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Acidification of forest soils in the Hruby Jeseník region
acidification Hruby Jeseník kriged maps soil properties survey spatial distribution
2015/3/3
The Hruby Jeseník Natural Forest Region (NFR) is a border mountain territory which belongs to the areas most heavily impacted by air pollution in the Czech Republic. This paper compares results for so...
Role of soil multifunctionality in sustainable development
soil functions soil resources sustainable development
2015/3/2
Each society wishes to create favourable living conditions for its members. Life quality criteria are formulated in different ways by various societies or individuals, depending on the given geographi...
Soil water regime estimated from the soil water storage monitored in time
ecology classification soil water regime soil water content monitoring soil water storage
2015/2/3
During the vegetation season, the water storage in the soil aeration zone is influenced by meteorological phenomena and by the vegetated cover. If the groundwater table is in contact with the soil pro...
Analysis of Markets in the United States for Brazilian Fresh Produce Grown in Massachusetts
Marketing Brazilian crops Ethnic markets Local Farmers
2014/11/17
This study analyzes the distribution system of fresh fruits and vegetables used by Brazilian population in Massachusetts, which is estimated to be over 250,000. Maxixe (Cucumis anguria) and abóbora hí...
近红外光谱结合偏最小二乘法快速评估土壤质量
近红外光谱 偏最小二乘法 土壤质量 模型
2013/9/18
以长江中下游粮食主产区水稻土为研究对象，采集17种不同施肥处理下共136个土壤样品在350 ～2 500 nm范围的近红外光谱，利用偏最小二乘回归分析结合交叉验证法建立了近红外漫反射光谱与传统化学分析方法测得的全碳、全氮、碳氮比、速效钾、速效磷、电导率、土壤pH等土壤指标之间的定量分析模型。模型的决定系数（R2）以及化学分析值标准差（SD）与模型的内部交叉验证均方差（RMSECV）的比值RSC用于...
烟草根际解钾菌的筛选与鉴定
烟草 解钾菌 速效钾 16S rDNA
2015/8/26
以钾长石粉为唯一钾源的硅酸盐细菌选择性培养基,利用梯度稀释分离法和平板划线分离法对烟草根际土壤的细菌进行筛选。用火焰分光光度法测定培养液内的速效钾含量,以筛选出高效菌株。通过形态观察和16S rDNA序列分析对菌株进行种属鉴定,得到8个高效解钾菌。结果表明,变栖克雷伯氏菌(Klebsiella variicola)、产气肠杆菌(Enterobacter aerogenes)、阴沟肠杆菌(Enter...
平顶山烟区土壤养分含量状况分析
平顶山烟区 土壤养分 含量状况
2011/9/6
适宜的土壤环境条件是烟草优质适产的基础，土壤养分直接影响烟叶品质。笔者对平顶山市6个主要烤烟产区的308个烟田土壤样品进行化验分析，总结各县市烟田土壤养分含量的特点。结果表明：平顶山市植烟土壤pH平均为6.93，有91.23%的土壤在5.5以上；土壤有机质平均含量为15 g/kg，速效氮、磷、钾的平均含量分别为91.6、12.6和108.3 mg/kg；土壤水溶性氯平均含量为21.2 mg/kg，...
用HPLC柱后衍生法分析烟草中氨基甲酸酯类农药残留
高效液相色谱 柱后衍生 烟草 氨基甲酸酯类农药
2015/8/26
采用反相高效液相色谱法对烟草中涕灭威亚砜、涕灭威砜、灭多威、三羟基克百威、涕灭威、克百威、甲萘威、异丙威等8种氨基甲酸酯类农药同时进行残留分析。样品采用乙腈/水提取,NH2-SPE柱净化,柱后衍生荧光检测器(FLD)测定。8种农药在0.1～1.0 mg/L范围内线性良好,相关系数为0.9951～0.9999,在0.05、0.1、0.5 mg/kg添加水平的平均回收率分别为80.8%～110.6%、...
Predicting soil erosion in oriental spruce (Picea orientalis (L.) Link.) stands in Eastern black sea region of Turkey
Soil loss tolerance tree line timberline subalpine zone
2011/1/12
Human induced pressures on the natural resources are still in progress and the conservation efforts, too. The need for sufficient knowledge and data for the decision makers is obvious. This study is a...
Effects of Livelihood Strategies on Adoption of Farm-specific Land Management Practices among Crop Farmers in South West, Nigeria
Livelihood Strategies Adoption of Farm-specific Land Management Practices Crop Farmers South West Nigeria
2010/12/16
Effects of Livelihood Strategies on Adoption of Farm-specific Land Management Practices among Crop Farmers in South West, Nigeria。
Evaluation of methods for measuring soil organic carbon in West African soils
Soil organic carbon loss on ignition dichromate oxidation
2011/1/12
Increased interest in implementing projects in the Sahel region of Africa for sequestration of atmospheric carbon dioxide in soil organic matter has intensified the need for methods that accurately me...
三峡库区消落带土壤物理性质变化
消落带 土壤物理性质 变化 三峡库区
2010/8/20
连续2年对三峡库区消落带土壤物理性质定位监测，研究三峡水库水位涨落对消落带土壤物理性质的影响。结果表明:消落带经受2个水位涨落周年影响区域比未受水位涨落影响区域的土壤密度增加了0.7%～4.6%，土壤总孔隙度、毛管孔隙度和非毛管孔隙度分别减少0.2%～7.5%，0.6%～4.0%和32%～60.8%，最大持水量、毛管持水量及田间持水量分别减少0.6%～15.1%，0.7%～11.9%和0.3%～1...
Parametric approach to land evaluation for forest plantation: A methodological study using GIS model
Parametric approach forest land evaluation land characteristics GIS modeling
2011/1/11
In this study, the land suitability analysis has been carried out to identify suitable areas found in the Yeşilirmak Delta and the Central Black Sea Region of Turkey for afforest plantation. Clim...
IKONOS&LANDSAT卫星影像在剑川县水土流失调查中的应用研究
IKONOS LANDSAT 水土流失 调查
2010/3/29
利用剑川县2007年IKONOS卫星数据资料，对流域的水土流失现状进行普查，并与1999年进行综合治理初的水土流失资料进行对比分析，评价了水土流失治理的成果，为“3S”新技术在水土保持成果调查工作中的应用做了进一步探索。