topsoil

The difficulty of the remediation technology was that the topsoil of the site is sticky, small particle size and severely polluted.

A week later, no smell could be detected as the workers tamped down a final layer of topsoil.

With hoes and axes, they crafted flat, wide terraces and a simple water-management system that would keep valuable topsoil in place.

Thus the farmer is helping nature rebuild the topsoil that holds the rain, resists the wind and provides food for growing plants.

Where there are no trees the rain falls on the surface, causing floods, and carries away with the rich topsoil, in which crops grow so well.

After shoveling out the topsoil, Garfinkel uncovered coins and other artifacts from the time of Alexander the Great.

The fragile land quickly lost its topsoil and became nothing but sand and dust.

Aerodynamics roughness length is one of important indexes for estimating topsoil erosion.

Conserving the earth's topsoil by reducing erosion to the rate of new soil formation or below, involves two principal steps.

Satellite images show a steady flow of dust storms leaving these regions, each one typically carrying millions of tons of precious topsoil.

Professor Bushberg says removing the topsoil might make the land safe for use. But it depends on the depth of the radioactive material.

the hollow block is close to the topsoil and has larger contact area with the topsoil, which causes the block not easily shed.

Across China, rare earth mines have scarred valleys by stripping topsoil and pumping thousands of gallons of acid into streambeds.

Angkor may have suffered problems common to modern times, including deforestation, overpopulation, topsoil degradation and erosion.

Still, on a warm winter day, it is possible to bring in the saved topsoil into our new raised beds.

When the black topsoil was all washed away, farmers moved westward and started new plantations.

These floods have been very useful because they irrigate the Nile Delta and deposit a rich layer of topsoil used for growing crops.

Topsoil temperature were obviously enhanced. But with increased depth of soil, the impact degree of soil temperature gradually reduced.

Miners scrape off the topsoil and shovel golden-flecked clay into dirt pits, using acids to extract the rare earths.

When digging a hole for planting, one should put topsoil and subsoil in two different sides of the hole.

It would appear that the inputs are insufficient to offset the mobilization and leaching of calcium from the topsoil.

During construction of the camp, care should be taken to cause as little damage as possible to the vegetation and topsoil.

Located on a prehistoric lake bed, which accumulated nutrient-rich sediment, contributing to the fertile topsoil.

Advantages claimed for no-till are that it decreases water evaporation and runoff, soil erosion and topsoil depletion.

Irregular rainfall and loss of topsoil means that the land produces less than before.

This topsoil tends to wash away.

When the tarps were removed four days later, the stench hit the workers like a hammer; topsoil was quickly applied.

If just four centimeters of topsoil is scraped off the contaminated farmland, the ministry says, it would create 3. 3 million tons of waste.

SO the topSOil is bits of rock mixed with things that are once alive. These things in the topSOil that were once alive are called humus.

They've plowed up tenacious old prairies, where trees rarely grew, then left the seedlings and the topsoil to blow away.

Topsoil from different soil types shall be stockpiled separately and replaced in the same areas from which they were taken.

Bulldozers, if used, should avoid scrapping topsoil off the site, as often occurs.

The agriculture ministry now says removing that contaminated topsoil may be effective.

They built small dams made of stones to stem rain run-off and to prevent precious topsoil from being washed away.

By protecting the topsoil and reducing fertilizer use, conservation agriculture can help in the fight against global warming.

Mud slides and floods are likely, with streams and rivers carrying off the topsoil.

The erosion of high-quality topsoil has also devastated Haiti's agricultural sector, exacerbating its endemic poverty.

SA : Major conservation and sustainability worries involve freshwater and topsoil.

The deep, brown topsoil of the North China Plain is planted with wheat, corn, millet, sorghum and cotton.

If the topsoil is taken away by erosion, plants can no longer grow in the soil left behind.

With the tree cover gone, every rainy season sees more of the precious topsoil washed away into the lake.

However, small children are particularly exposed to metal-rich topsoil in playgrounds and gardens.

More resistance patterns of coliform were found in topsoil from spots treated with high commercial manure.

Without trees, Haiti lost its topsoil through erosion, crippling agriculture.

When it rains hard, landslides sweep topsoil down to the sea.

With crops that rely on phosphorus, he's breeding shallow roots, since phosphorus is typically found in topsoil.

