Geographical question: What is the difference between agricultural types and agricultural regional types? What's the difference between soil type and land type?

Agricultural types are divided into planting, animal husbandry and mixed agriculture according to different production objects; According to the means of production and labor input procedures, it is divided into extensive agriculture and intensive agriculture; According to the procedure of commercialization of agricultural products, it is divided into subsistence agriculture and commodity agriculture. Generally speaking, extensive agriculture is mostly subsistence agriculture, while mixed agriculture and intensive agriculture are mostly commodity agriculture. The types of agriculture can be considered from the internal structure of agriculture, such as planting, animal husbandry, forestry and fishery. It can also be understood from the farming methods, such as irrigated agriculture, oasis agriculture, dry farming, paddy field agriculture, valley agriculture and so on.

Agricultural regional type refers to the relatively stable and stereotyped regional agricultural type formed in a certain region, which can be divided into tropical rain forest migration agriculture, plantation agriculture, rice planting, commodity grain agriculture, mixed agriculture, nomadic industry, ranch animal husbandry and dairy industry according to the regional differences of animals and plants.

Agricultural types emphasize the structure of agricultural departments, while agricultural regional types focus on the regional characteristics of agriculture.

Land type: different quantities and different combinations of characteristics of various components of land (soil, rock, landform, climate, vegetation and water, etc.). The nature of land type depends on the comprehensive influence of the above factors and is not subordinate to any single factor. Land type is the material basis of land use and the basic unit of land evaluation. If the land is taken as a whole, the land type is the individual in the whole. Therefore, the use of land by human beings in production activities is essentially the use of land types. The work of dividing land types according to some signs is called land classification. Because of the different purposes of classification, there are many kinds of land classification.

Cultivated land: mainly distributed in semi-humid and humid plains, basins and low hills; Grassland: mainly distributed in semi-arid and arid plateaus and mountains in the north and Qinghai-Tibet Plateau; Woodland: mainly distributed in northeast, southwest and southeast.

① There are many mountains and few plains, which makes the development and utilization extremely inconvenient; ② Desert, Gobi, alpine desert, Rocky Mountains, glaciers and permanent snow cover a wide area, accounting for about18% of the total land area of China; ③ Among cultivated land, grassland accounts for 4 1.58% of the total land area, followed by woodland (17.95%) and cultivated land (only14.2 i%); ④ The quality of cultivated land is not high (insufficient high-yield land 1/3) and it is seriously degraded; ⑤ There are few reserve resources of cultivated land. Due to the large population and rapid growth, the per capita cultivated land is decreasing day by day, which has become a prominent contradiction.