Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

IF 3.9 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Carbon Balance and Management Pub Date : 2023-11-03 DOI:10.1186/s13021-023-00241-1

Yves Theoneste Murindangabo, Marek Kopecký, Trong Nghia Hoang, Jaroslav Bernas, Tulsi Parajuli, Suman Dhakal, Petr Konvalina, Jean de Dieu Marcel UFITIKIREZI, Gisele Kaneza, Babu Ram Khanal, Shiva Chandra Dhakal, Arjun Kumar Shrestha

{"title":"Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal","authors":"Yves Theoneste Murindangabo, Marek Kopecký, Trong Nghia Hoang, Jaroslav Bernas, Tulsi Parajuli, Suman Dhakal, Petr Konvalina, Jean de Dieu Marcel UFITIKIREZI, Gisele Kaneza, Babu Ram Khanal, Shiva Chandra Dhakal, Arjun Kumar Shrestha","doi":"10.1186/s13021-023-00241-1","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Land use and land cover changes have a significant impact on the dynamics of soil organic matter (SOM) and its fractions, as well as on overall soil health. This study conducted in Bharatpur Catchment, Chitwan District, Nepal, aimed to assess and quantify variations in total soil organic matter (T<sub>SOMC</sub>), labile organic matter fraction (C<sub>L</sub>), stable organic matter fraction (C<sub>S</sub>), stability ratio (SR), and carbon management index (CMI) across seven land use types: pastureland, forestland, fruit orchards, small-scale conventional agricultural land, large-scale conventional agricultural land, large-scale alternative fallow and conventional agricultural land, and organic farming agricultural land. The study also explored the potential use of the Carbon Management Index (CMI) and stability ratio (SR) as indicators of soil degradation or improvement in response to land use changes.</p><h3>Results</h3><p>The findings revealed significant differences in mean values of T<sub>SOMC</sub>, C<sub>L</sub>, and C<sub>S</sub> among the different land use types. Forestland and organic farming exhibited significantly higher T<sub>SOMC</sub> (3.24%, 3.12%) compared to fruit orchard lands (2.62%), small scale conventional farming (2.22%), alternative fallow and conventional farming (2.06%), large scale conventional farming (1.84%) and pastureland (1.20%). Organic farming and Forestland also had significantly higher C<sub>L</sub> (1.85%, 1.84%) and C<sub>S</sub> (1.27%, 1.39%) compared to all other land use types. Forest and organic farming lands showed higher CMI values, while pastures and forests exhibited higher SR values compared to the rest of the land use types.</p><h3>Conclusions</h3><p>This study highlights the influence of various land use types on soil organic matter pools and demonstrates the potential of CMI and SR as indicators for assessing soil degradation or improvement in response to land use and land cover changes.</p></div>","PeriodicalId":505,"journal":{"name":"Carbon Balance and Management","volume":"18 1","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10625307/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon Balance and Management","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1186/s13021-023-00241-1","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Background

Land use and land cover changes have a significant impact on the dynamics of soil organic matter (SOM) and its fractions, as well as on overall soil health. This study conducted in Bharatpur Catchment, Chitwan District, Nepal, aimed to assess and quantify variations in total soil organic matter (T_SOMC), labile organic matter fraction (C_L), stable organic matter fraction (C_S), stability ratio (SR), and carbon management index (CMI) across seven land use types: pastureland, forestland, fruit orchards, small-scale conventional agricultural land, large-scale conventional agricultural land, large-scale alternative fallow and conventional agricultural land, and organic farming agricultural land. The study also explored the potential use of the Carbon Management Index (CMI) and stability ratio (SR) as indicators of soil degradation or improvement in response to land use changes.

Results

The findings revealed significant differences in mean values of T_SOMC, C_L, and C_S among the different land use types. Forestland and organic farming exhibited significantly higher T_SOMC (3.24%, 3.12%) compared to fruit orchard lands (2.62%), small scale conventional farming (2.22%), alternative fallow and conventional farming (2.06%), large scale conventional farming (1.84%) and pastureland (1.20%). Organic farming and Forestland also had significantly higher C_L (1.85%, 1.84%) and C_S (1.27%, 1.39%) compared to all other land use types. Forest and organic farming lands showed higher CMI values, while pastures and forests exhibited higher SR values compared to the rest of the land use types.

Conclusions

This study highlights the influence of various land use types on soil organic matter pools and demonstrates the potential of CMI and SR as indicators for assessing soil degradation or improvement in response to land use and land cover changes.

Abstract Image

查看原文本刊更多论文

尼泊尔Chitwan区bharatpur流域不同土地利用类型的土壤有机质组分、不稳定性、稳定性比和碳管理指数的比较分析。

背景：土地利用和土地覆盖变化对土壤有机质（SOM）及其组分的动态以及整体土壤健康具有重要影响。这项研究在尼泊尔奇特万区巴拉特布尔流域进行，旨在评估和量化七种土地利用类型的土壤总有机质（TSOMC）、不稳定有机质分数（CL）、稳定有机物分数（CS）、稳定性比（SR）和碳管理指数（CMI）的变化：牧场、林地、果园、，大规模常规农业用地、大规模替代休耕和常规农业用土地以及有机农业用地。该研究还探讨了碳管理指数（CMI）和稳定性比（SR）作为土壤退化或改善指标的潜在用途，以应对土地利用变化。结果：不同土地利用类型的TSOMC、CL和CS平均值存在显著差异。与果园地（2.62%）、小规模传统农业（2.22%）、替代休耕和传统农业（2.06%）相比，林地和有机农业表现出显著更高的TSOMC（3.24%，3.12%），与所有其他土地利用类型相比，有机农业和林地的CL（1.85%，1.84%）和CS（1.27%，1.39%）也显著较高。与其他土地利用类型相比，森林和有机农业用地的CMI值更高，而牧场和森林的SR值更高。结论：本研究强调了各种土地利用类型对土壤有机质库的影响，并证明了CMI和SR作为评估土壤退化或改善的指标对土地利用和土地覆盖变化的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Carbon Balance and Management Environmental Science-Management, Monitoring, Policy and Law

CiteScore

7.60

自引率

0.00%

发文量

审稿时长

14 weeks

期刊介绍： Carbon Balance and Management is an open access, peer-reviewed online journal that encompasses all aspects of research aimed at developing a comprehensive policy relevant to the understanding of the global carbon cycle. The global carbon cycle involves important couplings between climate, atmospheric CO2 and the terrestrial and oceanic biospheres. The current transformation of the carbon cycle due to changes in climate and atmospheric composition is widely recognized as potentially dangerous for the biosphere and for the well-being of humankind, and therefore monitoring, understanding and predicting the evolution of the carbon cycle in the context of the whole biosphere (both terrestrial and marine) is a challenge to the scientific community. This demands interdisciplinary research and new approaches for studying geographical and temporal distributions of carbon pools and fluxes, control and feedback mechanisms of the carbon-climate system, points of intervention and windows of opportunity for managing the carbon-climate-human system. Carbon Balance and Management is a medium for researchers in the field to convey the results of their research across disciplinary boundaries. Through this dissemination of research, the journal aims to support the work of the Intergovernmental Panel for Climate Change (IPCC) and to provide governmental and non-governmental organizations with instantaneous access to continually emerging knowledge, including paradigm shifts and consensual views.