Influence of altitude and soil characteristics on organic carbon storage capacity of high Andeannatural pastures

Spatial Distribution of Soil Organic Carbon in Relation to Land Use, Based on the Weighted Overlay Technique in the High Andean Ecosystem of Puno—Peru

“…The finding of higher SOC (carbon organic soil) stock in forests and lower SOC stock in grasslands, along with a decreasing trend in SOC from higher to lower altitudes, aligns with several factors that influence organic carbon storage patterns [48]. The finding that the soil organic carbon (SOC) storage capacity of high Andean natural grasslands is controlled by the altitudinal gradient and soil temperature, with higher altitudes associated with higher SOC storage capacity, is consistent with other factors [49].…”

“…Understanding the relationship between altitude, land use, and SOC content is crucial for land management and carbon sequestration efforts [49]. It highlights the potential of grasslands and abandoned arable land in storing carbon and emphasizes the need for sustainable land-use practices to maintain and enhance SOC stocks, particularly in higher altitude regions [64].…”

Heavy metals and soil fertility at NChannelirrigation, Puno, Peru

“…Respecto a la materia orgánica MO, Nitrógeno total y nutrientes disponibles (Fosforo y Potasio), los análisis exhiben valores entre 2 y 2,01 % de MO en suelos irrigados, y 1,97 a 2 para ambos suelos no irrigados calificando ambas zonas como bajos, considerando el clima frígido y seco de la región Puno, ya que, las condiciones edafológicas y climáticas, influyen en la capacidad de acumular MO en los suelos (Marquéz, 2017), en condiciones favorables provocan una mayor concentración del carbono orgánico en el suelo (Huamán-Carrión et al, 2021), influyendo favorablemente en la fertilidad y productividad de los cultivos al mejorar sus propiedades biológicas y fisicoquímicas (García-Gallegos et al, 2020). En cuanto al Nitrógeno total de 0,073 a 0,075 % (bajo), en Fósforo con valores entre 9 y 9,88 ppm (medio) tanto en suelos irrigados como en los no irrigados; por lo observado in situ una de las probables causas es el mal manejo de los suelos.…”

Economic valuation of the ecosystem of the high Andean hydrographic basin tributary of the Chumbao River, through multicriteria analysis

“…In this geographical area, grasslands of various ecotypes collect, store and supply water, which are the sustenance of domestic, agricultural, irrigation, hydroelectric generation and recreational needs in the region (Badamfirooz et al, 2021). Likewise, in the high andean basins there are wetlands that generate plant fibers, food and genetic resources, store and regulate flows, capture carbon and represent an invaluable cultural heritage for its spiritual and religious significance (Arévalo Quijano et al, 2021;Crispin, 2015;Huamán-Carrión et al, 2021). That is why the water produced by these ecosystems in headwaters of andean basins are essential for the socioeconomic development of the country (Barrial-Lujan et al, 2021).…”

“…In 2015 the Ministerio del Ambiente (MINAM) recognizes as a puna ecoregion, belonging to the andean region, which is characterized by having a humid bioclimate, with vegetation cover of grassland formation with extensive pastures, the physiography is characteristic of high mountain, its ecological floor is classified in altimontano for its physiognomy of vegetation, geographical distribution of plant and animal species, biodiversity, soils and climate; its ecosystem is classified as pajonal de puna humid, with vegetation cover of andean pajonal; it presents wetlands, located in pluvial terraces, depressions flat and slightly inclined surfaces, whose main food is rainfall, which is part of a hydromorphic ecosystem distributed in this high Andean region (Perú, 2015(Perú, , 2019a. The climatic conditions are recorded an average relative humidity of 90.86% ranging from 26.2% to 100%; the minimum temperature of -0.09 °C and maximum of 14.94 °C; solar radiation varies between 2 W/m 2 to 1279 W/m 2 with an average of 374.58 W/m 2 ; rainfall averaged 0.05 litres per m 2 ; The wind speed recorded a maximum of 14.6 m/s, whose direction has a rotation of 108 to 228 degrees (Huamán-Carrión et al, 2021). The most representative species of flora in this area are: Azorella compacta, Campanula sp, Hypochaeris taraxacoides, Hypochaeris sessiliflora, Werneria caespitosa, Werneria nubilis, Senecio incana, Perezia pigmaea, Gnaphalium grandilorum, Baccharis tola var.…”