A low-priced gardening tool that screens garden soil or compost and helps you make great topsoil, in several models.

The Rwandans, interestingly enough have been quite good, Mr. Wilson in preserving their topsoil.

Magnetic particles are mainly multi-domain(MD) and pseudo single domain(PSD) in size, which are coarser in dust than in topsoil.

Consequently, rain water washes away topsoil into rivers and oceans, wind blows away loose soil.

The storms cause respiratory illness, destroy crops and blow away precious topsoil.

for each pound of meat , poultry , eggs and milk we produce , farm fields lose about five pounds of topsoil.

Topsoil is polluted severely and borderland is lighter in heartland of polluted crude oil.

In Mingyong, surging meltwater has carried away topsoil; elsewhere, excess runoff has been blamed for more frequent flooding and landslides.

In creating a new landscape, it is not unusual to bring in a complete complement of topsoil mixed to specification.

When all the topsoil is gone, nothing remains but worthless deserted.

Oil, water, topsoil, phosphorous are all peaking. . . and the climate is changing too.

Topsoil excavated from the work site shall be applied onto the gabions .

Topsoil is being lost to erosion, and arable land is being lost to desert, to salinization, and to urbanization.

We lose topsoil to development, erosion and desertification.

The topsoil was already damaged by the overgrazing of cattle and sheep.

To adjust the water-air-solid proportion in topsoil; Creating deep tilth and suitable seed bed.

Erosion, the wearing away of topsoil by wind and rain, also contributes to water pollution.

Without trees to shelter the fields, the topsoil dried up and blew away.

Worse still, the annual torrential rains washed the topsoil from the hillside.

His clothes are so dirty that he shakes them out every now and then and sells topsoil.

Every contour that can be left alone saves topsoil stripping and replacement.

This causes environmental damage when the topsoil is washed away by the rains.

Loess is easy borne by the wind and may be carried long distances before it falls to earth and becomes topsoil.

Worse still, the storm washed the topsoil from the hillside.

In the absence of successful efforts to stem the loss of topsoil, the social effects of erosion will probably first be seen in Africa.

Water sank rapidly through topsoil.

DO you know what topsoil is made of?

One gene comes frommaismaize, or corn, and the other from topsoil bacterium. Mr.

Heavy rains washed the topsoil away.

In some spots, the topsoil had washed away, exposing the rock below.

Wind eroded the loose topsoil.

A massive operation is under way to remove the toxic topsoil to prevent it spreading downwards.

According to scientists, it takes nature500years to create an inch of topsoil.

Stone is the foundation, above which is soil, and then topsoil.

And because it washes away rich topsoil, erosion can threaten crop yields.

According to scientists, it takes nature 500 years to create an inch of topsoil.

Dump the topsoil here.

One worm may add about 340 grams earth to topsoil.

Here a dry spell meant parched crops, a rainy spell, loss of topsoil.

the conveyer can not only be used for mine digging and materials conveying, but also be used for deep-groove digging and topsoil stripping.

Kriging analysis technique was applied to study the PAHs contents and their spatial distributions in the topsoil of Tianjin area.

So far, farmers have been able to compensate for the loss of fertile topsoil by applying more chemical fertilizers to their fields;

Standard Specification for Topsoil Used for Landscaping Purposes

Topsoil Erosion Ratio and Its Relationship with Structure Properties under Artificial Forest in Purple Hilly Areas of Sichuan

Topsoil Erosion Ratio and Its Relationship with Structure Properties under Artificial Forest in Purple Hilly Areas of Sichuan

Variation of total and particulate organic carbon in topsoil of a Purple paddy under different land use practices

the anthropogenic contamination of vanadium in topsoil was light and moderate through the analysis of enrichment factor;

Influence of land use change on topsoil organic carbon stock: a case study of Wujiang Municipality

The Effects of Different Sowing Ways on the Topsoil Water and Physiological Characteristics of Winter Wheat

Experimental Investigation and Numerical Modeling for Removal of Chloropicrin from Topsoil by Soil Vapor Extraction

Accumulation Characteristics and Environmental Risk Assessment of Heavy Metals in Xuzhou Urban Topsoil

Effects of different fertilization on soil organic carbon distribution and storage in micro-aggregates of red paddy topsoil

Relationship between Iron Oxides, Organic Matter, Grain Sizes and Magnetic Parameters in Xuzhou Urban Topsoil

