自然地理学(a卷)（Physical geography (volume a)）.docVIP

自然地理学(a卷)（Physical geography (volume a)） Physical geography (volume A) I. conceptual explanations 1. vegetation type: the most important advanced taxon. In the vegetation type group, the plant communities were similar or similar to each other, while the plant communities with the same water and heat conditions were combined into vegetation type. 2. soil texture: the combination of soil particles. Including sand, loam and clay three types. 3. dew point: wet air equal temperature to achieve saturation temperature, that is, dew point temperature. 4., runoff depth: watershed area, except for the total annual runoff of the basin. 5. runoff coefficient: the ratio of runoff depth to precipitation over a given period. 6. heat prevailing wind: the vector difference between upper and lower layers caused by horizontal temperature gradient is heat wind. 7. geostrophic winds: in the free atmosphere, the atmosphere acts as a constant, straight, horizontal motion when the local deflection force is equal to the pressure gradient force. There is a certain relationship between geostrophic wind and pressure field. In the northern hemisphere, the leeward is located, the high pressure is in the right, and the low pressure is on the left. 8. zones: the highest zonal zoning unit. In the division, the belt refers to the geographical belt as a natural complex, not the pure heat band. Two. Fill in the blanks 1., in the non zoning zoning system, from top to bottom are large, regional, sub regional, state The non zonal difference for example: East Asian monsoon climate region, Qinghai Tibet Plateau region. 2. community succession is divided into progression succession and retrograde succession according to its development direction. In the 3.1967 year, the international society of soil has proposed that soil profiles can be divided into 6 main layers: organic layer, humus layer, leaching layer, sedimentary layer, parent material layer and mother rock layer. 4. species diversity index formula f