Modern logistics is a new industry during the construction of national economy. Based on analyzing the environmental problem that was led by the limitation of the strategy during enacting the program
The dry-hot valley of the Jinsha River is one of the typical eco-fragile areas in Southwest China, as well as a focus of revegetation study in the upper and middle reaches of the Changjiang River. Due
Shanghai is a coastal metropolitan city with various types of natural wetlands, which account for 23.5% of its total area. According to the definition of wetland in Ramsar Convention on Wetlands, the
A scanning t-test algorithm for detecting multiple time-scale abrupt changes in the level of a time-series was used to analyze an 8000 year time series of annual precipitation which was reconstructed
The spatial distribution and seasonal variation of the tide-induced Lagrangian Residual Circulations (LRC hereafter), wind-driven LRC, and the coupling dynamic characteristics were simulated using ECO
Based on the historical records of the drought and flood disasters during 1480-1940AD, this paper reconstructs the sequences of wetness index (WI) and drought and flood disasters. We find a good ident
The lower reaches of the Tarim River are one of the areas suffering from most severe sandy desertification in Xinjiang, Northwest China. Irrational utilization of water and land resources results in e
信息有序性和可公度性是自然界的一种秩序,具有广泛的普适意义.历史资料表明,中国水旱灾害具有显著的有序性.基于翁文波的信息预测理论,本文详细分析讨论了中国天灾时间序列的可公度信息系的特性,同时相应构建了长江、黄河历史大洪水以及全国大旱灾信息有序网络结构,并据此进行预测研究.结果表明:(1)我国长江流域大洪灾其可公度信息系的网状结构由基本周期60a、22a、38a、53a、82a所组成,其中干支60a
张家界是神奇地质环境中的天之骄子。石英砂岩峰林巍峨参天,如楼如台,如榭如阁,峡谷幽深,溪涧清澈,植被完好,物种多样。联合国教科文组织地球科学部主任伊德尔先生实地考察后竖着大拇指赞叹:"武陵源地质地貌独一无二,风光景色举世无双,是罕见的地球生命之花。"