A Comprehensive Analysis of the Characteristics of Physical Geographic Environment in a Region 1Climate (type, characteristics) 2Topography, Landform 3.Vegetation (natural zone) 4.Hydrology: attributes of rivers and lakes (inward and outward rivers or inward and outward lakes), density of river networks 5.Soil: type and fertile or barren climate I. Factors affecting temperature: 1.Latitude (determinant): Affects noon solar height, day length, solar radiation, daily temperature, annual poor (low latitude) The diurnal and annual difference of temperature in latitude area is less than that in high latitude area. 2.Topography (Height, Terrain): Shady and sunny slopes, mountains, plains, valleys and basins at different altitudes (e.g. valleys) The terrain heat of the basin is not easy to dissipate, and the high terrain blocks the winter wind, which is comparable to the mountain area in the same latitude. The original day is worse, the year is worse, etc. 3.Location of land and sea: annual variation of temperature caused by oceanic intensity 4.Ocean Current: Warm Current: Warming and Humidifying; Cold Current: Cooling and Humidifying 5.Weather conditions: where there are more clouds and rains, the daily and annual temperature difference is less than where there are less clouds and rains 6.Underlying surface: surface reflectance (ice and snow reflectance is high, temperature is low); daily and annual temperature difference of green land is less than bare land 7.Human activities: heat island effect, greenhouse effect, etc. Factors Affecting Precipitation: 1.Climate: Atmospheric Circulation (Barometric Belt, Wind Belt, Monsoon) 2.Topography: windward slope, leeward slope 3 3.Topography (altitude): Rainfall reaches its maximum at a certain altitude 4.Location of land and sea: distance from sea 5.Ocean Current: Warm Current: Warming and Humidifying; Cold Current: Cooling and Humidifying 6.Underlying surface (surface condition): lakes, rivers, vegetation cover 7.Human activities: changing underlying surface to influence precipitation VII. Factors affecting solar radiation: 1.Latitude: Determining the Solar Height and Day Length at noon 2.Altitude: high altitude, thin air, strong solar radiation (eg. China's Qinghai-Tibet Plateau) 3.Weather conditions: sunny days, rich solar radiation (eg. Northwest China) Agriculture 2. How to analyze the climatic conditions for the growth of a crop: 1From the two aspects of favorable conditions and unfavorable conditions to analyze; 2From the light, heat, precipitation, day and night temperature difference, meteorological disasters and other aspects to analyze; 3The climatic conditions of spring, summer, autumn and winter are analyzed by stages. For example, try to analyze the climate conditions of cotton growth in North China. Favorable conditions: high temperature and rainy in summer, rainy and hot in the same period; less rain in autumn, sunny weather, adequate light, conducive to cotton Later growth and harvest. Adverse conditions: the sowing date coincides with spring drought, and the irrigation water source is insufficient. Topics on rivers Describe the hydrological characteristics of rivers: 1.Water volume: size, (depending on the characteristics of precipitation) 2.Water level: High and low, variational characteristics (depending on the type of river recharge) are related to local climate (temperature and precipitation) 3 Flood season: presence or absence and length 4.Icing period: whether or not, length (the coldest monthly temperature level) (Consider again whether there is ice flood in this section of the river.) 5.Sediment Content: Depending on the Vegetation Status of the Basin 6.Hydropower: related to topography (river drop size), climate (river water volume size) 7. Describe the characteristics of river systems: The characteristics of river system mainly include the area of river basin, the number and shape of tributaries, flow (long or short), flow direction and river. Network density, river system attribution to inland or outflow rivers, river system shape (see below), river channel (valley width, river bed depth)() Degree, River bending coefficient. 4. Analyse the reasons why rivers are rich in water energy. It is mainly analyzed from two aspects: one is the large drop (located in the transition zone of steps, the great drop of rivers); the other is the large amount of water (see) The amount of precipitation, the area of river basin and the amount of evaporation. Form