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The research of soil chemistry is focused on soil solution chemistry, adsorption and desorption of elements at the solid-liquid interface, the composition and property of soil colloids, the structure, property and function of soil organic matter and minerals. It can provide theoretical bases for improving soil fertility and soil environment protection.

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The decrease in area of arable land is in northwest or northeast China where the quality of arable land is better; the increase in area of arable land is in west and south China where the natural conditions are worse.

The current situation of soil resources in China is abundant arable land resources, adequate preserved soil resources, and large cultivated land area per capita.

Pedosphere can support the biosphere and regulate the biological processes, provide nutrients, water and physical condition for plant growth, and determine the distribution and succession of natural vegetation.

The three famous schools generated during the development of soil science are School of Agricultural Chemistry, School of Agricultural Geology and School of Soil Genesis.

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