Natural and Acquired Soil Quality along Environmental Gradients (tenerife, Canary Islands, Spain)
نویسندگان
چکیده
Abstract Tenerife Island, has a wide environmental diversity due to its altitude (3718m at its highest point) and to the climatic differences between its windward and leeward slopes. This work studies the changes in the natural soil quality along environmental gradients on the Tenerife Island and how this natural quality is modified by man’s effect on the ecosystem. For this purpose, a total of 320 plots in the Southeast of Tenerife Island were studied at altitudes ranging from sea level to 2400 m a.s.l. In each plot, the physicochemical properties of the soils were studied, the ecological characteristics of the environment, the composition and structure of the vegetation and the maturity of the ecosystem. The main environmental gradients and edaphic processes are identified by multivariant statistical techniques. The results show that the natural quality of the soils of Tenerife Island is conditioned by the abrupt topography, the influence of the sea, the recent parent materials, the aridity and the extreme temperatures in coastal and mountain regions. Additional factors include the intense human pressure on the land, resulting in degradation processes such as accelerated erosion, degradation of the structure, biological degradation and alkalinization/salinization.
منابع مشابه
Selective activity of Oleanolic and Maslinic acids on the amastigote form of Leishmania spp
Leishmaniasis represents a serious threat to the health as one of the most important neglected tropical diseases as designated by the World Health Organization. The disease is endemic in 82 countries, among them Tunisia is an indigenous area for cutaneous Leishmaniasis. In a previous work, two tritepenic acids namely oleanolic and maslinic acids have been isolated from olive leaf extract. In th...
متن کاملSelective activity of Oleanolic and Maslinic acids on the amastigote form of Leishmania spp
Leishmaniasis represents a serious threat to the health as one of the most important neglected tropical diseases as designated by the World Health Organization. The disease is endemic in 82 countries, among them Tunisia is an indigenous area for cutaneous Leishmaniasis. In a previous work, two tritepenic acids namely oleanolic and maslinic acids have been isolated from olive leaf extract. In th...
متن کاملSoil properties related to water repellency in volcanic soils at Tenerife (Canary Islands, Spain): relationships with vegetation and soil parent material
Soil water repellency (SWR) was studied in 64 surface soil samples from Tenerife (Canary Islands, Spain), distributed over three different plant communities (natural and afforested Canarian pine forest, and high mountain legume scrub) and three types of soil parent materials (basaltic and salic rocks and basaltic tephra). Soils were studied for physicochemical properties (soil pH and salinity, ...
متن کاملEvaluation of Acanthamoeba isolates from environmental sources in Tenerife, Canary Islands, Spain.
Tests for potentially pathogenic amoebae were carried out in order to determine the presence of free-living amoebae of genus Acanthamoeba in soil and beach sand sources related to human environments in Tenerife, Canary Islands, Spain. Acanthamoeba identification was based on the morphology of cyst and trophozoite forms and PCR amplification with a genus specific primer pair. The pathogenical po...
متن کامل