globalchange  > 气候减缓与适应
DOI: 10.1016/j.scitotenv.2018.09.075
WOS记录号: WOS:000447915400026
论文题名:
NDVI, Cs-137 and nutrients for tracking soil and vegetation development on glacial landforms in the Lake Paron Catchment (Cordillera Blanca, Peru)
作者: Lizaga, Ivan1; Gaspar, Leticia1; Quijano, Laura2; Dercon, Gerd3; Navas, Ana1
通讯作者: Navas, Ana
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
ISSN: 0048-9697
EISSN: 1879-1026
出版年: 2019
卷: 651, 页码:250-260
语种: 英语
英文关键词: Glacial landforms ; SOC and SOC fractions ; Nitrogen ; Cs-137 ; NDVI ; Glacier retreat
WOS关键词: PARTICLE-SIZE FRACTIONS ; ORGANIC-MATTER ; TROPICAL ANDES ; CLIMATE-CHANGE ; MARITIME ANTARCTICA ; UNCULTIVATED SOILS ; RADIOCARBON-DATES ; CARBON STORAGE ; RETREAT ; ICE
WOS学科分类: Environmental Sciences
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

The present dominant trend of retreating and shrinking glaciers is leading to the formation of new soil in proglacial zones. The Cordillera Blanca located in the Peruvian Andes includes the Lake Paron catchment known for the Artesonraju Glacier and its rapid retreat, forming the largest proglacial lake in the region. This work aims to gain knowledge of soil and vegetation development on the most representative proglacial landforms existing in the Paron catchment. Previous research in proglacial environments suggests that soil properties might indicate different ages of ice retreat besides the normalised difference vegetation index (NDVI), which is known to be a powerful tool for assessing vegetation development. In the area surrounding Lake Paron up to the glacier tongue, an altitudinal transect (4200-4700 m a.s.l.) was established for sampling topsoils. A total of 40 surface soil samples (0-3 cm) were collected from the main glacial landforms, moraines, colluvium, glacio-fluvial terraces and alluvial fans, developed after different stages of glacier retreat. Soil organic carbon (SOC) and SOC fractions (active and stable), total nitrogen (TN) and Cs-137 were analysed. A multitemporal analysis of NDVI was performed to assess the vegetation dynamics in the Paron catchment and over the different glacial landforms over time (1987-2018). The NDVI increase in recent decades indicates an expansion of vegetation cover and density. We compared NDVI values with the SOC and TN content to assess the relationships with vegetation growth in mountain soils. NDVI and the distribution of SOC and TN content show a positive correlation between vegetation evolution and the enrichment in soil nutrients that are more abundant in older moraines in coincidence with highest NDVI. These results outline the effect of shrinking mountain glaciers on generating new soils in parallel with the growth of vegetation. (C) 2018 Elsevier B.V. All rights reserved.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/130000
Appears in Collections:气候减缓与适应

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作者单位: 1.CSIC, Spanish Natl Res Council EEAD, Estn Expt Aula Dei, Ave Montanana 100, Zaragoza 50059, Spain
2.Catholic Univ Louvain, Georges Lemaitre Ctr Earth & Climate Res Earth &, Louvain La Neuve, Belgium
3.Soil & Water Management & Crop Nutr Lab, Joint FAO IAEA Div Nucl Tech Food & Agr, Seibersdorf, Austria

Recommended Citation:
Lizaga, Ivan,Gaspar, Leticia,Quijano, Laura,et al. NDVI, Cs-137 and nutrients for tracking soil and vegetation development on glacial landforms in the Lake Paron Catchment (Cordillera Blanca, Peru)[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019-01-01,651:250-260
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