topsoil相关论文
Levels,distributions,and sources of legacy and novel per-and perfluoroalkyl substances (PFAS) in the
Soil is a major sink for per-and perfluoroalkyl substances (PFAS),wherein PFAS may be transferred through the food chain......
Effect of repeating passes of middle weight tractors with single and addition wheels on soil density
Observed in the literature ambiguity of results obtained in different tests conditions,inspire research continuation for......
Trace Elements in Soils of Dianchi Lake Watershed in Yunnan Province : Controlling Factors and Envir
Field investigation was conducted in order to assess topsoil trace element contents and the factors influencing topsoil ......
Paleovegetational and paleoclimatic evolution series on northeastern Qinghai-Xizang Plateau in the l
Palynological study of 2 lacustrine suites by limnological and 14C dating reveals the local evolutionary history of the ......
Effects of afforestation of agricultural land with grey alder (Alnus incana (L.) Moench) on soil che
Background:Natural afforestation of former agricultural lands with alder species is common in Europe. Symbiotic nitrogen......
Altitude-dependent distribution of 137Cs in the environment: a case study of Aragats massif, Armenia
This paper considers the distribution of technogenic 137Cs and naturally occurring radionuclides:238U,232Th and 40K conc......
Laogang landfill near Shanghai is the largest landfill in China, and receives about 10000 t of daily garbage per day. Sa......
Distribution characteristics of total mercury and methylmercury in the topsoil and dust of Xiamen, C
The levels and distribution of mercury (Hg) species, including total mercury (THg) and methylmercury (MeHg) in the topso......
Spatio-temporal variations in organic carbon density and carbon sequestration potential in the topso
Reliable prediction of soil organic carbon(SOC) density and carbon sequestration potential(CSP) plays an important role ......
通过对京津冀接壤区表层土壤进行网格化调查与采样,采用气量法测定样品碳酸钙含量,运用GIS软件进行Kriging插值,分析区域表土层中......
为了研究生物炭肥料对河套灌区耕层土壤肥力及含水率的影响,试验设置以当地常规施肥为对照(C K ),分别采用与CK处理等养分(C3)、70%养分(C2......
Factors affecting trace element content in periurban market garden subsoil in Yunnan Province, China
Field investigations were conducted to measure subsoil trace element content and factors influencing content in an inten......
The geochemical baseline is the fundamental reference for environmental change and assessment.In this article we describ......
Distribution characteristics of total mercury and methylmercury in the topsoil and dust of Xiamen, C
The levels and distribution of mercury (Hg) species, including total mercury (THg) and methylmercury (MeHg) in the topso......
通过对高密市耕地表层土壤进行调查,获得了N,P,K,Cu, Zn, Mo, B等7种营养元素全量和有效量,以及pH值和有机质数据,采用数据统计、......
By searching literature databases, we obtained more than 200 articles published since 1993 that related to the measureme......
Geochemical baseline determination and contamination of heavy metals in the urban topsoil of Fuxin C
Urban topsoil is the most frequent interface between human society and natural environment.The accumulation of heavy met......
【目的】明确甘肃河西绿洲灌区农田土壤养分的空间分布现状,有助于制定合理的施肥策略和实现该地区农业生产的可持续发展.【方法】......
赤泥耕层土是一种大量消纳赤泥,同时又将其转化为二次资源的赤泥产品。该技术以农作物废弃物为改性剂,通过改性剂在赤泥中发酵腐化的......
沙漠中水分条件是决定生态分异的关键因素,地表凝结水的产生对沙漠植物与结皮生物的水分补充有重要的作用。利用微渗计对古尔班通......
对河西绿洲灌区土壤养分进行的研究表明,该区土壤偏碱性,有机质含量较低,碱解氮含量偏低,有效磷含量中等偏上,速效钾已表现出亏缺......
通过试验测定苹果园土壤水分特征曲线、饱和导水率、土壤体积质量、有机质等土壤理化指标,分析了陕西省优质苹果园表层土壤的水分......
针对25个采自漳州市近郊自然土壤的表层样品进行了细致汞总量检测,依据市国土部门提供的空间图形数据构建环境信息系统,利用GIS的......
通过样品采集和室内分析,研究了成都平原区土壤中Cd高含量区的区域分布特征和第四纪分布的空间响应关联。在绵远河、石亭江流域冲积......
The levels and distribution of mercury (Hg) species, including total mercury (THg) and methylmercury (MeHg) in the topso......
为探究河南省沿黄淮稻麦轮作区土壤供磷能力,寻找适宜的减磷措施,以河南原阳、封丘和信阳3个稻麦轮作典型农田土壤为研究对象,在区......
