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Understanding Mid-Term Immobilization Patterns of Soluble Pb in Soils Treated with Natural Geo-Sorbents : Laboratory Trial with Ultisols from a Montane Forest, Sri Lanka

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    Journal of Forest and Environmental Science KCI 등재 바로가기
  • 통권
    제41권 제1호 (2025.03)바로가기
  • 페이지
    pp.50-57
  • 저자
    Kasun Lakmini, Niluka Ranasinghe, Rasanjali Jayamuni de Silva, Priyantha Indralal Yapa, Ranmalee Bandara, Mahinda Senevirathne
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A465889

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원문정보

초록

영어
The quick expansion of forest dieback in Horton Plains (HP), a cloud forest in Sri Lanka, is now a major concern. Lead (Pb) accumulated in the forest soil has been identified as one of the major culprits behind the forest dieback in HP. Natural geo-sorbents like biochar plays a vital role in remediating soils contaminated with heavy metals, via the adsorption heavy metals into sorption sites. This research focused on understanding the mid-term immobilization patterns of available Pb in HP soils treated with natural geo-sorbents. The treatments were: (T1) rubber-nut shell biochar (BRS), (T2) rice husk biochar (BHS), (T3) dead wood (from HP) biochar (HPS), and (T4) HP forest soil only (CS). Soil and dead wood were separately collected from HP and taken to a laboratory. All soil samples were spiked to show over 300 ppm of soil available Pb, geo-sorbents added where appropriate, and incubated at room temperature. HP soils were high in soil organic matter (SOM) (13.4%) with low pH (5.4). During the initial 3 months of the experiment, HPS recorded the lowest immobilization compared to BRS and BHS, with the latter having the highest immobilization. Yet, at the end of 18 months, all treatments showed the capacity to almost completely immobilize (∼96%) soil available Pb. As such, it can be concluded that (i) maintaining increased levels of SOM, and/or (ii) conditioning the soil with a natural geo-sorbent like biochar can help immobilize Pb in a forest with Ultisols.

목차

Abstract
Introduction
Materials and Methods
Study area
Methodology
Results
Discussion
Conclusions
Acknowledgements
References

키워드

natural geo-sorbents Ultisols lead immobilization montane forest Sri Lanka

저자

  • Kasun Lakmini [ Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77840, USA/Faculty of Graduate Studies, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka ]
  • Niluka Ranasinghe [ Faculty of Graduate Studies, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka ]
  • Rasanjali Jayamuni de Silva [ Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka ]
  • Priyantha Indralal Yapa [ Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka ]
  • Ranmalee Bandara [ Faculty of Geomatics, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka ] Corresponding Author
  • Mahinda Senevirathne [ Faculty of Applied Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka ]

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    강원대학교 산림과학연구소 [Institute of Forest Science Kangwon National University]
  • 설립연도
    1975
  • 분야
    농수해양>임학
  • 소개
    강원대학교부설산림과학연구소(이하 “연구소”라 한다)는 산림에 관한 제반 학술적 연구를 통하여 산림자원의 효용을 밝히고 임업 및 임산업의 발전에 기여함을 목적으로 한다.

간행물

  • 간행물명
    Journal of Forest and Environmental Science [산림과학연구]
  • 간기
    계간
  • pISSN
    2288-9744
  • eISSN
    2288-9752
  • 수록기간
    1981~2026
  • 등재여부
    KCI 등재
  • 십진분류
    KDC 526 DDC 634

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