Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of soil properties on vegetation restoration in coal-gangue pile in Yima area, China
Waste coal-gangue piles not only occupied and destroyed large fields, but also brought about a series of problems of environment. So it is significant to do the research on restoring vegetation of coal-gangue pile in for local environment. The naturally restored vegetation status and restored vegetation status under artificial interference of coal-gangue pile were investigated by traditional plot-survey, and soil chemicals and physical properties in coal-gangue pile were analyzed by using standard methodology. The natural vegetation patterns along the environmental gradient and their relationships with ecological factors were also analyzed by TWINSPAN, DCA and DCCA. The results showed that the coal-gangue piles could be divided into three groups according to community ordination: I. the 36° slope of the coal-gangue pile that was discarded for 35 years; II. the coal-gangue pile was discarded for 30 or 35 years; III. the age of coal-gangue pile was 45 or 55 years. The results of DCA and TWINSPAN for vegetation plots and soil properties were similar. The axes of DCA and DCCA ordination diagram indicated that the variation of vegetation in coal-gangue pile was influenced by physical properties and soil chemicals, such as cation exchange capacity, bulk density and nutrient. Therefore, the native plant species should be take into consideration to be applied in restoring vegetation in coal-gangue pile, and different species should be selected depending on the discarding age of coal-gangue pile, along with using soil chemicals and physical properties. It was believed that the restoration effect in such coal-gangue pile in this area would be effective. However, in new coal-gangue piles, planting trees (such as Robinia pseudoacacia) could significantly accelerate the natural recovery of vegetation waste dump and soil improvement process. Since natural plants are difficult to grow owing to the instability of slope, measures should be taken to make the slope secure, or along with engineering combined with planting some drought-resistant, barrenness-resistant and deep-rooted tree species to speed up ecological restoration of the slope.
Effects of soil properties on vegetation restoration in coal-gangue pile in Yima area, China
Waste coal-gangue piles not only occupied and destroyed large fields, but also brought about a series of problems of environment. So it is significant to do the research on restoring vegetation of coal-gangue pile in for local environment. The naturally restored vegetation status and restored vegetation status under artificial interference of coal-gangue pile were investigated by traditional plot-survey, and soil chemicals and physical properties in coal-gangue pile were analyzed by using standard methodology. The natural vegetation patterns along the environmental gradient and their relationships with ecological factors were also analyzed by TWINSPAN, DCA and DCCA. The results showed that the coal-gangue piles could be divided into three groups according to community ordination: I. the 36° slope of the coal-gangue pile that was discarded for 35 years; II. the coal-gangue pile was discarded for 30 or 35 years; III. the age of coal-gangue pile was 45 or 55 years. The results of DCA and TWINSPAN for vegetation plots and soil properties were similar. The axes of DCA and DCCA ordination diagram indicated that the variation of vegetation in coal-gangue pile was influenced by physical properties and soil chemicals, such as cation exchange capacity, bulk density and nutrient. Therefore, the native plant species should be take into consideration to be applied in restoring vegetation in coal-gangue pile, and different species should be selected depending on the discarding age of coal-gangue pile, along with using soil chemicals and physical properties. It was believed that the restoration effect in such coal-gangue pile in this area would be effective. However, in new coal-gangue piles, planting trees (such as Robinia pseudoacacia) could significantly accelerate the natural recovery of vegetation waste dump and soil improvement process. Since natural plants are difficult to grow owing to the instability of slope, measures should be taken to make the slope secure, or along with engineering combined with planting some drought-resistant, barrenness-resistant and deep-rooted tree species to speed up ecological restoration of the slope.
Effects of soil properties on vegetation restoration in coal-gangue pile in Yima area, China
Longchang Liu, (Autor:in) / Juan Jia, (Autor:in) / Guorui Xu, (Autor:in)
01.06.2011
366304 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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