Environmental Chemistry

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• Formation of water solution is the result of exchange of materials and energy between the soil components in three phases thus it has complicated components. Commonly seen solutes include inorganic colloid, inorganic slats, organic compounds, complexing compounds and soluble gases, etc. Properties of soil such as osmotic potential (渗透势) and nutrient are crucial to organism living in soil.
• Different types of soil presents different ability to hold water. Water is easily lost in sandy soil due to the loose structure, relatively large pores and gaps of the soil; clay soil holds water well for the compactness and relatively small pores and gaps of the soil. Soil water is both the main source of plant nutrients and the medium for the transport to other environmental elements such as hydrosphere and biosphere.
Page 1 and 2: Environmental Chemistry Part 4 Pedo
Page 3 and 4: Fig 4.2 the general ratio of differ
Page 5 and 6: Fig 4.3b Typical layers found in a
Page 7 and 8: a lower horizon showing loss of mat
Page 9 and 10: three steps of rock weathering incl
Page 12 and 13: (2) Secondary minerals:most are new
Page 14 and 15: •Ledikite (or hydromica) a type o
Page 16 and 17: 2. Organic matter • Any of a clas
Page 18 and 19: (2) Humus: It’s dark, formless ma
Page 20 and 21: • Soil humus is a type of ampholy
Page 22 and 23: 4.1.2 soil moisture and soil soluti
Page 24 and 25: From the prospective of function re
Page 28 and 29: • • 4.1.3 soil air Mixture of d
Page 30 and 31: 4.1.4 microorganism in soil • The
Page 32 and 33: • (3) fixation of nitrogen Nitrog
Page 34 and 35: 4.2 Particle-Size and Texture Class
Page 36 and 37: 4.2.2 • Mineral Components and Ph
Page 38 and 39: • Physicochemical properties and
Page 40 and 41: 4.2.3 classification of soil textur
Page 42 and 43: Standard for classification of soil
Page 44 and 45: • 表 4.8 Clay loam (壤土) comb

Environmental Chemistry

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