The Influence of Vegetation Cover on Summer Precipitation in China： a Statistical Analysis of NDVI and Climate Data

This study provides new evidence for the feedback effects of vegetation cover on summer precipitation in different regions of China by calculating immediate (same season), and one-and two-season lagged correlations between the normalized difference vegetation index (NDVI) and summer precipitation. The results show that the correlation coefficients between NDVI in spring and the previous winter and precipitation in summer are positive in most regions of China, and they show significant difference between regions. The stronger one-and two-season lagged correlations occur in the eastern arid/semi-arid region, Central China,and Southwest China out of the eight climatic regions of China, and this implies that vegetation cover change has more sensitive feedback effects on summer precipitation in the three regions. The three regions are defined as sensitive regions. Spatial analyses of correlations between spring NDVI averaged over each sensitive region and summer precipitation of 160 stations suggest that the vegetation cover strongly affects summer precipitation not only over the sensitive region itself but also over other regions, especially the downstream region.     

AHDM程序与发报程序之间的报文复制与粘贴

目前,市县气象局应用的地面气象测报软件AHDM程序为DOS版本,没有自动传输报文功能。在报文生成后,还需要把报文输入发报程序窗口内,并经过多次校对,确认输入报文正确后,然后再联网上传。这既费时繁琐,又容易出现漏组     

农业气象在农业产业化可持续发展中的作用

新世纪农业气象工作将迸一步发挥其贴近农业生产实践，在农业生产实践中寻找研究对象及确定研究方向，解决农·业生产实践中遇到的有关气象问题，再指导农业生产向前发展的巨大优势，在农业产业化可持续发展中担负着为保障农     

浅谈121信箱的规范设置

河南省的 1 2 1气象信息电话服务始于 1 997年 ,经过几年的努力 ,现已发展成为气象科技服务中的支柱产业。它以方便、快捷、准确的服务特点 ,赢得了社会公众的良好赞誉 ;它的迅速发展及其良好的社会和经济效益 ,引起了气象部门各级领导和职工的高度重视和广泛关注。然而 ,这项工作全省各地的发展并不平衡 ,经营状况差别也较大。寻其原因是多方面的 ,信箱设置问题是其中主要原因之一 :有的是内容太少 ,满足不了社会公众对气象信息需求日益增长的需要 ;有的是内容虽多 ,但存放太乱 ,不方便用户的记忆和拨打 ;还有的是信箱内存放一些与气象无关…     

气象科技服务的当前形势分析

从市场的角度介绍国内外气象科技服务的现状，分析我国气象科技服务存在的问题和面临的形势，提出应对策略和建议。     

南繁的农业气候条件分析与利用

分析三亚市南繁期间(10月至次年4月)的农业气候条件及气象灾害，并提出开发利用的建议。