Medium-term impact of post-fire emergency rehabilitation techniques on a shrubland ecosystem in Galicia (NW Spain)

IF 2 Q3 SOIL SCIENCE

Spanish Journal of Soil Science Pub Date : 2018-11-15 DOI:10.3232/SJSS.2018.V8.N3.03

M. Raviña, Alexei Vazquez, A. Buján, Angela Martín Jiménez, T. C. Fernandez

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引用次数: 10

Abstract

The aim of this work was to study the effectiveness of two post-fire emergence rehabilitation techniques (seeding and mulching) for reducing soil erosion as well as their effects on the soil quality; therefore in the field, experimental plots of unburnt soil, burnt soil, burnt soil plus seeding and burnt soil plus mulching were established. Soil samples were collected from the A horizon and a wide range of physical, chemical and biological soil properties were analyzed to evaluate soil quality. The effect of fire on the vegetation cover was observed after one year and changes in soil properties persisted even after four years. The phospholipid fatty acids pattern showed that in the medium-term (8-48 months after the fire), the fire may modify the soil microbial communities by altering the plant community via plant-induced changes in the soil environment. No effect of seeding or mulching on the vegetation cover was observed. The mean efficiency in preventing soil erosion between 8 and 12 months after the fire and the application of the treatments was 11% for seeding and 65% for mulching. These stabilization treatments had a minor influence on the post-fire soil quality in the medium-term (48 months); therefore, taking into account its effectiveness for reducing soil erosion, the mulching treatment is recommended as the best post-fire stabilization technique.

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火灾后紧急恢复技术对加利西亚灌木丛生态系统的中期影响(西班牙西北部)

这项工作的目的是研究两种火灾后恢复技术（播种和覆盖）在减少土壤侵蚀方面的有效性及其对土壤质量的影响；为此，在田间建立了火烧土、火烧土、烧土加播种、火烧土加覆盖的试验小区。从A层采集土壤样本，分析了广泛的土壤物理、化学和生物特性，以评估土壤质量。火灾对植被覆盖的影响在一年后观察到，土壤性质的变化甚至在四年后仍然存在。磷脂脂肪酸模式表明，在中期（火灾后8-48个月），火灾可能通过植物诱导的土壤环境变化改变植物群落，从而改变土壤微生物群落。未观察到播种或覆盖对植被覆盖的影响。在火灾发生后的8至12个月内，采用这些处理预防土壤侵蚀的平均效率为播种11%，覆盖65%。这些稳定处理在中期（48个月）对火灾后的土壤质量影响较小；因此，考虑到其减少土壤侵蚀的有效性，建议将覆盖处理作为火灾后的最佳稳定技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Spanish Journal of Soil Science SOIL SCIENCE-

CiteScore

2.20

自引率

0.00%

发文量

期刊介绍： The Spanish Journal of Soil Science (SJSS) is a peer-reviewed journal with open access for the publication of Soil Science research, which is published every four months. This publication welcomes works from all parts of the world and different geographic areas. It aims to publish original, innovative, and high-quality scientific papers related to field and laboratory research on all basic and applied aspects of Soil Science. The journal is also interested in interdisciplinary studies linked to soil research, short communications presenting new findings and applications, and invited state of art reviews. The journal focuses on all the different areas of Soil Science represented by the Spanish Society of Soil Science: soil genesis, morphology and micromorphology, physics, chemistry, biology, mineralogy, biochemistry and its functions, classification, survey, and soil information systems; soil fertility and plant nutrition, hydrology and geomorphology; soil evaluation and land use planning; soil protection and conservation; soil degradation and remediation; soil quality; soil-plant relationships; soils and land use change; sustainability of ecosystems; soils and environmental quality; methods of soil analysis; pedometrics; new techniques and soil education. Other fields with growing interest include: digital soil mapping, soil nanotechnology, the modelling of biological and biochemical processes, mechanisms and processes responsible for the mobilization and immobilization of nutrients, organic matter stabilization, biogeochemical nutrient cycles, the influence of climatic change on soil processes and soil-plant relationships, carbon sequestration, and the role of soils in climatic change and ecological and environmental processes.