<?xml version="1.0" encoding="UTF-8"?>
<article xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="1.4" article-type="research-article" xml:lang="en">
  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title xml:lang="ru">Жизнь Земли. Междисциплинарный научно-практический журнал</journal-title>
        <journal-title xml:lang="en">Life of the Earth</journal-title>
      </journal-title-group>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.29003/m4690.0514-7468.2020_47_2/215-229</article-id>            <article-id pub-id-type="publisher-id">2557</article-id>
      <title-group>
        <article-title xml:lang="ru">Рекультивация углеотвалов Донбасса с помощью биогеохимической технологии</article-title>        <trans-title-group xml:lang="en"><trans-title>Reclamation of Donbas coal dump sites using biogeochemical technology</trans-title></trans-title-group>      </title-group>
      <contrib-group>
                    <contrib contrib-type="author">
              <string-name xml:lang="ru">Башкин В.Н., Васильева Г.К.</string-name>              <string-name xml:lang="en">Bashkin, V.N., Vasilieva, G.K.</string-name>            </contrib>
              </contrib-group>

            <pub-date pub-type="epub" iso-8601-date="2025-05-28">
        <day>28</day>
        <month>05</month>
        <year>2020</year>
      </pub-date>
      
      <volume>47</volume>      <issue>2</issue>      <fpage>215</fpage>      <lpage>229</lpage>
            <history>
                <date date-type="accepted" iso-8601-date="2025-05-28">
  <day>28</day>
  <month>05</month>
  <year>2025</year>
</date>
      </history>
      
      <abstract xml:lang="ru"><p>В связи с большим объёмом угледобычи в РФ и других странах существует серьёзная проблема образования терриконов из углеотвалов, представляющих значительную угрозу для окружающей среды прилегающих территорий. Один из таких районов – Донецкий угольный бассейн площадью более 60 тыс. км2. Целью исследований является разработка биогеохимической технологии рекультивации углеотвалов Донбасса, основанной на проведении фиторекультивации на фоне различных добавок. В экспериментах использовали образцы почвогрунта, отобранного из верхнего слоя террикона шахты Аютинская Донецкого угольного бассейна, а также зонального чернозёма обыкновенного. В качестве добавок использовали биочар из древесины и другие сорбенты, в т. ч. минеральные (диатомит и вермикулит) и органические (торф кислый и нейтрализованный), а также чернозём обыкновенный и карьерный песок – чистый и с добавками биогумуса. Все добавки оказывали положительное действие на рост зелёной массы засухоустойчивого газона, измеренной в ходе 3-х укосов в течение вегетационного сезона 2024 г. Наилучшие результаты получены при внесении торфа нейтрализованного и чернозёма в дозах 25 %, а также карьерного песка в дозах 25 и 50 % с добавками биогумуса.</p></abstract>      <trans-abstract xml:lang="en"><p>Due to the large volume of coal mining in the Russian Federation and other countries, there is a serious issue of the formation of waste heaps from coal dumps, which pose a significant threat to the environment of adjacent territories. One of such areas is the Donetsk coal basin, whose area is more than 60 thousand km2. Phytoreclamation is the most common and cost-effective method recommended for the restoration of degraded coal dump soil, which reduces the removal of toxic substances with dust emissions and water runoff. However, plant growth on these soils is hindered by their phytotoxicity and unfavorable physical and physicochemical properties. The aim of this research was to develop a biogeochemical technology for the reclamation of coal dumps in Donbas based on phytoreclamation with various additives. Our experiments involved soil samples taken from the upper layer of the Ayutinskaya mine waste heap in the Donetsk coal basin, as well as zonal ordinary chernozem samples. The experiments were conducted in microfield conditions in