搜索结果: 151-165 共查到“土壤物理学”相关记录701条 . 查询时间(4.103 秒)
不同施氮处理下旱作农田土壤CN４ 、N２Ｏ气体排放特征研究
累积吸收通量 累积排放通量
2015/12/3
依托甘肃农业大学布设在定西市李家堡镇的长期施氮定位实验，对不同施氮农田 ＣＨ４和 Ｎ２Ｏ 气体通量，采用静态箱⁃气相色谱法进行小
麦生育期的连续观测，并对影响通量变化的环境因子同期观测．结果表明：５ 个施氮处理下（０、５２．５、１０５、１５７．５、２１０ ｋｇ·ｈｍ
－２
），旱作农田土壤在
小麦全生育期内表现为 ＣＨ４累积通量的汇和 Ｎ２Ｏ 累积通量的源；且不施氮处理时，ＣＨ...
以浙江富阳某炼铜厂附近受 Ｃｄ、Ｃｕ、Ｐｂ 和 Ｚｎ 复合污染的土壤为研究对象，采用振荡、静置和超声 ３ 种不同浸提方式，通过研究柠檬酸在
不同浸提方式下对重金属的去除效果，筛选出最佳柠檬酸浓度、处理时间及功率，并采用 Ｔｅｓｓｉｅｒ 连续提取法分析浸提前后 ４ 种重金属形态变
化．结果表明，柠檬酸对 ４ 种重金属均具有较好的去除效果，其中对 Ｚｎ 的去除效果最好，Ｃｄ 的去除效果最差，而 Ｃ...
Choosing an Appropriate Hydrological Model for Rainfall-Runoff Extremes in Small Catchments
flood prediction infiltration Jizerské hory Mts
2015/7/28
Many of them are ungauged. The damage
in the catchments is enormous, and the length of the torrents is about 23% of the total length of small rivers in the
Czech Republic. The Smědá experimental m...
Using Basalt Flour and Brown Algae to Improve Biological Properties of Soil Contaminated with Cadmium
cadmium fertilizing substances microorganisms
2015/7/28
In order to achieve homeostasis of soil, the potential of alleviating substances (two innovative: basalt flour and
brown algae extract against two classic compounds: barley straw and compost) were a...
Predicting Oxidizable Carbon Content via Visible- and Near-Infrared Diffuse Reflectance Spectroscopy in Soils Heavily Affected by Water Erosion
Partial Least Squares Regression spectra pre-treatment
2015/7/28
Soil spectroscopy represents a low-cost alternative to routine time-consuming and expensive laboratory analyses.
Its ability to measure a wide range of different chemical and physical soil propertie...
国际权威学术刊物Nature出版集团期刊Scientific Reports于2015年7月17日在线发表了北京大学物理学院郭秋菊副教授课题组的论文“Pu isotopes in soils downwind from Lop Nor: regional fallout vs. global fallout”，报道了他们开展的我国环境土壤中重要放射性核素钚研究所取得的重要进展。
RESPONSES OF VEGETATION GROWTH TO CLIMATE CHANGE IN CHINA
Drought Climate change SPEI NDVI China
2015/5/6
Global warming-related climate changes have significantly impacted the growth of terrestrial vegetation. Quantifying the spatiotemporal characteristic of the vegetation’s response to climate is cruc...
Long-term influence of applied amphibolite powder on the chemistry of soil supporting Norway spruce plantation
soil mountains acidification soil chemistry
2015/5/5
The article assesses the effects of amphibolite applied to the planting holes of spruces on the soil
chemistry. The sampling was conducted fourteen growth seasons after the establishment of the expe...
兹定于2015年12月4-6日在重庆北碚召开中国土壤学会第十二届四次理事扩大会议、学会成立70周年庆祝大会及“土壤科学的传承与发展”学术研讨会
Testing of activated carbon for water and non-volatile LNAPL quantitative determination in porous media under laboratory conditions
activated carbon LNAPL silica sand Silcarbon SC40 sampling interval
2015/3/10
Activated carbon is a highly porous form of carbon, which has an exceptionally large surface area. Activated carbon material has been artificially processed as a set of plates, within which two differ...
Nitrate removal from aqueous solution using natural zeolite-supported zero-valent iron nanoparticles
chemical reduction kinetic modelling nanoscale zero-valent iron particles natural zeolite nitrate sorption isotherm
2015/3/10
A report on the synthesis and characterization of nanoscale zero-valent iron in the presence of natural zeolite as a stabilizer is presented. This novel adsorbent (Ze-nZVI) was synthesized by the sodi...
Spectral characterization of selected humic substances
13C NMR spectroscopy Fourier transform infrared spectroscopy (FTIR) humates lignohumate steady-state fluorescence spectroscopy UV-VIS
2015/3/10
Current concern for soil quality has stimulated research on soil organic matter (OM). Humic substances (HS) of different origin were compared applying ultraviolet-visible spectroscopy, Fourier transfo...
Thermal properties of representative soils of the Czech Republic
heat capacity laboratory measurements sensor comparison soil thermal properties soil-water content soil types thermal conductivity
2015/3/9
Knowledge of soil thermal properties is essential when assessing heat transport in soils. Thermal regime of soils is associated with many other soil processes (water evaporation and diffusion, plant t...
HYPRESCZ - database of soil hydrophysical properties in the Czech Republic
HYPRES pedotransfer functions soil water retention curve
2015/3/9
The database of soil hydrophysical properties in the Czech Republic called HYPRESCZ was created. It is based on the European database HYPRES, HYdraulic PRoperties of European Soils, and follows its st...
Selection of catchment descriptors for the physical similarity approach. Part II: Application
a priori SAC-SMA model parameters catchment characteristic MOPEX catchments regionalisation
2015/3/9
This paper demonstrates an application of the previously published method for selection of optimal catchment descriptors, according to which similar catchments can be identified for the purpose of est...