• Effects of Mixed Planting of Green Manure Crops Supplemented with Humic Substance on the Biological Soil Health Indicators of Reclaimed Soils
  • Bumhan Bae*·Hyesun Park·Sua Kang

  • Department of Civil & Environmental Engineering, Gachon University

  • 녹비식물 혼합재배에 휴믹물질 투입이 정화처리토양의 생물학적 토양 건강성 지표에 미치는 영향
  • 배범한*·박혜선·강수아

  • 가천대학교 토목환경공학과

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


The effects of green manure crops, hairy vetch and sesban, supplemented with HS (humic substance) on biological soil health indicators was studied in a pot containing two kinds of reclaimed soil previously contaminated with petroleum hydrocarbons; a soil remediated by land-farming (DDC) and another soil by low-temperature thermal desorption (YJ). Treatments include no plant (C), plants only (H), and plants+2% HS (PH), which were evaluated in a pot containing respective soil. Biological indicators include microbial community analysis as well as soil enzyme activities of dehydrogenase, β-glucosidase, N-acetyl-β-D-glucosaminidase (NAG), acid/alkaline phosphatase, arylsulfatase, and urease. Results showed an increase of enzyme activities in pot soils with plants and even greater in soils with plants+HS. The enzyme activities of DDC soil with plants (DDC_P) and with plants+HS (DDC_PH) increased 1.6 and 3.9 times on average, respectively than those in the control. The enzyme activities YJ soil with plants (YJ_P) and with plant+HS (YJ_PH) increased 1.8 and 3.8 times on average, respectively than those in the control. According to microbial community analysis, the relative abundance of nitrogen-fixing bacteria in DDC and YJ soil was increased from 1.5% to 7% and from 0 to 5%, respectively, after planting hairy vetch and sesban. This study showed that mixed planting of green manure crops with a supplement of humic substance is highly effective for the restoration of biological health indicators of reclaimed soils.

Keywords: Green manure crop, Humic substance, Reclaimed soil, Soil enzyme, Soil health

This Article

  • 2021; 26(5): 49-59

    Published on Oct 31, 2021

  • 10.7857/JSGE.2021.26.5.049
  • Received on Sep 23, 2021
  • Revised on Oct 6, 2021
  • Accepted on Oct 19, 2021

Correspondence to

  • Bumhan Bae
  • Department of Civil & Environmental Engineering, Gachon University

  • E-mail: bhbae@gachon.ac.kr