Sandro Sardon Nina, J. Loaiza-Úsuga, Diego Varga, Yoissy Pari Morales
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引用次数: 0
Abstract
The Puno-Peruvian high plateau have been shaped by humans over the last 8000 years. The Waru Waru system is a direct result of the agricultural activities of the pre-Inca in the last 2000 years. The present study was conducted in the circumlacustrine zone of Titicaca (445,532 ha) near the city of Puno, Peru. The parent material of the soils originates from the Quaternary alluvial and lacustrine deposits within the high plateau with fl at landscapes, and the land is used for temporary and perennial cultivation as well as extensive natural pasture. The entire region was assessed through a pre-liminary soil survey, based on which three soil pro fi les were selected as representative Waru Waru soil structures. The soil samples were subjected to morphological and physicochemical analyses and the genesis in relation to historical use was investigated. The results showed that sandy loam and clay loam textures dominate and the average sand content is 52%, giving the parent material acidic characteristics. The soils are typically covered by natural grassland, with adequate drainage conditions and the presence of a hydrological discontinuity at a depth of 60 cm. The stagnic properties of the soils are related to the seasonally wet and paleohydromorphic conditions originating from paleo-lacustrine conditions and fl ooding. The soils exhibited high variability in base content, with pH ranging from acidic to neutral and evidence of ion leaching processes and incipient concentration of salts at depth. The predominant soils were Stagnosols, Cambisols and Phaeozems in the same order (IUSS Working Group WRB, 2022), corresponding to Inceptisols and Mollisols (Soil Survey Staff, 2022a). The Waru Waru agricultural system covers an area of approximately 123,000 ha, with 5% of this area consisting of natural grasslands. The degradation of the traditional agriculture system (Waru Waru) is in fl uenced by the socio-cultural dynamics and modernization of the agricultural sector.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.