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土壤调查

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For such reasons, the author investigated comprehensively on cropping systems and agriculture development in Fenxin County from 2002 to 2004, using mathematics model and GIS, discussed the cropping systems characteristic and development orientation and optimized the cropping systems spatial distribution. The data were collected from literature, questionnaires to experts and farm households, on-site investigation and field experiments. The main results are as follows:1,Because of inconsequent exploitation and management of the resources, rapid increasing population in hilly region of red soil, the stress on soil, deterioration of farmland ecological environment and soil gleization become more and more serious. Natural features , water and thermal resources and species are abundance.

基于以上目的,作者于2002-2004年,通过资料调研、专家咨询、农户调查、实地考察和田间试验等手段,对江西奉新县的种植制度和农业发展进行了全面的调查,通过建立数学模型和运用地理信息系统,对奉新县的种植制度的特征和发展方向进行了全面的论述,并且对种植制度进行了空间布局优化,主要结果如下: 1、红壤丘陵区由于长期以来对资源的不合理利用和掠夺式经营以及人口的急剧增长,土地压力上升,农田生态环境恶化,土壤潜育化,土壤肥力退化非常严重,但区内自然条件优越、水热资源总量丰富、物种丰富,具有一定的区位优势,为区内种植制度调整提供了有利条件。

Several representative regions including humid subalpine area, arid valley and the adjacent recovery area and the plateau region of Minjiang riverhead were selected to study the soil nutrient and biodiversity change. Based on field vegetation investigation, soil sampling and analyses, Ecological effects of land use/cover in these regions were discussed. Also in corporation with the social and economic data, the recovery methods of different degraded region were put forward.

研究选取亚高山湿润区域,半干旱河谷区及其恢复区,岷江源头高原面区域作为重点,通过大量的野外植被调查,土壤采样分析,多元统计方法等研究典型区土地利用/覆被变化的生态效应;并根据社会经济资料和调查数据和土地覆被-土壤相互作用规律,提出了岷江上游生态恢复对策。

Based on soil radon gas survey in Quanzhou City and Jinjiang City, the authors conducted an investigation of the soil radon gas environment in an area of some 465 km2. The results indicate that radon gas concentrations in soils of Quanzhou and Jinjiang urban areas are at a lower level, whereas those in soils of Quanzhou and Jinjiang suburbs are at a fairly high level. It seems that the radon gas concentration is mainly related to geological background: radon gas concentrations in soils derived from weathering of adamellite, moyite, and biotite schist are higher than those in soils derived from weathering of other rock types.

通过泉州市、晋江市土壤中氡气测量,取得约465 km2土壤氡气环境调查成果,从结果来看,泉州市区和晋江市区土壤中氡气浓度普遍较低;市郊主要为山地,土壤中氡气浓度普遍较高;从土壤中氡气浓度水平的分布来看,土壤中氡气浓度水平主要与地质背景有关,二长花岗岩、钾长花岗岩、钾长浅粒岩及黑云片岩风化土壤中氡气浓度明显高于其他地质背景来源土壤。

It is involved in many aspects of organic matter decomposition, partial regulation of microbial activities, nutrient cycles and crumbly structure. Depending on their diet (saprophagous, phytophagous or predation), soil fauna is closely linked both to each other and to microorganisms, plants and soil.

本论文试图以土壤动物作为生物指标来评价土壤重金属污染,通过对重金属污染区(以浙江省富阳环山乡受污染的农田为例)土壤动物群落结构的调查和在室内设置一定的污染浓度梯度处理的盆栽试验两种方式研究了重金属污染对土壤动物群落的影响,主要结论如下: 1。

The content of copper in the siol of orchard correlated to the using Bordeaux history and soil background values.

果园土壤铜污染调查表明,果园长期使用波尔多液等铜制剂农药,易在土壤中积累,铜在土壤中不易移动,它主要积累在土壤表层。

The level of soil fertility was high in GAP base, but nutrients distribution was unbalanceable: nitrogen and phosphorus in soil could basically satisfy the crop growth; but potassium was not enough.