Protection of Groundwater from Leaching of Organic Contaminants by Topsoil Modification

The Pb Contamination Assessment and Fractionation of the Topsoil in Lianyungang

Medium scale spatial structures of polycyclic aromatic hydrocarbons contents in the topsoil of Tianjin Area

A Lab Investigation and Numerical Modeling for Volatilization of Chloropicrin from Topsoil

Topsoil Replacement Thickness of Roadbed with Large Moisture Content in Seasonal Variation Area

Experimental Study on Topsoil Cultivator under Conservation Tillage

Comparisons on Polycyclic Aromatic Hydrocarbons Contents in the Topsoil of Tianjin City with Those of Some Foreign Cities

Research on numerical simulation of pile foundation subjected to topsoil lateral movement in mining area

Influence of Organic Manure and Inorganic Manure Interaction on Yield of Maize and Characteristic of Topsoil

Accumulation, Distribution and Environmental Risk of Heavy Metals in Xuzhou Urban Topsoil

Effects of Irrigation Methods on Salt Accumulation in Topsoil in Vegetable Field Mulched with Plastic Film

Reclaimed comparison of mixed pushing with topsoil stripping of mining subsided land at Wuyang mining area

Characteristics of Topsoil PAHs Distribution in Tianjin Different Areas

Topsoil's Organic Carbon Density Distribution and Carbon Pool Calculation of Rice Soil in AnHui Province

Source Apportionment of Polycyclic Aromatic Hydrocarbons in the Topsoil of Tianjin

Distribution characteristics of phosphorus in topsoil of Jiangsu

the possible reason of small thermal conductivities under the frozen ground is the fine-grained and lower moisture content of topsoil;

Environmental Geochemistry of Vanadium in Topsoil in Panzhihua Mining Area

Construction Experience of Main Well Topsoil Layer Congelation in Zhangbei Coal Mine

Actual Measure and Numerical Simulated Forecast Analysis of Dangerous Position Freeze Temperature Field of Deep Topsoil Layer

Study on the Spatial Correlation between Topsoil's Infiltration Indexes of Farmland

Effects of Long-term Fertilization on Soil Nutrition and Land Productivity in Topsoil of Loess Soil

Topsoil's Nutrient Situation and Changes of Farmland in Tieling, Liaoning Province

Accumulation and Identification of Heavy Metals in Xuzhou Urban Topsoil

Distribution and Contaminant Source of Series Chemicals of Phenanthrenes in the Topsoil of Tianjin Area

Spatial statistics for cadmium, mercury and lead contents in topsoil of Nanjing

Study on Spatial Heterogeneity of Topsoil Nutrient in Fraxinus Mandshurica Plantation

Frequency distributions of anthracene and pyrene in the topsoil of Tianjin

Topsoil nutrition status and fertilization in the farmland of Jiaozuo city

Organic Carbon Density and Storage in Topsoil of Jiangsu and Spatial Analysis

Changes of salt contents of topsoil under three cultivation patterns

Impact of Different Land Use on Topsoil Organic Carbon Density in Anhui Province

Multivariate Statistics Analysis of PAHs in Topsoil of Tianjin Area

Multi-scale spatial characteristics of topsoil PAHs in Tianjin area

Effect of Long-term Fixed Position Fertilization on Nutrition in Topsoil of Black Earth

Heavy Metal Pollution of Dust, Topsoil and Roadside Tree Near by Main City Roadways

A Model for Processes of Lower Atmosphere-Topsoil Interaction in Red Soil Areas

topsoil (soil from) the upper level of soil. In which most plants have their roots

The Varied Trend of Topsoil Nutrient in Heilongjiang Province

Environmental risk and sources of heavy metals in Xuzhou urban topsoil

Study on Acidic Buffering Ability of Farmland Topsoil of Main Soil Types in Henan

Spatial Interpolation Methods of DDT in Tianjin Topsoil

Study on grouting mechanism and parameters in the depths of thick topsoil

A New Regenerated Topsoil Material for Mine Land Reclamation

Spatial PCA and Pollutant Sources of Topsoil PAHs in Tianjin Area

On Sustainable Management and Development of Heavy Metals in Urban Topsoil

Magnetic Response of Metals in Xuzhou Urban Topsoil

Effects of lead and bensulfuron-methyl on biomass in purple paddy topsoil