بررسی سلامت خاک در بوم‌سازگان ناپایدار شمال شهر گرگان

بامری, ابوالفضل

doi:10.22034/jewe.2021.273692.1522

نوع مقاله : مقاله کوتاه

نویسنده

ابوالفضل بامری

مربی، عضو هیئت علمی گروه مهندسی خاک، دانشکده آب و خاک، دانشگاه زابل، زابل، ایران

https://doi.org/10.22034/jewe.2021.273692.1522

چکیده

این پژوهش با هدف مطالعه اثر تغییر کاربری بر‌ سلامت و کیفیت خاک اراضی شیب‌دار جنوب شهر گرگان انجام شد. نمونه‌برداری در تیرماه 1398 بهدلیل تخریب شدید اراضی تنها از 2 موقعیت شانه شیب و شیب پشتی و به‌صورت کاملاً تصادفی از عمق cm 20-0 خاک جنگل و زمین کشت‌شده مجاور انجام شد. خصوصیات مورد ارزیابی شامل درصد کربن آلی خاک، درصد اجزای بافت خاک (شن، سیلت و رس)، وزن مخصوص ظاهری خاک، درصد آهک معادل خاک، واکنش خاک، مقادیر عناصر پرمصرف (ازت، فسفر، پتاسیم) و ظرفیت تبادل کاتیونی به‌عنوان شاخص‌های کیفیت خاک بودند. نتایج نشان داد که بیشترین ضریب تغییرات در نتیجه تغییر کاربری مربوط به پارامتر درصد کربن آلی خاک بوده است. تجزیه واریانس و مقایسه میانگین حاکی از آن بود که تغییر کاربری از جنگل به کشاورزی موجب کاهش معنی‌دار کیفیت خاک در تمامی پارامترهای مورد ارزیابی به‌استثناء فسفر قابل‌جذب شده است. همچنین بررسی درصد کربن آلی خاک به‌عنوان مهم‌ترین شاخص کیفیت خاک نشان داد که این پارامتر با میانگین 07/6% در کاربری جنگل و میانگین 59/0% در کاربری زراعی با کاهش 90% در نتیجه تغییر کاربری روبرو شده است.

کلیدواژه‌ها

موضوعات

فیزیک و حفاظت خاک

عنوان مقاله [English]

Evaluation of Soil Health in the Unstable Ecosystem of Gorgan City

نویسنده [English]

Abolfazl Bameri

Lecturer, Department of Soil Engineering, Faculty of Water and Soil, University of Zabol, Zabol, Iran

چکیده [English]

The aim of this study was to assess the effect of land use change on health and soil quality of sloping lands in the south of Gorgan. Sampling was performed in July 2019 from only 2 shoulder slope and back slope positions and completely randomly from a depth of 0-20 cm of forest soil and adjacent cultivated land. The properties evaluated include percentage of soil organic carbon, percentage of soil texture components (sand, silt and clay), specific gravity of soil, percentage of soil equivalent lime, soil reaction, amounts of highly consumed elements (nitrogen, phosphorus, potassium) and cation exchange capacity as indicators of soil quality. The results showed that the highest coefficient of change as a result of land use change was related to the parameter of soil organic carbon percentage. Analysis of variance and mean comparison showed that the change of landuse from forest to agriculture has significantly reduced soil quality in all evaluated parameters except adsorbable phosphorus. Moreover, the study of soil organic carbon content as the most important indicator of soil quality showed that this parameter with an average of 6.07% in forest use and an average of 0.59% in agricultural use with a decrease of 90% as a result of land use change.

کلیدواژه‌ها [English]

Golestan Province
Land Use Change
Soil Quality
Soil Organic Carbon

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محیط زیست و مهندسی آب

بررسی سلامت خاک در بوم‌سازگان ناپایدار شمال شهر گرگان

مراجع

مراجع

دوره 8، شماره 1
فروردین 1401
صفحه 251-261

بررسی سلامت خاک در بوم‌سازگان ناپایدار شمال شهر گرگان

مراجع

مراجع

دوره 8، شماره 1فروردین 1401صفحه 251-261

دوره 8، شماره 1
فروردین 1401
صفحه 251-261