How does hard dry soil affect flooding?

How does hard dry soil affect flooding?

Dry, compacted soils mean that rainfall is less easily absorbed into the ground, increasing the likelihood of flooding if the country is hit by storms.

Why the presence of large amounts of organic matter alone does not result in fertile soil?

Explain why the presence of large amounts of organic matter alone does not result in fertile soil. This compaction and the loss of pore space reduces the soil’s ability to store water meaning that less water is absorbed by the soil when it rains.

Why am I so rich in organic matter not be fertile?

Why might soils rich in organic matter not be fertile? a. Soil fertility comes from a balance of organic matter and other mineral nutrients. Large amounts of organic material make soil retain too little water.

Can soil compaction can result in increased flooding in an area?

Soil compaction can result in increased flooding in an area. Large amounts of organic material make soil retain too little water.

How does heavy rainfall cause flooding?

Heavy rainfall – if there is heavy rainfall there is less chance of it being soaked up by the soil (infiltration ) so it runs off into the river. The faster the water reaches the river, the more likely it will flood. This will increase the flood risk, as the water will not be intercepted and flow into the river.

How does soil influence flooding?

Soil and rock type can also influence what happens to precipitation when it reaches the ground. Impermeable soils and rocks such as clay or shale do not allow water to infiltrate, this forces water to run off reducing river lag times and increasing flood risk. Permeable rocks allow water to infiltrate into them.

Why do we use organic matter?

Organic matter causes soil to clump and form soil aggregates, which improves soil structure. With better soil structure, permeability (infiltration of water through the soil) improves, in turn improving the soil’s ability to take up and hold water.

Why are organic matters important in the decomposition process?

Organic matter includes any plant or animal material that returns to the soil and goes through the decomposition process. In addition to providing nutrients and habitat to organisms living in the soil, organic matter also binds soil particles into aggregates and improves the water holding capacity of soil.

How can the use of biotechnology lead to an increase in soil conservation practices?

Biotechnology use can lead to a decrease in pesticide and herbicide use, maintaining soil quality. Biotechnology use can increase the amount of management required for agriculture, increasing the likelihood of the practice of soil conservation.

How does flooding rice fields reduce the need for herbicides and pesticides in rice farming?

Explain how flooding rice fields reduces the need for herbicides and pesticides in rice farming. Rice has a submerged growth state while most weeds do not. Therefore, flooding rice fields reduces the growth of these less robust pests without negatively affecting the rice crop.

Which of the following is a cause of soil compaction quizlet?

Soil compaction is caused by reduction in soil porosity.