waterlogged

Because of the special geographical position,topographical condition and unsuitable interference in the waterlogging land of Jianghan Plain, the flood disaster and waterlogging disaster often occur, and the agricultural ecological environment is seriously damaged.

江汉平原涝渍地域由于所处的特殊地理位置、地形条件和不当人为干预等原因,洪、涝、渍灾害频繁发生,农业生态环境受损严重。

The forming reason of the waterlogging land in Jianghan Plain is about the factor of geology and geomorphology,the factor of meteorology and hydrology,and the factor of agricultural activity.

江汉平原涝渍地的成因主要有地质地貌条件、气象水文条件和农业生产活动;涝渍地的演替过程与人类的干预程度密切相关,并表现出时间和空间的分异规律性,从而引起涝渍灾害程度的差异。

The agricultural ecological environment in waterlogging land has been becoming fragile because of the increasing pressure of severe outside ecological environment in the Yangtze basin and the unreasonable reclaimed land from marshes, and exploitation and utilization in lake areas.

由于长江流域日益严峻的外生态环境的压力,加上长期以来湖区不合理的围垦开发利用,使江汉平原涝渍地域的农业生态环境变得十分脆弱。

According to the vast scale datum of investigation and experiment,from the basical ecological factors of water?soil?climate?biology and social economy condition,the paper evaluates the agricultural ecological environment of drainagerelated area in Jianghan plain,and gives the ecoeconomic harnessing cuntermeasures.

从水、土、气、生物及社会经济等基本生态因子入手 ,依据调查和试验资料 ,对江汉平原涝渍地域的农业生态环境进行了评价 ,并提出了综合治理的生态经济对

Study on Model of artificial pasture establishment in waterlogged land;

在涝渍地建立人工草地的模式化研究

A definition of waterlogged land was given,and the connection and distinction between waterlogged land and cropland vulnerable to waterlogging, and wetland were pointed out .

界定了涝渍地的概念,指出了涝渍地与渍害田、湿地的联系与区别。

Taking Sanhu Farm in Hubei Province as an example and by means of the geo-statistical method, the paper studied the spatial variability of four soil fertility factors including organic matter, available nitrogen, available phosphorus, and available potassium in waterlogged land.

利用地统计学的方法,以湖北三湖农场为例,研究了涝渍地土壤有机质、碱解氮、速效磷和速效钾等4种主要肥力因子的空间变异规律,结果表明:土壤肥力因子的分布具有明显的空间变异特性,碱解氮变程最小为1740m,有机质其次,为2200m,速效磷和速效钾分别为58560m和8060m。

In 1988,four clossed fish ponds (4-1,4-2,4-3,4-4) were selected to study the different types of main cultivated fingerlings in fish ponds in the saline-alkali wetland in Yucheng County of Shandong Province.

1988年在山东省禹城县渍涝洼地中选择四口鱼塘以不同放养类型进行试验,4—10月测定其浮游生物数量、生物量的变化。

The infiltration due to rainfall is limited in top layer and is around the range up to 40m from ground surface.

配合丰枯水期地表水及地下水的同位素组成，可追溯地下水源，辅助对地下水流场的了解。

Geochemistry and ~2H and ~(18)O Stable Isotopes of Cangzhou Aquifer Systems

沧州市地下水的水文地球化学与稳定同位素

The results of groundwater isotope analysis show that the groundwater in the Yinchuan Plain has different recharge patterns.

地下水同位素特征表明银川平原地下水具有不同的补给模式。

Analysis on Groundwater Based on Environmental Isotopes in the Longdong Basin

基于环境同位素的陇东盆地地下水分析

Interpretation of the environmental isotopes of groundwater in the middle-eastern part of the Hetao Plain

河套平原中东部地下水的环境同位素特征分析

Hydraulic Relationship Between Malianhe River and Groundwater: Hydrogeochemical and Isotopic Evidences

马莲河河水与地下水的相互关系:水化学和同位素证据

A Study of Hydrochemistry and Isotopes in Thermal Groundwater in the Urban Geothermal Fileld, Beijing;

北京城区地热田地下热水的水化学及同位素研究

Isotopic Tracing of Hydrogeochemical Evolution of Groundwater in the Northern Part of Ordos Cretaceous Basin;

鄂尔多斯白垩系盆地北区地下水水化学演化的同位素示踪

A Study of Isotope Hydrology in Shallow Groundwater and Stream Water in the Xilin River Basin

锡林河流域地表水和浅层地下水的稳定同位素研究

Interactions Between Surface Water and Groundwater in Chabagou Catchment Using Hydrogen and Oxygen Isotopes

基于氢氧同位素的岔巴沟流域地表水—地下水转化关系研究

Study on Groundwater of the Ejin Basin at the Lower Reaches of the Heihe River Using Isotopes;

应用同位素研究黑河下游额济纳盆地地下水

GEOCHEMISTRY OF THE MAIN IONS AND Sr ISOTOPIC COMPOSITION IN THE LOWER REACH OF THE YELLOW RIVER,NORTH CHINA

黄河下游地区河水主要离子和锶同位素的地球化学特征

Carbon and Nitrogen Isotope Geochemistry of Karst Groundwater in City;

喀斯特城市地下水C、N同位素地球化学

undersea radioisotope power supply

水下放射性同位素电源

The middle layer can be considered as a semi-confined layer.

经氢氧同位素组成的分析显示，此区地下水有浅、中、深的分层现象。

THE ENVIRONMENT SIGNIFICANCE OF H, O, C AND CL ISOTOPIC COMPOSITION IN GROUNDWATER OF HEBEI PLAIN

河北平原地下水氢、氧、碳、氯同位素组成的环境意义

Estimation of Groundwater Recharge and Renewal Rate Based on Environmental Isopes in Songnen Plain;

基于同位素技术的松嫩平原地下水补给及更新性研究

Status of Compound-Specific Isotope Analysis in Contaminated Groundwater Studies

有机单体同位素分析技术在地下水污染中的研究现状