长江中游地区江湖综合整治环境地质研究

１９９８年洪水险恶,江湖沿岸险象环生,显示出大堤加高与洪水位上升矛盾已发展到激化的程度．从追踪分析一江（长江）两湖（江汉湖群、洞庭湖）关系演变和下荆江蜿蜒性河道演变规律入手,探讨并提出了顺应自然规律,实施荆北人工分流、退田还湖、闸住“三口”、协调发展、江湖两利的综合整治系统工程．     

两种治理洞庭湖的实用技术

精确地测量湖垸高差,是“退田还湖、移民建镇”的科学依据,堤身隐患探测及坝基稳定性评价,是加固干堤的基本前提。ＧＩＳ及高密度电阻率法两种先进实用技术,是项目实施的先进手段。     

东洞庭湖湖洲“98,5”龙卷风分析

本文从发生在东洞庭湖西侧湖洲钱粮湖农场“９８、５”龙卷风现场地物破坏形态出发,系统给出了龙卷风的时空分布、强度特征;在此基础上探讨了此地龙卷强风暴（１）形成的动力和热力因素的独特性;并联系历史教训对提高民用建筑抗风力提出了具有实际意义的决策防御建议。     

构造沉降和泥沙淤积对洞庭湖区防洪的影响

作者利用洞庭盆地多年水准测量资料和洞庭湖近年的泥沙资料,对洞庭盆地的构造沉降速率和泥沙淤积速率进行了分析,从地貌学和水利学角度,对“洞庭湖盆”和“洞庭盆地”这两个不同的空间概念进行了区分,在此基础上,探讨了构造沉降和泥沙淤积对洞庭湖蓄洪空间和防洪大堤的影响。在目前洞庭湖盆被大堤围限的情况下,洞庭盆地的构造沉降运动使洞庭湖的蓄洪空间不断减小;洞庭盆地的构造沉降量虽然在一定程度上缓解了洞庭湖不断萎缩的趋势,但构造沉降对洞庭湖区的防洪形势却是不利的。构造沉降和泥沙淤积均对防洪大堤的质量提出了更高的要求,增大了洞庭湖区防洪的难度。     

构造沉降和泥沙淤积对洞庭湖区防洪的影响

With the long-term data of the geodetic sea level measurements undertaken in the Dongting Basin and the recent sediment data of Dongting Lake, we analyze the tectonic subsidence rate of the Dongting Basin and the sedimentary rate of Dongting Lake. From the point of view of geomorphology and hydrogeology, we distinguish the two different spatial concepts between “the basin of Dongting Lake“ and “the Dongting Basin“. Then, we discuss the influences of the tectonic subsidence and the siltation on the levees and the space of storing flood. The better quality of levees is required due to the tectonic subsidence and the siltation, and the difficulties of preventing flood disasters are increasing.The space of storing flood is not affected by the tectonic subsidence, but by the siltation. At present,the sedimentary rate of Dongting Lake is higher than the tectonic subsidence rate of the Dongting Basin. The tectonic subsidence capacity of the Dongting Basin counteracts a part of sedimentary capacity, and the shrinking tendency of Dongting Lake is restrained to a certain extent, but the tectonic subsidence is harmful to the situation of preventing flood disasters in the Dongting Lake area.     

1951-2002年长江流域降水特征

The monthly, seasonal, and annual precipitation trends in the Yangtze river catchment have been detected through analysis of 51 meteorological stations‘ data between 1950-2002 provided by National Meteorological Administration. Results reveal that: 1) Summer precipitation in the Yangtze river catchment shows significant increasing tendency. The Poyanghu lake basin, Dongtinghu lake basin and Taihu lake basin in the middle and lower reaches are the places showing significant positive trends. Summer precipitation in the middle and lower reaches experienced an abrupt change in the year 1992; 2) The monthly precipitation in months just adjoining to summer shows decreasing tendency in the Yangtze river catchment. The upper and middle reaches in Jialingjiang river basin and Hanshui river basin are the places showing significant negative trends; 3) Extreme precipitation events show an increasing tendency in most places, especially in the middle and lower reaches of the Yangtze river catchment.     

洞庭湖历史时期环境研究

洞庭湖在晚冰期以来经历了多次变化过程.晚更新世末至早全新世呈现深切河谷与零星洼地湖泊共存的河湖切割平原景观. 进入全新世暖期, 人类活动开始在洞庭湖平原地区频繁出现, 新石器时代皂市文化分布表明人类活动主要在洞庭湖周边地区; 大溪文化时期人类已在平原湖区中部开始渔猎活动; 屈家岭文化时期气候转暖, 洪水开始泛滥, 人类活动从洞庭湖平原中部退出; 至龙山文化时期, 气候干燥偏凉, 降水减少, 人类文化活动遗址向湖中推进, 湖泊三角洲有所发展, 湖面缩小.在以后的几千年里, 洞庭湖也同样经历了扩张与萎缩的变化.      

常德市与环洞庭湖经济区一体化发展

常德市社会经济发展无论从常德市在环洞庭湖经济区的空间位置、社会经济地位、还是发展前景 ,应实行一体化发展战略。文中提出了实施一体化发展的新举措 ,即生态为本、治水为重、保护性开发 ;优化结构、明确功能、点轴带发展 ;因地制宜、突出重点、阶段性推进 ;规范政策 ,科学规划 ,湖区一盘棋