کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8365222 1542619 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of earthworm species on soil behaviour depend on land use
ترجمه فارسی عنوان
اثرات گونه های کرم خاکی بر رفتار خاک بستگی به کاربری زمین دارد
کلمات کلیدی
بوم شناسی کرم خاکی، مهندسین اکوسیستم خاک، سازه های خاک، کربن آلاینده خاک پایداری ساختاری خاک نزدیک به طیف سنجی مادون قرمز، کانی سازی کربن،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش خاک شناسی
چکیده انگلیسی
This work is concerned with the effect of five earthworm species on short-term soil dynamics through carbon (C) mineralisation and large soil aggregate characteristics (production, stability, organic matter content and composition) in laboratory experiments. We hypothesised that the influence of earthworms on soil behaviour depends on individual species and land use history. Substrates were a sequence of three similar luvisols that had been subjected to different land use histories and represented increasing C contents from 10 mg kg−1 (cropped soil), to 20 mg kg−1 (5-year-old pasture soil) and 33 mg kg−1 (permanent pasture soil). We found that relative C mineralisation was slower in pasture than in cropped soils, which can be explained by differences in the physical protection of soil organic matter (SOM). Land use history influenced (i) the amount of large macro-aggregate production through earthworm behaviour (casting activity), and (ii) the size distribution of water stable soil fractions within the large macro-aggregate produced. No effect of earthworm species on SOM composition was observed with near infrared spectrometry indicating that the chemistry of large macro-aggregates was mainly driven by land use type. Earthworm species had more pronounced effects on physical (large aggregate production and stability) than on biological (C mineralisation promotion) or biochemical (SOM composition) features. This paper shows that, although earthworm effects on soil processes are now obvious, a number of factors may interact in such complex systems so that we should hesitate to make generalisations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 65, October 2013, Pages 264-273
نویسندگان
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