球藻( high一pe和low一pe )共存现象，极有可能分别属于不同品系，春季共存站位位置比秋季时更靠外，表明在秋季p3 、 e7等站位的共存是季节性现象，可能与此季节黑潮次表层水沿陆架坡涌升入侵到中陆架有关，水团的运动及混合使从外海迁移而来的high一pe与近岸的low一pe得以共存，在春季，由于长江冲淡水的日渐强盛，在中陆架区的共存区域有所外移。
The summer rainfall anomaly of north china is closely related to indian low , west pacific subtropical high , westerly troughs and ridges in mid - latitude , south asia high , subtropical monsoon circulation and cold air activity on the corresponding period , and similar circulation pattern also appears in the preceding spring 结果表明： ( 1 )华北夏季降水异常与同期印度低压、西太平洋副高、中纬度西风槽脊、南亚高压、副热带季风环流和冷空气活动的异常都密切相关。华北夏季降水异常年春季的环流特征与夏季类似。
In a lovely autumn brimming with hope , allow me , on behalf of dalian municipal government , to take the opportunity in this special supplement , to extend my sincere gratitude to china daily s domestic and foreign readers , entrepreneurs and friends who support and make contributions to the economic development of dalian 第二十届大连房屋交易大会即2005大连春季房交会3月18 - 21日将在星海会展中心隆重开幕。从1998年第一届房交会开始，大连房屋交易大会已成功举办了十九届，今年春季的房交会为第二十届。
This paper is the working results of flow cytometric measurements of ultraphytoplankton in east china sea and yellow sea , which including the works of two cruises in autumn 2000 and spring 2001 and two - week time series observation in summer 2001 . in addition , in situ enrichment experiments were designed at e2 station of spring cruise 本文主要内容为流式细胞计在中国东、黄海对超微型浮游植物的检测结果报导，所做工作包括： 2000年秋季及2001年春季的两个航次、 2001年夏季( 7月)在长江口区的定点长时观测，此外，还在春季航次e2站进行了现场营养盐加富培养实验。
By using accumulated meteorological materials while executing the mission , ncep - reanalysis data and nww3 model data , several kinds of dangerous weather system around the southeast african seashore and the inducing great wave area in spring are analyzed , so the origins , the developing and varying regularities of these dangerous weather systems are preliminarily disclosed 摘要本文利用执行任务累积的气象资料、 ncep和nww3海浪模式资料，对非洲大陆东南侧海域春季的几种危险天气系统及其造成的大浪区进行了分析，初步揭示了这些危险天气系统的成因及其发展和变化规律。