bottomless vessels with an area of 0.1 m2 dug into the ground. The additives used were wood biochar and other sorbents, including mineral (diatomite and vermiculite) and organic (acidic and neutralized peat) ones, as well as ordinary chernozem and quarry sand – clean and with biohumus additives. The soil was seeded with a drought-resistant lawn mixture. All additives had a positive effect on the growth of green mass of drought-resistant lawn, measured during 3 cuttings ib the vegetation season of 2024. However, the best results were obtained with the addition of neutralized peat and chernozem at doses of 25 %, as well as quarry sand at doses of 25 and 50 % with the addition of biohumus; at the same time, the additional addition of 5 % biochar to all these samples gave no desired result.</p></trans-abstract>
      <kwd-group xml:lang="ru"><kwd>углеотвалы</kwd><kwd>Донбасс</kwd><kwd>рекультивация</kwd><kwd>сорбенты</kwd><kwd>биогеохимическая технология</kwd></kwd-group>      <kwd-group xml:lang="en"><kwd>coal dumps</kwd><kwd>Donbas</kwd><kwd>reclamation</kwd><kwd>sorbents</kwd><kwd>biogeochemical technology</kwd></kwd-group>
          </article-meta>
  </front>
  <body/>
  <back>
    <ref-list>
      <ref id="ref1"><mixed-citation xml:lang="ru">Алексеева Т.П., Бурмистрова Т.И., Сысоева Л.Н., Трунова Н.М., Середина В.П. Технология рекультивации почв угольного отвала с использованием торфяных препаратов // Экология и промышленность России. 2016. Т. 20, № 11. С. 39–43.</mixed-citation></ref><ref id="ref2"><mixed-citation xml:lang="ru">Бауэр Т.В., Барахов А.В., Минкина Т.М., Лацынник Е.С. Оценка степени загрязнения почв техногенных ландшафтов в зоне влияния терриконов угольных шахт Ростовской области // Природа и общество: интеграционные процессы: материалы международной научно-практической конф. «Пятые ландшафтно-экологические чтения, посвящённые Г.Е. Гришанкову». Севастополь, 2022. С. 212–217.</mixed-citation></ref><ref id="ref3"><mixed-citation xml:lang="ru">Бурачевская М.В., Минкина Т.М., Бауэр Т.В., Лобзенко И.П., Северина В.И. Влияние биочара из отходов сельского хозяйства на изменение рH почвы при поглощении тяжёлых металлов // Актуальная биотехнология. 2021. Т. 1 (35). С. 208.</mixed-citation></ref><ref id="ref4"><mixed-citation xml:lang="ru">Кизилов О.А., Байкин Ю.Л., Овчинников П.Ю. Применение минеральных сорбентов при загрязнении почв тяжёлыми металлами // Вестник биотехнологии. 2017. № 1 (11). С. 16–18.</mixed-citation></ref><ref id="ref5"><mixed-citation xml:lang="ru">Крупская Л.Т., Голубев Д.А., Растанина Н.К., Филатова М.Ю. Рекультивация поверхности хвостохранилища закрытого горного предприятия Приморского края с использованием биоремедиации // Горный инф.-аналит. бюлл. 2019. № 9. С. 138–148. DOI: 10.25018/0236-1493-2019-09-0-138-148.</mixed-citation></ref><ref id="ref6"><mixed-citation xml:lang="ru">Минкина Т.М., Минин Н.С., Колесников С.И., Горовцов А.В., Чистяков В.А. Оценка фитотоксичности чернозёма обыкновенного при применении Bacillus sp. и биочара для стимуляции разложения пожнивных остатков озимой пшеницы (Triticum aestivum L.) // Агрохимия. 2023. № 5. С. 60–69.</mixed-citation></ref><ref id="ref7"><mixed-citation xml:lang="ru">Неведров Н.П. Способ иммобилизации свинца в загрязнённых почвах. Патент РФ 2655215C1. 2017.</mixed-citation></ref><ref id="ref8"><mixed-citation xml:lang="ru">Петункина Л.О., Заушинцена А.В., Шатилов Д.И. Оптимальные соотношения рекультиваторов для целевого использования на угледобывающем предприятии // Экологические проблемы промышленно развитых и ресурсных регионов: пути решения. Кемерово: Кузбасский гос. технич. ун-т им. Т.Ф. Горбачева, 2016. С. 38–49.</mixed-citation></ref><ref id="ref9"><mixed-citation xml:lang="ru">Попова Ю.А. Детоксикация антропогенно-нагруженных территорий, загрязнённых полициклическими ароматическими углеводородами и тяжёлыми металлами, с последующим использованием под строительство. Автореф. дисс. к.техн.н. Ростов-на-Дону, 2006. 24 с.