Archive for the ‘Physiography’ Category

Characteristics of Soil Organic Carbon of Paddy Soil under Different Land Uses in Jianghan Plain

Distribution, composition and stability of soil organic carbon (SOC) in soil profiles, aggregates, light and heavy fractions in soils from Jianghan Plain were measured. The characterstics of SOC under different land uses were discussed. The main results were as following:1 The SOC contents in soil profiles were different. It was high in top layer soils, [...]

An Experimental Study on Solute Front Transport in Soil and Parameter Estimate

The emission of the industrial waste water, gas and residue, the running off of the excess agricultural fertilizer and pesticides, all of these result in serious pollution of groundwater, and also in transport and dynamic distribution in porous medium need to be studied, and the mathematical models should be developed to describe solute transport in [...]

Effects of Forest Litter Decomposition on Soil Properties in Maoershan Region

Forest litters decomposition was an important process of nutrient cycling in forest ecosystems, and played a central role in soil organic matter formation and nutrients release。 The nutrition elements released from decomposition of forest litters was an important material sources to vegetation grow, and was extremely important to the maintenance of forest soil fertility. Furthermore, [...]

The Biochemical Characteristic of Soil and Its Response to Human Disturbance in Typical Forestland of Qinling Mountain

Long term management of pure plantation may cause a series of ecological problems, such as fertility degradation, decrease of land productivity, deterioration of forest resistance to natural disasters. This may not only affect production and service function of forest, but also seriously threaten the sustainable development of forest ecosystem. This study took four kinds of [...]

Geomorphical Characteristics in the Bordering Coastal Area between Shanghai and Jiangsu Provinces and Their Significance in Sea-Area Division

Sea-area division is an important step to strengthening sea-area comprehensive management,performing sea-area use efficiently,developing ocean economy and keeping coastland in stability and solidarity.Through the study of geomorphical characteristics in the bordering coastal area between Shanghai and Jiangsu province, the paper provides technical results for deciding sea-area borderline of Shanghai and Jiangsu province.According to actually surveyed [...]

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