对三七GAP基地的土壤质地、供肥特性和土壤肥力进行了调查和分析,结果表明,三七GAP基地土壤以壤质粘土为主,偏酸性,土壤肥力水平较高,但各养分因子分布不平衡,氮、磷元素基本满足三七生长的需求,而钾元素普遍不足,在栽培管理上,应根据三七的生长特点、不同生长期及具体的种植片区对养分的要求制定施肥方案,并注意多施钾肥。

In the dissertation,Guizhou Province andGuiyang.Guizhou Province were selected as the research area and the model region.With theguidance of knowledge discover in database and soil erosion theory,remote sensing and GISwere used to study the senior and the primary method of obtaining the soil erosion message,which are based on unstructural knowledge discover in database.All the methods wereapplied to survey the soil erosion in Guizhou and to monitor the soil erosion change inGuiyang,all of the achievements enhanced the water-soil conservation in the research areaand the model region.

本文在知识发现和土壤侵蚀理论指导下,应用遥感和地理信息系统技术,选择贵州省为研究区,贵州省贵阳市为研究样区,进行了基于非结构性知识发现的土壤侵蚀信息提取方法初级方式和高级方式的研究,并把它们应用到研究区和研究样区的土壤侵蚀调查和土壤侵蚀动态监测工作中,促进了研究区的水土保持工作。

Environmental chemical action of Cadmium in topsoil in Chengdu has been studied in this paper, including the Cadmium pollution survey of topsoil in Chengdu, the chemical speciation research of Cadmium in topsoil, the research of correlation between soil character and chemical speciation of Cadmium and eluviating experiment research.

本文针对成都市表生土壤中镉的环境化学行为进行研究,包括以下研究内容:成都市表生土壤的镉污染状况调查;表生土壤中镉的化学形态研究;土壤性状同土壤镉赋存形态的关系研究;土壤淋滤实验研究。

Author was menstruated content of boron and researched the status of lack of Boron and researched relativity of its Influencing facto, the results showed that the average content of available boron in the yellow soil was 0.39±0.27 mg/kg, 80 percent of its was under 0.5mg/kg which was lack for boron and 17.44 percent of its was under 0.2mg/kg which was especially lack for boron; The distribute frequencies of available boron contents of yellow soils in Chongqing was dispersedly, its range of 0.07mg/kg to 1.99mg/kg. The diversity of different zoology area was distinct. The result of pertinence analyses showed that available boron contents had correlativity with the pH(r=0.181** n=281) and CEC(r=0.124** n=281 and It had correlativity with Organic matte When the content of organic matte is high; in addition, soil granule、clime was the Influencing factor of availability of boron in Yellow Soils in Chongqing.

笔者通过调查取样对重庆市黄壤硼的含量进行测定并分析了缺硼的程度,对其影响因素进行了相关性分析,研究结果表明:重庆市黄壤有效硼的平均含量为0.39±0.27mg/kg,其中近80%的土壤样品有效硼含量低于0.5mg/kg,属于低硼或缺硼土壤,还有17.44%的土壤样品有效硼含量低于0.2mg/kg,属于极度缺硼的土壤;而有效硼含量的分布频率比较分散,变幅较大,从0.07mg/kg~1.99mg/kg,变异系数达到69.41%,不同生态类型区土壤有效硼含量的差异十分明显;而相关性分析结果表明:土壤有效硼与土壤pH值(r=0.181** n=281)和CEC(r=0.124** n=281呈正相关,在有机质含量较高的条件下与其相关性也较为显著(r=0.347** n=90,而土壤质地以及气候也对重庆市黄壤硼的有效性有很大的影响

There are thinks the double features of saline and alkaline for the formation and evolutionprocess of the salinization soils in this region,the generation intensity and scale are related withgeomorphological types,shallow water geochemical types,shallow water table and soil structureetc.,presents the quantity relationship between the salinization degree of the soils,shallow watertable and mineralization,expounds the four stage and seasonal succession features of slattransference and inversion,discuss the interaction between ions in shallow water and soils and thethe regularity of the salt transference and accumulation under freeze-thaw action.

本文在野外调查、监测及实验研究的基础上提出松嫩平原盐渍土的形成过程存在盐化与碱化双重作用,其发生强度和规模与地貌、潜水类型、径流条件、潜水水位、土壤结构有关,提取出潜水埋深、矿化度与土壤盐渍化程度关系的定量指标,以及土壤盐分迁移转化季节性变化的四个阶段及其特征。同时重点研究了潜水与土壤之间元素交互作用及冻融作用下盐分迁移和聚积规律,为土壤次生盐渍化的防治提供了理伦依据和技术支撑。

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