حساسیت خاک ها با بافت متفاوت به فرسایش پاشمانی تحت تأثیر شدت باران و محتوای رطوبتی پیشین

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکترا دانشگاه زنجان

2 دانشیار دانشگاه زنجان

چکیده

�اط با شدت باران و محتفرسایش پاشمانی بهعنوان نخستین فرآیند فرسایش خاک شناخته میشود که نتیجه متلاشی شدن سطح خاک توسط قطرات باران است. فرسایش پاشمانی فرآیندی پیچیده شامل جدا شدن ذرات خاک توسط قطرات باران و به دنبال آن انتقال پاشمانی بخشی از ذرات جدا شده است. کمیسازی فرسایش پاشمانی در خاکها با بافت مختلف برای ترکیبهای گوناگونی از شدت باران و محتوای رطوبت پیشین )(Antecedent moisture content, AMC بهمنظور درک فرآیندهای فرسایش پاشمانی ضروری است. پژوهشهای فرسایش پاشمانی در شرایط مزرعه اغلب پرهزینه و زمانبر است. شبیهسازی باران بهطور وسیع بهعنوان روشی مؤثر برای برآورد فرسایش پاشمانی در طیف وسیعی از عوامل مرتبط با فرسایش بارانی بهکار گرفته شده است. این پژوهش بهمنظور بررسی فرسایش پاشمانی در ارت

کلیدواژه‌ها

عنوان مقاله [English]

The susceptibility of different texture soils to splash erosion under different rainfall intensity and antecedent water content

نویسندگان [English]

  • Ali baliani 1
  • Alireza vaezi 2

1 zanjan university

2 zanjan university

چکیده [English]

Splash erosion is recognized as the first stage in a soil erosion process and
results from the soil surface bombing by rain drops. Splash erosion is a complex process including the
detachment of soil particles by raindrops followed by splash transport of a part of the detached particles.
Quantification of splash erosion in the soils with different textures for various combinations of rainfall
intensities and antecedent moisture content (AMC) is essential to understand splash erosion processes.
The investigation on the splash erosion in the field is often expensive and time-consuming. Rainfall
simulation has been used extensively as a cost effective method for soil erosion prediction across a lot of
related factors. This study was conducted to investigate splash erosion in relation to rainfall intensity and
AMC in different soil textures using the simulated rainfalls.

کلیدواژه‌ها [English]

  • Soil splash
  • Soil particles distribution
  • Soil surface properties
  • Geometric particle-size diameter
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