</mixed-citation></ref><ref id="ref10"><mixed-citation xml:lang="ru">Пуликова Е.П., Горовцов А.В., Невидомская Д.Г., Казарян К.А., Минкина Т.М. Влияние хелатирующих агентов на процессы денитрификации в почвах степных ландшафтов районов угледобычи восточного Донбасса // Мониторинг, охрана и восстановление почвенных экосистем в условиях антропогенной нагрузки. Ростов-на-Дону–Таганрог, 2022. С. 238–243.</mixed-citation></ref><ref id="ref11"><mixed-citation xml:lang="ru">Adnan M., Shah Z., Sharif M., Rahman H. Liming induces carbon dioxide (CO2) emission in PSB inoculated alkaline soil supplemented with different phosphorus sources // Environ. Sci. Pollut. Res. 2018. V. 25. Р. 9501–9509.</mixed-citation></ref><ref id="ref12"><mixed-citation xml:lang="ru">Amonette J.E., Jospeh S. Characteristics of biochar: microchemical properties // Biochar for Environ. Management Sci. and Technology. London: Earthscan, 2009. P. 33–43.</mixed-citation></ref><ref id="ref13"><mixed-citation xml:lang="ru">Bauer T., Minkina T., Mandzhieva S., Burachevskaya M., Zharkova M. Biochar application to detoxification of the heavy metal-contaminated fluvisols // Environ. Sci. Chemistry, Materials Science. 2020. DOI:10.1051/e3sconf/202017509009.</mixed-citation></ref><ref id="ref14"><mixed-citation xml:lang="ru">Bech J., Duran P., Roca N., Poma W., Sánchez I., Roca-Pérez L., Boluda R., Barceló J., Poschenrieder C. Accumulation of Pb and Zn in Bidens triplinervia and Senecio sp. spontaneous species from mine spoils in Peru and their potential use in phytoremediation // J. Geochem. Explor. 2012. V. 123. P. 109–113.</mixed-citation></ref><ref id="ref15"><mixed-citation xml:lang="ru">Benoit P. Energy and development in a changing world: a framework for the 21st century // Center of Global Energy Policy at Columbia (https://www. energypolicy.columbia.edu/).</mixed-citation></ref><ref id="ref16"><mixed-citation xml:lang="ru">Chandra S., Medha I., Tiwari A.K. The role of modified biochar for the remediation of coal mining-impacted contaminated soil: a review // Sustainability. 2023. V. 15, 3973. DOI: 10.3390/su15053973.</mixed-citation></ref><ref id="ref17"><mixed-citation xml:lang="ru">Drozdova M.Yu., Pozdnyakova A.V., Osintseva M.A., Burova N.V., Minina V.I. The microorganism-plant system for remediation of soil exposed to coal mining // Foods and Raw Materials. 2021. V. 9 (2). P. 406–418. DOI: 10.21603/2308-4057-2021-2-406-418.</mixed-citation></ref><ref id="ref18"><mixed-citation xml:lang="ru">Friedlingstein P., O’Sullivan M., Jones M.W., et al. Global Carbon Budget 2024 // Earth Syst. Sci. Data. 2025. V. 17. Р. 965–1039. DOI: 10.5194/essd-17-965-2025.</mixed-citation></ref><ref id="ref19"><mixed-citation xml:lang="ru">Jambhulkar H.P., Kumar M.S. Eco-restoration approach for mine spoil overburden dump through biotechnological route // Environ. Monit. Assess. 2019. V. 191. P. 772.</mixed-citation></ref><ref id="ref20"><mixed-citation xml:lang="ru">Kelly C. N., Peltz C. D., Stanton M., Rutherford D. W., Rostad C. E. Biochar application to hardrock mine tailings: soil quality, microbial activity, and toxic element sorption // Appl. Geochem. 2014. V. 43. P. 35–48. DOI: 10.1016/j.apgeochem.2014.02.003.</mixed-citation></ref><ref id="ref21"><mixed-citation xml:lang="ru">Maiti S.K. Ecorestoration of the coalmine degraded lands. Berlin/Heidelberg (Germany): Springer Sci. &amp; Business Media, 2012. ISBN 9788578110796.</mixed-citation></ref><ref id="ref22"><mixed-citation xml:lang="ru">Mossa A.W., Bailey E.H., Usman A.; Young S.D., Crout N.M.J. The Impact of long-term biosolids application (&gt;100 years) on soil metal dynamics // Sci. Total Environ. 2020. V. 720. 137441.</mixed-citation></ref><ref id="ref23"><mixed-citation xml:lang="ru">Pajak M., Błonska E., Szostak M., Gasiorek M., Pietrzykowski M., Urban O., Derbis P. Restoration of vegetation in relation to soil properties of spoil heap heavily contaminated with heavy metals // Water. Air. Soil Pollut. 2018. V. 229. P. 392–402.