کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5751302 1619701 2017 8 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Short CommunicationSpatial and temporal patterns of soil water storage and vegetation water use in humid northern catchments
ترجمه فارسی عنوان
ارتباط کوتاه ارتباطات فضایی و زمانی از ذخیره آب های زیرزمینی و استفاده از آب های گیاهی در نواحی مرطوب نواحی شمالی
کلمات کلیدی
استفاده از آب گیاهی، ذخیره آب خاک، ایزوتوپها،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Plant-soil-water interactions in the temperate humid North are relatively unknown.
- Stable isotopes of soil and vegetation water revealed spatio-temporal patterns.
- In contrast to other biomes, we found little separation between soil water sources.
- Vegetation sources were constant temporally, but variable with landscape position.

Using stable isotope data from soil and vegetation xylem samples across a range of landscape positions, this study provides preliminary insights into spatial patterns and temporal dynamics of soil-plant water interactions in a humid, low-energy northern environment. Our analysis showed that evaporative fractionation affected the isotopic signatures in soil water at shallow depths but was less marked than previously observed in other environments. By comparing the temporal dynamics of stable isotopes in soil water mainly held at suctions around and below field capacity, we found that these waters are not clearly separated. The study inferred that vegetation water sources at all sites were relatively constant, and most likely to be in the upper profile close to the soil/atmosphere interface. The data analyses also suggested that both vegetation type and landscape position, including soil type, may have a strong influence on local water uptake patterns, although more work is needed to explicitly identify water sources and understand the effect of plant physiological processes on xylem isotopic water signatures.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 595, 1 October 2017, Pages 486-493
نویسندگان
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