تأثیرپذیری ویژگی‌های خاک از لاشبرگ گیاه Ziziphus spina-christi در رویشگاه صحارا-سیندی | ||
| خشک بوم | ||
| دوره 12، شماره 1، اردیبهشت 1401، صفحه 159-170 اصل مقاله (806.88 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.29252/aridbiom.2023.19813.1927 | ||
| نویسندگان | ||
| بنفشه یثربی* 1؛ محمد متینی‌زاده2 | ||
| 1استادیار، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان خوزستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، ایران | ||
| 2دانشیار، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، ایران | ||
| چکیده | ||
| در بسیاری از طرح‌های احیای اراضی، به خصوص در مناطق خشک که با محدودیت منابع روبرو هستند، توجه به نوع گونه و اثر آن بر ویژگی‌های کیفی خاک موجب پایداری طولانی مدت عرصه‌های احیایی میشود. هدف این مطالعه بررسی تأثیر درخت کنار بر شاخص‌های فیزیکوشیمیایی، میکروبیولوژی و نسبت‌های مواد مغذی خاک در رویشگاه کنار در ناحیه رویشی صحارا-سیندی در استان خوزستان است. برای این منظور، 15 نمونه خاک ترکیبی به طور تصادفی از خاک سطحی پای درخت کنار و 15 نمونه ترکیبی از مناطق شاهد در مکان‌هایی که درخت کنار حضور ندارد، برداشت گردید. ویژگی‌هایی مانند بافت خاک، اسیدیته، کربن آلی، ماده آلی، نیتروژن، فسفر، پتاسیم، کلسیم، منیزیم، سدیم، بیکربنات، تنفس پایه، تنفس برانگیخته، بیوماس میکروبی کربن و پتانسیل نیتریفیکاسیون در نمونه‌ها اندازه‌گیری شد. پس از انجام پیش نیازهای دو گروه نمونه مانند تست نرمالیته و همگنی واریانس‌ها، آزمون t مستقل برای بررسی وجود تفاوت معنی‌دار بین دو گروه اجرا گردید. نتایج نشان داد که در نمونه‌های خاک پای درخت کنار از نظر کربن آلی 41 درصد، مواد آلی 47 درصد، نیتروژن 69 درصد، نسبت کربن به پتاسیم 24 درصد، نسبت نیتروژن به پتاسیم 42 درصد نسبت به منطقه شاهد که کنار وجود ندارد، رشد نشان می‌دهد. در گروه شاخص‌های بیولوژیک نیز نمونه‌های پای کنار از نظر تنفس پایه 91 درصد و از نظر زیتوده میکروبی کربن 90 درصد نسبت منطقه شاهد رشد نشان می‌دهد که حاکی از افزایش سرعت معدنی‌شدن مواد آلی و سلامت خاک است. در خصوص تعادل یون‌های دو ظرفیتی و تک ظرفیتی در فاز تبادلی و محلول نتایج نشان داد که با افزایش یک واحد در SAR میزان ESR در نمونه‌های شاهد به نسبت نمونه‌های پای کنار 6/1 برابر افزایش می‌یابد. این امر بدان معناست که با افزایش یون‌های دو ظرفیتی در فاز محلول، جایگاه‌های تبادلی در مناطقی که درخت کنار حضور ندارد با سرعت بیشتری توسط یون سدیم اشغال میشود و خاک با سرعت بیشتری به سمت سدیمی شدن پیش می‌رود. با توجه به نتایج فوق می‌توان گفت گونة کنار همزمان باعث احیای خاک و افزایش حاصلخیزی و سلامت آن از طریق بهبود شرایط میکروبی میشود. | ||
| کلیدواژه‌ها | ||
| کنار؛ ناحیه رویشی صحارا-سیندی؛ ویژگی‌های بیولوژیک؛ نسبت‌های مواد مغذی؛ خوزستان | ||
| عنوان مقاله [English] | ||
| Influence of Ziziphus spina-christi Residue on soil characteristics in Sahara-Sindy Ecosystem | ||
| نویسندگان [English] | ||
| Banafshe Yasrebi1؛ Mohamad Matinizadeh2 | ||
| 1Assistant Professor, Natural Resources Research Department, Khuzestan Agricultural and Natural Resources, Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran | ||
| 2Associate Professor, Forest and Rangeland Research Institute, AREEO, Tehran, Iran | ||
| چکیده [English] | ||
| The health of the soil, as an ecosystem, influences the health of other ecosystems. The most essential factors associated to soil quality are its physical, chemical, and biological features, as well as its fertility. However, it is influenced by the type of plant that grows in it. Paying attention to the type of species and their effects on the qualitative characteristics of the soil as a management strategy can help maintain the quantity and long-term stability of restored areas in arid and desert areas in many land restoration projects, particularly in arid lands with limited resources. The purpose of this research is to look into the effect of the Ziziphus tree on physicochemical, microbiological, and stoichiometric ratios of soil in the arid region surrounding the Persian Gulf in the province of Khuzestan. For this purpose, 15 mixed soil samples were randomly selected from the surface soil at the foot of the Ziziphus tree, and 15 mixed samples were selected from the control areas in locations where the Ziziphus tree is not present. The characteristics of the soil samples were the same, including texture, acidity, organic carbon, organic matter, nitrogen, phosphorus, and potassium. The independent t-test was carried out to determine whether there was a significant difference between the two sample groups once the prerequisites for the two sample groups, such as the normality test and the homogeneity of variances, were completed. The results showed that in the Ziziphus samples, organic carbon was 41%, organic matter 47%, nitrogen 69%, C:K ratio 24%, and N:K ratio was 42% higher than in the control area with no Ziziphus. In terms of biological indicators, the Ziziphus samples rose 91% in basic respiration and 90% in microbial biomass carbon, indicating an increase in organic matter mineralization and soil health. In terms of the balance of ions in the exchange phase and solution. The results demonstrate that an increase of one unit in SAR raises the ESR level in the control samples by 1.6 times, compared to the side samples. This indicates that as the concentration of divalent ions in the solution phase increases, the exchange sites where the tree is absent, sodium ions will fill those spaces more quickly. According to the above findings, it can be concluded that using Ziziphus in land restoration projects improves microbiological conditions while also restoring the soil and enhancing its fertility and health. | ||
| کلیدواژه‌ها [English] | ||
| Ziziphus, Sahara-Sindy zone, biological characteristics, stoichiometric ratios, Khuzestan, Iran | ||
| مراجع | ||
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