کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5742775 1617773 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interactions between earthworm burrowing, growth of a leguminous shrub and nitrogen cycling in a former agricultural soil
ترجمه فارسی عنوان
تعاملات بین کرم خاکی، رشد یک بوته حبوبات و نیتروژن دوچرخه سواری در یک زمین کشاورزی سابق
کلمات کلیدی
کیفیت خاک، لوبیا، نیتروژن، گاز گلخانه ای، گره زدن ریشه، خدمات محیط زیستی،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


- NZ endemic soil biota inhabit the margins of profoundly modified agricultural soils.
- Biotic interactions modify and are influenced by biochemical processes in this soil.
- Native earthworms and N-fixing plants variably influence nitrogen mobility in soil.
- Soil-soil biota interactions impact nitrate leaching and greenhouse gas emissions.

Attempts to restore native biodiversity into agricultural landscapes in New Zealand appear to be compromised both by soil nitrogen enrichment from farming and N-leakage to the wider environment. We investigated whether interactions between native earthworms and a native rhizobium-inoculated leguminous shrub (Sophora microphylla) have a measurable effect on the mobility of nitrogen in an agricultural soil that has been nitrogen-enriched and colonised by exotic earthworms. Plants grew better in the presence of both native and exotic soil-burrowing earthworms. Rates of root nodulation were considerably enhanced in the presence of the native megascolecid anecic earthworm Maoridrilus transalpinus. This species consumed more organic matter in the presence of inoculated plants whilst marginally lowering soil pH and enhancing critical concentrations of nitrate, but also reducing nitrous oxide emissions. Earthworms raised dehydrogenase enzyme activity and microbial activity in soil, but this was not commensurate with rates of nodulation. Our results show that some combination of earthworm-mediated soil aeration, modification of moisture conditions in the rhizosphere and drilosphere, and comminution of organic matter, modify microbial communities and significantly impact the N cycle.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 110, February 2017, Pages 79-87
نویسندگان
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