نگاهی به عوامل محیطی مؤثر بر فرسایش خندقی در نواحی حساسِ شهرستان گچساران

نوع مقاله : مقاله ترویجی

نویسندگان

• ایمان صالح ¹
• سید مسعود سلیمانپور ²
• امید رحمتی ³
• مجید خزایی ¹
• صمد شادفر ⁴

¹ بخش تحقیقات جنگل‌ها، مراتع و آبخیزداری، مرکز تحقیقات و آموزش کشــاورزی و منابع طبیعی استان کهگیلویه و بویراحمد، سازمان تحقیقات،

² بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشــاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی،

³ بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشــاورزی و منابع طبیعی استان کردستان، سازمان تحقیقات، آموزش و ترویج کشاورزی،

⁴ پژوهشکده حفاظت خاک و آبخیزداری، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

کلیدواژه‌ها

• جهت شیب
• شاخص انحنای دامنه
• شاخص رطوبت توپوگرافی
• فاصله از آبراهه

موضوعات

• علوم مرتبط با آبخیزداری در ناحیه رویشی زاگرس و مناطق خشک و نیمه خشک کشور

An overview of environmental factors influencing gully erosion in susceptible areas of Gachsaran County in Iran

Iman Saleh¹*, Seyed Masoud Soleimanpour², Omid Rahmati³, Majid Khazaei⁴, Samad Shadfar⁵

[1]*- Assistant Professor, Forest, Rangeland and Watershed Research Department, Kohgiluyeh and Boyer-Ahmad Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Yasuj, Iran. Email: e.saleh@areeo.ac.ir | ORCID ID: 0000-0002-9409-7020

2- Associate Professor, Soil Conservation and Watershed Management Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran

3- Assistant Professor, Soil Conservation and Watershed Management Research Department, Kurdistan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sanandaj, Iran

4- Assistant Professor, Forest, Rangeland and Watershed Research Department, Kohgiluyeh and Boyer-Ahmad Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Yasuj, Iran

5- Associate Professor, Soil Conservation and Watershed Management Research Institute (SCWMRI), Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

Received: 26/May/2026     Revised: 17/June/2026     Accepted: 22/June/2026

Abstract

Soil erosion is one of the major factors contributing to reductions in soil depth and volume, soil degradation, and loss of soil fertility. Direct measurement of gully erosion over large areas is not feasible; therefore, identifying the factors influencing its occurrence and mapping areas susceptible to gully erosion are important tools for understanding and controlling this phenomenon. The first step in mapping susceptibility to gully erosion is to identify and collect information on the factors that play a significant role in its occurrence. In the present study, after identifying the environmental factors affecting the occurrence of gully erosion in the Abgandi watershed, Gachsaran, spatial layers corresponding to each factor were prepared. The environmental factors influencing the formation and occurrence of gully erosion in the study area included elevation, slope, slope aspect, lithology, land use, distance from streams, topographic wetness index (TWI), and slope curvature index. Spatial maps of all these factors were prepared for the Abgandi watershed. The resulting maps can be highly useful for identifying areas susceptible to gully erosion and may serve as valuable tools for natural resources experts in Gachsaran County. Furthermore, to control and prevent gully erosion, practical management measures are recommended, including preventing overgrazing, maintaining vegetation cover in areas susceptible to gully erosion, and preventing inappropriate land-use changes, particularly the conversion of rangelands and natural lands to agricultural land in areas with steep slopes.

Keywords: Distance to streams, slope aspect, slope curvature index, Topographic Wetness Index (TWI).

Citation:

Saleh, I., Soleimanpour, S.M., Rahmati, O., Khazaei, M., Shadfar, S. 2026. An overview of environmental factors influencing gully erosion in susceptible areas of Gachsaran County in Iran. Zagros Ecosystem and Sustainable Development, 1(2): 72-79.

DOI: 10.22034/ZAGROS.2026.372934.1021

URL: https://zagros.areeo.ac.ir/article_136040.html

صالح، ا.، سلیمان‌پور، س.م.، رحمتی، ا.، خزایی، م.، شادفر، ص. ۱۴۰۵. نگاهی به عوامل محیطی مؤثر بر فرسایش خندقی در نواحی حساس شهرستان گچساران. زیست‌بوم و توسعه پایدار زاگرس، 1(2): 79-72.