Distribution characteristics of residual film over a cotton field under long-term film mulching and drip irrigation in an oasis agroecosystem

Huaijie He, Zhenhua Wang, Li Guo, Xurong Zheng, Jinzhu Zhang, Wenhao Li, Bihang Fan

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Without an efficient mulch film recovery, the residual plastic film (RPF) causes pollution hazards to agronomic systems and natural environments. Here, we examined the distribution characteristics of RPF in the topsoils (0–40 cm) in an oasis agroecosystem in Northwest China. After cotton harvest in 2016, we collected 2304 soil samples from six cotton fields with different years of continuous mulching management (5, 9, 11, 13, 15 and 19 a). A total of 2471 pieces of RPF were separated and weighted. The weight of each RPF fragment was calibrated by its size measured in digital images. Our results showed that the amount of RPF ranged from 121.85 to 352.38 kg ha–1 across the six fields, remarkably exceeding the national standard of China (75 kg ha–1). The occurrence frequency of RPF fragments maximized at 5–15 cm depth. With the increase in soil depth, RPF fragments became smaller, and their total mass decreased linearly. After the constant mulching practice, RPF accumulated at an annual rate of 15.69 kg ha−1, mainly occurring at 0–30 cm depth. The accumulation of the larger RPF fragments (>25 mg per piece) primarily took place from 5 to 15 years after mulching started. It took over 15 years for the larger RPF fragments to degrade into smaller ones (<25 mg per piece), which accounted for 65% of the total number of RPF fragments in the field with 19-year of mulching. RPF fragments with a weight larger than 100 mg mostly concentrated at the surface (0–10 cm), whereas, the other smaller RPF fragments showed an evident downward migration. That said, with the constant mulching management, RPF pieces became more fragmented and distributed deeper, making mulch film recovery more challenging. To the best of our knowledge, this is the first time that the dynamics of RPF distribution in the soil profile after long-term mulching have been characterized. If the current mulching method continues, the accumulated RPF is going to cause severe soil pollution and risk the sustainability of the oasis agroecosystem.

Original languageEnglish (US)
Pages (from-to)194-203
Number of pages10
JournalSoil and Tillage Research
Volume180
DOIs
StatePublished - Aug 1 2018

Fingerprint

mulching
plastic film
drip irrigation
oases
oasis
agricultural ecosystem
microirrigation
agroecosystems
films (materials)
cotton
plastic
distribution
mulch
China
digital images
soil pollution

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Soil Science
  • Earth-Surface Processes

Cite this

He, Huaijie ; Wang, Zhenhua ; Guo, Li ; Zheng, Xurong ; Zhang, Jinzhu ; Li, Wenhao ; Fan, Bihang. / Distribution characteristics of residual film over a cotton field under long-term film mulching and drip irrigation in an oasis agroecosystem. In: Soil and Tillage Research. 2018 ; Vol. 180. pp. 194-203.
@article{3b3ae3e4aaed4f81a1a25c9cc7114641,
title = "Distribution characteristics of residual film over a cotton field under long-term film mulching and drip irrigation in an oasis agroecosystem",
abstract = "Without an efficient mulch film recovery, the residual plastic film (RPF) causes pollution hazards to agronomic systems and natural environments. Here, we examined the distribution characteristics of RPF in the topsoils (0–40 cm) in an oasis agroecosystem in Northwest China. After cotton harvest in 2016, we collected 2304 soil samples from six cotton fields with different years of continuous mulching management (5, 9, 11, 13, 15 and 19 a). A total of 2471 pieces of RPF were separated and weighted. The weight of each RPF fragment was calibrated by its size measured in digital images. Our results showed that the amount of RPF ranged from 121.85 to 352.38 kg ha–1 across the six fields, remarkably exceeding the national standard of China (75 kg ha–1). The occurrence frequency of RPF fragments maximized at 5–15 cm depth. With the increase in soil depth, RPF fragments became smaller, and their total mass decreased linearly. After the constant mulching practice, RPF accumulated at an annual rate of 15.69 kg ha−1, mainly occurring at 0–30 cm depth. The accumulation of the larger RPF fragments (>25 mg per piece) primarily took place from 5 to 15 years after mulching started. It took over 15 years for the larger RPF fragments to degrade into smaller ones (<25 mg per piece), which accounted for 65{\%} of the total number of RPF fragments in the field with 19-year of mulching. RPF fragments with a weight larger than 100 mg mostly concentrated at the surface (0–10 cm), whereas, the other smaller RPF fragments showed an evident downward migration. That said, with the constant mulching management, RPF pieces became more fragmented and distributed deeper, making mulch film recovery more challenging. To the best of our knowledge, this is the first time that the dynamics of RPF distribution in the soil profile after long-term mulching have been characterized. If the current mulching method continues, the accumulated RPF is going to cause severe soil pollution and risk the sustainability of the oasis agroecosystem.",
author = "Huaijie He and Zhenhua Wang and Li Guo and Xurong Zheng and Jinzhu Zhang and Wenhao Li and Bihang Fan",
year = "2018",
month = "8",
day = "1",
doi = "10.1016/j.still.2018.03.013",
language = "English (US)",
volume = "180",
pages = "194--203",
journal = "Soil and Tillage Research",
issn = "0167-1987",
publisher = "Elsevier",

}

Distribution characteristics of residual film over a cotton field under long-term film mulching and drip irrigation in an oasis agroecosystem. / He, Huaijie; Wang, Zhenhua; Guo, Li; Zheng, Xurong; Zhang, Jinzhu; Li, Wenhao; Fan, Bihang.

