1 Ocak 2020 Dergi makalesi Açık Erişim

Kumari, Nikul; Saco, Patricia M.; Rodriguez, Jose F.; Johnstone, Samuel A.; Srivastava, Ankur; Chun, Kwok P.; Yetemen, Omer

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      {
        "affiliation": "Univ Newcastle, Discipline Civil Surveying & Environm Engn, Callaghan, NSW, Australia", 
        "name": "Kumari, Nikul"
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      {
        "affiliation": "Univ Newcastle, Discipline Civil Surveying & Environm Engn, Callaghan, NSW, Australia", 
        "name": "Saco, Patricia M."
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      {
        "affiliation": "Univ Newcastle, Discipline Civil Surveying & Environm Engn, Callaghan, NSW, Australia", 
        "name": "Rodriguez, Jose F."
      }, 
      {
        "affiliation": "US Geol Survey, Geosci & Environm Change Sci Ctr, Denver, CO USA", 
        "name": "Johnstone, Samuel A."
      }, 
      {
        "affiliation": "Univ Newcastle, Discipline Civil Surveying & Environm Engn, Callaghan, NSW, Australia", 
        "name": "Srivastava, Ankur"
      }, 
      {
        "affiliation": "Hong Kong Baptist Univ, Dept Geog, Hong Kong, Peoples R China", 
        "name": "Chun, Kwok P."
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      {
        "name": "Yetemen, Omer"
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    "description": "Our current understanding of semiarid ecosystems is that they tend to display higher vegetation greenness on polar-facing slopes (PFS) than on equatorial-facing slopes (EFS). However, recent studies have argued that higher vegetation greenness can occur on EFS during part of the year. To assess whether this seasonal reversal of aspect-driven vegetation is a common occurrence, we conducted a global-scale analysis of vegetation greenness on a monthly time scale over an 18-year period (2000-2017). We examined the influence of climate seasonality on the normalized difference vegetation index (NDVI) values of PFS and EFS at 60 different catchments with aspect-controlled vegetation located across all continents except Antarctica. Our results show that an overwhelming majority of sites (70%) display seasonal reversal, associated with transitions from water-limited to energy-limited conditions during wet winters. These findings highlight the need to consider seasonal variations of aspect-driven vegetation patterns in ecohydrology, geomorphology, and Earth system models.", 
    "doi": "10.1029/2020GL088918", 
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    "journal": {
      "issue": "15", 
      "title": "GEOPHYSICAL RESEARCH LETTERS", 
      "volume": "47"
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    "publication_date": "2020-01-01", 
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    "title": "The Grass Is Not Always Greener on the Other Side: Seasonal Reversal of Vegetation Greenness in Aspect-Driven Semiarid Ecosystems"
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