کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8893855 1629384 2019 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Soil organic carbon storage as a key function of soils - A review of drivers and indicators at various scales
ترجمه فارسی عنوان
ذخایر کربن آلاینده خاک به عنوان یک عامل کلیدی خاک - بررسی رانندگان و شاخص ها در مقیاس های مختلف
کلمات کلیدی
کانی شناسی خاک رس، سطح خاص، اکسید فلزی، میکروارگانیسم ها، فون خاک، تجمع خاک، بافت خاک، نوع خاک، گیاهان طبیعی، استفاده و مدیریت زمین، توپوگرافی، مواد مادرانه، آب و هوا،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
The capacity of soils to store organic carbon represents a key function of soils that is not only decisive for climate regulation but also affects other soil functions. Recent efforts to assess the impact of land management on soil functionality proposed that an indicator- or proxy-based approach is a promising alternative to quantify soil functions compared to time- and cost-intensive measurements, particularly when larger regions are targeted. The objective of this review is to identify measurable biotic or abiotic properties that control soil organic carbon (SOC) storage at different spatial scales and could serve as indicators for an efficient quantification of SOC. These indicators should enable both an estimation of actual SOC storage as well as a prediction of the SOC storage potential, which is an important aspect in land use and management planning. There are many environmental conditions that affect SOC storage at different spatial scales. We provide a thorough overview of factors from micro-scales (particles to pedons) to the global scale and discuss their suitability as indicators for SOC storage: clay mineralogy, specific surface area, metal oxides, Ca and Mg cations, microorganisms, soil fauna, aggregation, texture, soil type, natural vegetation, land use and management, topography, parent material and climate. As a result, we propose a set of indicators that allow for time- and cost-efficient estimates of actual and potential SOC storage from the local to the regional and subcontinental scale. As a key element, the fine mineral fraction was identified to determine SOC stabilization in most soils. The quantification of SOC can be further refined by including climatic proxies, particularly elevation, as well as information on land use, soil management and vegetation characteristics. To enhance its indicative power towards land management effects, further “functional soil characteristics”, particularly soil structural properties and changes in the soil microbial biomass pool should be included in this indicator system. The proposed system offers the potential to efficiently estimate the SOC storage capacity by means of simplified measures, such as soil fractionation procedures or infrared spectroscopic approaches.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoderma - Volume 333, 1 January 2019, Pages 149-162
نویسندگان
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