土壤物理性质是影响土壤侵蚀过程的重要因素。研究了浙江省山核桃林地不同水土保持措施条件下土壤自然含水率、容重和总孔隙度的季......
调查寿光市16个乡镇的耕层土壤,采集907个土壤样品,进行微量元素的分析。结果表明:全市耕层土壤微量元素总体含量丰富,保护地土壤的......
研究了桂西北喀斯特地区植被自然恢复过程中分别处于不同演替阶段的3种灌木群落土壤有机层(OL)与表层土壤(表土,TS)的基本物理与化......
为探究不同耕层土壤有机质含量条件下土壤CO2排放通量变化特征与有机质含量关系,设计耕层土壤6个不同有机质含量处理。通过对土壤CO......
摘 要:为了研究寿光不同棚龄设施果菜类蔬菜耕层土壤养分积累状况,选择当地有代表性的不同棚龄的日光温室25个,用“S”型采样法,采集0......
利用河南封丘潮土的13年长期施肥试验,采用Bremner法研究了潮土耕层有机氮组成的变化,分析了长期施肥对土壤有机氮组份和有机碳含量......
针对高家庄煤矿副立井表土段掘进施工过程中出现的片帮事故,通过分析不同状态下发生片帮的原因,最终确定了高家庄煤矿井田地质条件......
2011年3月采集甘肃省及其周边地区城区、农村和背景区三类采样区32个采样点的表层土壤样品,应用GC-MSD对其六氯苯含量进行分析测定......
为研究北京市地表土重金属污染特征及潜在生态风险,于2013年11~12月采集了北京市不同功能区的表土样品,用沉析法进行沉降和分级,共......
以江苏省多目标区域地球化学调查获得的资料为基础。笔者系统报道了区内耕作层土壤磷素分布现状的研究结果,并初步探讨了该项调查成......
通过对吉尔吉斯斯坦境内40个不同采样环境下采集的表土中元素含量的分析,结合系统聚类(HCA)、降趋势对应分析(DCA)等方法,研究了吉尔吉斯......
在我国典型果业生产区域的黄土高原、胶东半岛和北京郊区选择11个采样区的99个果园,利用GPS定位仪共采集0—20cm表土样品99份,测定......
通过对西江流域肇庆市三叉顶自然保护区典型样地调查,对比分析了林地(针阔混交林、竹林、马尾松林)、农用地(果园、稻田、旱地)与邻近荒......
利用GC-ECD方法测定了珠江三角洲城市群及高海拔地区表层土壤中的有机氯农药。有机氯农药变幅为2.4~78.7 ng/g,平均15.9 ng/g。最高......
应用地统计学技术对全天津地区表层土壤中16种优控多环芳烃含量和土壤理化参数进行了空间结构分析.结果显示,各组分浓度均存在中尺......
为了解黔南地区表层土壤中多环芳烃(PAHs)的污染状况,共采集12个县市土壤样品98份进行16种多环芳烃的定量分析,对其分布特征、污染水......
对仙桃市西南部耕层土壤中12种养分元素的有效量和有效度进行研究,工作区耕层土壤中Ca、Fe、Mn、Cu、Si等元素有效量完全不缺;Mg、......
比较系统地采集了徐州城市主要干道的路边表层土壤样品20件,分析了土壤样品中Pb,Cu和Zn的含量,测定了样品的磁化率。结果表明,土壤......
对广州市道路绿地、防护绿地、生产绿地和郊区风景名胜区绿地等4种表土颗粒组成特征进行了研究。结果表明:道路绿地表土质地以壤土......
文章研究了广州荔湾老城区往东北延伸的样带在不同土地利用方式下广州绿地土壤的理化性状,结果表明,广州绿地土壤利用方式可分为城区......
为了解有机氯农药企业搬迁遗留场地土壤的污染状况,采用气相色谱法定量分析了北京市原某农药厂表层土壤中的有机氯农药(六六六和滴滴......
为发展低碳农业、探讨玉米低碳高产耕作栽培技术对保障粮食安全的影响,通过田间大区对比试验,对玉米平作与垄作耕层土壤温度、水分......
选择合适的插值预测模型对揭示干旱区绿洲地下水与表层土壤特征空间变化特征具有重要意义。根据克里雅绿洲实测地下水(埋深、电导率......
基于GIS和地统计学分析方法,对库车县耕层土壤(0—20cm)养分元素的空间变异特征进行了研究。结果表明:有机质、全氮、碱解氮、有效磷......