問題一覧
1
arrangement of primary particles into aggregates
Soil Structure
2
is the movement by very fine particles
Suspension
3
This is a process by which raindrops splash soil sediments from the soil surface into the runoff
Soil detachment by rainfall
4
Classes I-IV
denote for suitable cultivation
5
bouncing movement of particles
Saltation
6
Very rough land; not suitable even for woodland or grazing;
CLASS 8
7
3 Processes involved during soil erosion by water
Soil Detachment by rainfall Transportation Deposition
8
this is more or less less the removal of a thin layer of soil
Sheet Erosion
9
is the portion of rainfall that makes its way toward stream channels, lakes, or oceans as surface or subsurface Flow.
Runoff
10
this is erosion induced by human activities that
Accelerated Erosion
11
Productive soils on gentle slopes; moderate depth
class 2
12
(via wind or water)
Transportation
13
Forms by Which Materials are Carried away
Extrusion Efflution Efflusion
14
particles of intermediate size move off downwind into the bouncing action called saltation.
Efflusion
15
this is an erasion occurring along the sides of river banks
Stream Bank Erosion
16
rolling movement of particles
Creep
17
defined as the fineness or coarseness of soil particles.
Soil texture
18
moving particles are larger and bouncing along over the surface
abrasion
19
this refers to the vulnerability or proneness of the soil to erosion.
Soil erodability
20
2 General types of erosion
Geologic or Natural erosion Accelerated Erosion
21
from upslope to downhill direction,
transportation
22
This refers to the process of sediment settling out under the action of gravity
Sediment deposition
23
types of water erosion
Sheet Erosion Rill Erosion Gully erosion Stream bank erosion
24
the rolling away by large particles
Extrusion
25
was developed by the United States Natural Resources Conservation Service
(LCC) Land capability classification
26
soil projections by tine particles carned in suspension.
Detrusion
27
is defined as the lowering of the soil's capacity to support human life.
Soil degradation
28
USLE FACTORS
R FACTOR K FACTOR LS FACTOR C FACTOR P FACTOR
29
FACTORS AFFECTING RUN-OFF
precipitation watershed factor topographic features VEGETATION AND MANAGEMENT PRACTICES
30
Good soils on steep slopes, subject to severe erosion; very severe risk of damage but may be cultivated if handled with great care
class 4
31
Land is too wet or stony for cultivation
class 5
32
is a mathematical model used to predict the long-term average annual rate of soil erosion.
The Universal Soil Loss Equation (USLE)
33
(detachment from the ground)
Soil Detachment by rainfall
34
CLASS 5-8
denote for unsuitable for cultivation
35
This is a type of erosion when runat water generally concentrates on small channels
Rill Erosion
36
this represents the erosion characteristics of the land in its natural environment. undisturbed by human activity
Geologic or Natural Erosion
37
Factors influencing the rate of erosion
1. Rainfall 2. Soil erodability 3. Vegetation or Plant cover 4. Relief (slope) 5. Human Activities
38
Soils of moderate fertility on moderately steep slopes
CLASS 3
39
this is the climatic element that mainly affects erosion in the humid tropics
Rainfall
40
a method of assessing the extent to which limitations such as erosion
(LCC) Land capability classification
41
types of movement by wind action
suspension creep saltation
42
Steep, rough, eroded land with shallow soils; also includes droughty or swampy land
class 7
43
Types of erosion
water erosion wind erosion
44
a type of erosion caused by rainwater, including melted snow running over exposed land surfaces.
Water erosion
45
This method of estimating soil loss
The Universal Soil Loss Equation (USLE)
46
The detachment and subsequent transport of soil materials
soil erosion
47
the removal of very fine particles.
Efflution
48
Shallow soils on steep slopes; use for grazing and forestry
class 6
49
develop deep incisions
Gully erosion
50
(sediemint setting)
Deposition
51
Forms of Wind Erosion
Detrusion Abrasion
52
Deep, productive soils easily worked
class 1