In: Soil and Tillage Research, Vol. 180, 01.08.2018, p. 194-203.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Distribution characteristics of residual film over a cotton field under long-term film mulching and drip irrigation in an oasis agroecosystem

AU - He, Huaijie

AU - Wang, Zhenhua

AU - Guo, Li

AU - Zheng, Xurong

AU - Zhang, Jinzhu

AU - Li, Wenhao

AU - Fan, Bihang

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Without an efficient mulch film recovery, the residual plastic film (RPF) causes pollution hazards to agronomic systems and natural environments. Here, we examined the distribution characteristics of RPF in the topsoils (0–40 cm) in an oasis agroecosystem in Northwest China. After cotton harvest in 2016, we collected 2304 soil samples from six cotton fields with different years of continuous mulching management (5, 9, 11, 13, 15 and 19 a). A total of 2471 pieces of RPF were separated and weighted. The weight of each RPF fragment was calibrated by its size measured in digital images. Our results showed that the amount of RPF ranged from 121.85 to 352.38 kg ha–1 across the six fields, remarkably exceeding the national standard of China (75 kg ha–1). The occurrence frequency of RPF fragments maximized at 5–15 cm depth. With the increase in soil depth, RPF fragments became smaller, and their total mass decreased linearly. After the constant mulching practice, RPF accumulated at an annual rate of 15.69 kg ha−1, mainly occurring at 0–30 cm depth. The accumulation of the larger RPF fragments (>25 mg per piece) primarily took place from 5 to 15 years after mulching started. It took over 15 years for the larger RPF fragments to degrade into smaller ones (<25 mg per piece), which accounted for 65% of the total number of RPF fragments in the field with 19-year of mulching. RPF fragments with a weight larger than 100 mg mostly concentrated at the surface (0–10 cm), whereas, the other smaller RPF fragments showed an evident downward migration. That said, with the constant mulching management, RPF pieces became more fragmented and distributed deeper, making mulch film recovery more challenging. To the best of our knowledge, this is the first time that the dynamics of RPF distribution in the soil profile after long-term mulching have been characterized. If the current mulching method continues, the accumulated RPF is going to cause severe soil pollution and risk the sustainability of the oasis agroecosystem.

AB - Without an efficient mulch film recovery, the residual plastic film (RPF) causes pollution hazards to agronomic systems and natural environments. Here, we examined the distribution characteristics of RPF in the topsoils (0–40 cm) in an oasis agroecosystem in Northwest China. After cotton harvest in 2016, we collected 2304 soil samples from six cotton fields with different years of continuous mulching management (5, 9, 11, 13, 15 and 19 a). A total of 2471 pieces of RPF were separated and weighted. The weight of each RPF fragment was calibrated by its size measured in digital images. Our results showed that the amount of RPF ranged from 121.85 to 352.38 kg ha–1 across the six fields, remarkably exceeding the national standard of China (75 kg ha–1). The occurrence frequency of RPF fragments maximized at 5–15 cm depth. With the increase in soil depth, RPF fragments became smaller, and their total mass decreased linearly. After the constant mulching practice, RPF accumulated at an annual rate of 15.69 kg ha−1, mainly occurring at 0–30 cm depth. The accumulation of the larger RPF fragments (>25 mg per piece) primarily took place from 5 to 15 years after mulching started. It took over 15 years for the larger RPF fragments to degrade into smaller ones (<25 mg per piece), which accounted for 65% of the total number of RPF fragments in the field with 19-year of mulching. RPF fragments with a weight larger than 100 mg mostly concentrated at the surface (0–10 cm), whereas, the other smaller RPF fragments showed an evident downward migration. That said, with the constant mulching management, RPF pieces became more fragmented and distributed deeper, making mulch film recovery more challenging. To the best of our knowledge, this is the first time that the dynamics of RPF distribution in the soil profile after long-term mulching have been characterized. If the current mulching method continues, the accumulated RPF is going to cause severe soil pollution and risk the sustainability of the oasis agroecosystem.

UR - http://www.scopus.com/inward/record.url?scp=85044162648&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044162648&partnerID=8YFLogxK

U2 - 10.1016/j.still.2018.03.013

DO - 10.1016/j.still.2018.03.013

M3 - Article

AN - SCOPUS:85044162648

VL - 180

SP - 194

EP - 203

JO - Soil and Tillage Research

JF - Soil and Tillage Research

SN - 0167-1987

ER -