Which of the following is also known as 'soil-moisture drought'?

Question

Accepted Answer

Agricultural drought is also known as 'soil-moisture drought' because it is directly related to the deficiency of moisture in the soil profile. This deficiency impacts crop production and agricultural activities. Agricultural drought focuses specifically on the lack of available water for plants, which is a direct consequence of insufficient soil moisture. The term "soil-moisture drought" accurately describes this condition.

Here's why the other options are incorrect:

1.  **Meteorological drought:** Meteorological drought is defined by a prolonged period of below-average precipitation. While it can *lead* to soil moisture deficits, it is not *defined* by them. It's a broader measure of rainfall deficiency, not specifically soil moisture.

2.  **Ecological drought:** Ecological drought refers to a prolonged period of water deficit that creates widespread stress in natural ecosystems. While soil moisture is a *component* of ecological health, ecological drought encompasses a wider range of impacts on plant and animal life, not solely soil moisture.

3.  **Hydrological drought:** Hydrological drought refers to deficits in surface and subsurface water supplies, such as rivers, lakes, and groundwater. While soil moisture can contribute to these deficits, hydrological drought is concerned with larger water bodies and their replenishment rates, not just the moisture content of the soil.