Anthropogenic soils on forest land of sanitary protection zone of extra high voltage overhead lines
Relevance. Anthropogenic soils, which have lost their natural state, are the poorly known objects. The facts of soil degradation are determined on the forest lands under the overhead transmission line in the sanitary protection zone. These facts are not taken into account by designers of the objects...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2016-12-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/1819 |
| Summary: | Relevance. Anthropogenic soils, which have lost their natural state, are the poorly known objects. The facts of soil degradation are determined on the forest lands under the overhead transmission line in the sanitary protection zone. These facts are not taken into account by designers of the objects. It is caused by uprooting of woody vegetation. Taking into account the length of power lines on the forest land, the effects can be global. The main aim of the study is diagnostics and mapping of soils in a zone of the boreal forest on lands of sanitary protection zone formed at construction and operation of objects. The object of the study is the anthropogenic disturbed soil cover of the sanitary protection zone of a transmission line. The methods used in the study. On the basis of calculations of the soil heterogeneity hierarchical structure in sanitary protection zone, the observation grid of anthropogenic soils with 40 m distance between the nodes was recommended. The soil body boundaries were identified at the scale 1:1000. Sample size was 320 sites. The authors have used nonparametric types of analysis on the basis of a STATISTICA package. The results. The authors analyzed soils biodiversity and defined the extent of lands degradation in a sanitary protection zone; considered the space characteristics of sites of anthropogenic soils. Conclusion. The anthropogenic impact on the lands of sanitary protection zone results in a development of soil cover degradation of different scale, age and origin. It is possible to identify 4 main types of anthropogenic soils of the sanitary protection zone, namely: 1) filled soils (stratozems and stratolit); 2) resectozem 1 of umbric albeluvisols; 3) resectozem 2 of umbric albeluvisols; 4) abrazem. The disturbed areas are superimposed on the natural heterogeneity of the remaining forest soils. It was found that pedodiversity of sanitary protection zone includes 2,2 % of filled soils, 3,9 % of resectozems 1 of umbric albeluvisols, 11 % of resectozems 2 of umbric albeluvisols and 10,4 % of abrazems. The average area of one site is maximum for filled soils (69,5 m2). The anthropogenic soils area is 27,5 % of the area sanitary protection zone. The extent of soil cover degradation is 3 out of 5. During the construction the soil damages are more extensive and more shape-varied, than during the operation period. Comparison of disturbance areas on anthropogenic soil types allows revealing significant differences between resectozems of umbric albeluvisols 2 and abrazems. According to the form factor the contours of filled soils area are significantly more rounded than the abrazems area. The soil cover is highly degraded and needs rehabilitation. |
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| ISSN: | 2500-1019 2413-1830 |