Soil Tech Finals 3 | 暗記メーカー

暗記メーカー

Soil Tech Finals 3

11問 • 2年前

問題一覧

1

The following are methods used in soil erosion measurement:

Point measurements, Erosion pins, Paint collars, Bottle tops, Pedestals, Tree mounds and tree roots, Profile meters, Rills and roads, Gullies and streambanks, Catchpits, Runoff plots

2

This widely-used method consists of driving a pin into the soil so that the top of the pin gives a datum from which changes in the soil surface level can be measured

Erosion pins

3

Individual measurements of change in level at a single point will vary widely, but if it is an inexpensive and simple method, and a large number of points can be sampled, then a usable estimate can result.

Point measurements

4

When an easily eroded soil is protected from splash erosion by a stone or tree root, isolated pedestals capped by the resistant material are left standing up from the surrounding ground.

Pedestals

5

Another simple way to record the original level is to press bottle tops into the soil surface.

Bottle tops

6

To measure small changes in surface level along a cross section such as an area with a number of parallel cattle tracks, a profile meter may be suitable.

Profile meters

7

In arid or semi-arid climates it is not unusual to find that the surface under trees is raised in a gently sloping dome.

Tree mounds and tree roots

8

When the progress of gully erosion is being studied, measurements are needed both of the horizontal spread of the gully and vertical changes within the gully.

Gullies and streambanks

9

Measuring the cross-section of all the rills in a sample area or along a sample transect is quick and easy, so the method is suitable for measuring change over short time periods, such as the change caused by a single heavy storm.

Rills and roads

10

It is a structure used to measure the overland flow and soil loss thereby under controlled condition. Runoff plots are constructed directly in the field.

Run-off plots

11

Surveys of sediment in reservoirs can be used to make quantitative estimates of erosion as discussed in chapter 5, but simple catchpits may be used to demonstrate comparisons

Catchpits

Soil Tech Midterm 1

Soil Tech Midterm 1

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Soil Tech Midterm 1

Soil Tech Midterm 1

100問 • 2年前

Soil Tech Midterm 2

Soil Tech Midterm 2

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Soil Tech Midterm 2

51問 • 2年前

Crop Sci Midterm 1

Crop Sci Midterm 1

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Crop Sci Midterm 1

Crop Sci Midterm 1

100問 • 2年前

Crop Sci Midterm 2

Crop Sci Midterm 2

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Crop Sci Midterm 2

Crop Sci Midterm 2

77問 • 2年前

Crop Sci Midterm 4

Crop Sci Midterm 4

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Crop Sci Midterm 4

Crop Sci Midterm 4

88問 • 2年前

Poultry Production Midterm 1

Poultry Production Midterm 1

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Poultry Production Midterm 1

Poultry Production Midterm 1

46問 • 2年前

Crop and Animal improvement Midterm 1

Crop and Animal improvement Midterm 1

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Crop and Animal improvement Midterm 1

Crop and Animal improvement Midterm 1

41問 • 2年前

Agri mech midterm 1

Agri mech midterm 1

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Agri mech midterm 1

32問 • 2年前

Irrigation and Drainage midterm 1

Irrigation and Drainage midterm 1

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Irrigation and Drainage midterm 1

74問 • 2年前

Soil Tech Lab Exam 1

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Soil Tech Lab Exam 1

30問 • 2年前

Soil Tech Finals 1

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41問 • 2年前

Module 1 Genetics

Module 1 Genetics

Mutated Lemon · 72問 · 2年前

Module 1 Genetics

Module 1 Genetics

72問 • 2年前

Soil Tech Finals 2

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Soil Tech Finals 2

Soil Tech Finals 2

46問 • 2年前

module 2 (Poultry)

module 2 (Poultry)

Mutated Lemon · 20問 · 2年前

module 2 (Poultry)

module 2 (Poultry)

20問 • 2年前

module 3 ( small ruminant)

module 3 ( small ruminant)

Mutated Lemon · 37問 · 2年前

module 3 ( small ruminant)

module 3 ( small ruminant)

37問 • 2年前

Finals Module 1

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Mutated Lemon · 30問 · 2年前

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Finals Module 1

30問 • 2年前

Finals Module 3

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Finals Module 4

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9問 • 2年前

問題一覧

1

The following are methods used in soil erosion measurement:

Point measurements, Erosion pins, Paint collars, Bottle tops, Pedestals, Tree mounds and tree roots, Profile meters, Rills and roads, Gullies and streambanks, Catchpits, Runoff plots

2

This widely-used method consists of driving a pin into the soil so that the top of the pin gives a datum from which changes in the soil surface level can be measured

Erosion pins

3

Individual measurements of change in level at a single point will vary widely, but if it is an inexpensive and simple method, and a large number of points can be sampled, then a usable estimate can result.

Point measurements

4

When an easily eroded soil is protected from splash erosion by a stone or tree root, isolated pedestals capped by the resistant material are left standing up from the surrounding ground.

Pedestals

5

Another simple way to record the original level is to press bottle tops into the soil surface.

Bottle tops

6

To measure small changes in surface level along a cross section such as an area with a number of parallel cattle tracks, a profile meter may be suitable.

Profile meters

7

In arid or semi-arid climates it is not unusual to find that the surface under trees is raised in a gently sloping dome.

Tree mounds and tree roots

8

When the progress of gully erosion is being studied, measurements are needed both of the horizontal spread of the gully and vertical changes within the gully.

Gullies and streambanks

9

Measuring the cross-section of all the rills in a sample area or along a sample transect is quick and easy, so the method is suitable for measuring change over short time periods, such as the change caused by a single heavy storm.

Rills and roads

10

It is a structure used to measure the overland flow and soil loss thereby under controlled condition. Runoff plots are constructed directly in the field.

Run-off plots

11

Surveys of sediment in reservoirs can be used to make quantitative estimates of erosion as discussed in chapter 5, but simple catchpits may be used to demonstrate comparisons

Catchpits