</mixed-citation></ref><ref id="ref24"><mixed-citation xml:lang="ru">Pandey V.C., Singh N. Impact of fly ash incorporation in soil systems // Agric. Ecosyst. Environ. 2010. V. 136. P. 16–27.</mixed-citation></ref><ref id="ref25"><mixed-citation xml:lang="ru">Prasad M.N.V., de Campos Favas P.J., Maiti S.K. Fly Ash and lime-stabilized biosolid mixtures in mine spoil reclamation // Bio-Geotechnologies for Mine Site Rehabilitation. Amsterdam (The Ne­therlands): Elsevier, 2018. P. 159–180.</mixed-citation></ref><ref id="ref26"><mixed-citation xml:lang="ru">Qu J., Tian X., Zhang X., Yao J., Xue J., Li K., Zhang B., Wang L., Zhang Y. Free radicals-triggered reductive and oxidative degradation of highly chlorinated compounds via regulation of heat-activated persulfate by low-molecular-weight organic acids // Appl. Catal. Environ. 2022. V. 310. 121359.</mixed-citation></ref><ref id="ref27"><mixed-citation xml:lang="ru">Zhu W., Wang J., Wu D., Li X., Luo Y., Han C., Ma W., He S. Investigating the heavy metal adsorption of mesoporous silica materials prepared by microwave synthesis // Nanoscale Research Letters. 2017. V. 12 (1). P. 1–9. DOI: 10.1186/s11671-017-2070-4.</mixed-citation></ref><ref id="ref28"><mixed-citation xml:lang="ru">Zimmerman A.R., Gao B., Ahn M.Y. Positive and negative carbon mineralization priming effects among a variety of biochar amended soils // Soil Biology and Biochemistry. 2011. V. 43. P. 1169–1179.</mixed-citation></ref><ref id="ref29"><mixed-citation xml:lang="ru">WEC. World Energy Resources 2016. WEC: Milwaukee, WI, USA. 2016. 345 p.</mixed-citation></ref>      <ref id="ref30"><mixed-citation xml:lang="en">Alexeyeva, T.P., Burmistrova, T.I., Sysoeva, L.N., Trunova, N.M., Seredina, V.P., “Technology of reclamation of coal dump soils using peat preparations”, Ecologija I promishlennost Rossii [Ecology and Industry of Russia] 20 (11), 39–43 (2016) (in Russian).</mixed-citation></ref><ref id="ref31"><mixed-citation xml:lang="en">Bauer, T.V., Barakhov, A.V., Minkina, T.M., Latsynnik, E.S., “Assessment of the degree of soil pollution in technogenic landscapes in the zone of influence of coal mine waste heaps in the Rostov Region”, Proc. of the Intern. Sci. and Practical Conf. “The Fifth Landscape and Ecological Readings Dedi­cated to G.E. Grishankov “Nature and Society: Integration Processes” (Sevastopol, 2022) (in Russian).</mixed-citation></ref><ref id="ref32"><mixed-citation xml:lang="en">Burachevskaya, M.V., Minkina, T.M., Bauer, T.V., Lobzenko, I.P., Severina, V.I., “Effect of biochar from agricultural waste on changes in soil pH during absorption of heavy metals”, Actualnaja biotehnologija [Actual biotechnology] 1 (35), 208 (2022) (in Russian).</mixed-citation></ref><ref id="ref33"><mixed-citation xml:lang="en">Kizilov, O.A., Baykin, Yu.L., Ovchinnikov, P.Yu., “Use of mineral sorbents for soil contamination with heavy metals”, Vestnik biotehnologii [Bull. of biotechnology] 1 (11), 16–18 (2017) (in Russian).</mixed-citation></ref><ref id="ref34"><mixed-citation xml:lang="en">Krupskaya, L.T., Golubev, D.A., Rastanina, N.K., Filatova, M.Yu., “Reclamation of the surface of the tailings dump of a closed mining enterprise in the Primorsky Krai using bioremediation”, Gornij informatsionno-analiticheskij bulleten [Mining information and analytical bull] 9, 138–148 (2019) (in Russian). DOI: 10.25018/0236-1493-2019-09-0-138-148.</mixed-citation></ref><ref id="ref35"><mixed-citation xml:lang="en">Minkina, T.M., Minin, N.S., Kolesnikov, S.I., Gorovtsov, A.V., Chistyakov, V.A., “Assessment of the phytotoxicity of ordinary chernozem using Bacillus sp. and biochar to stimulate the decomposition of winter wheat (Triticum aestivum L.) crop residues”, Agrohimija [Agrochemistry] 5, 60–69 (2023) (in Russian).</mixed-citation></ref><ref id="ref36"><mixed-citation xml:lang="en">Nevedrov, N.P., Method of immobilization of lead in contaminated soils. Patent of the Russian Federation 2655215C1 (2017) (in Rus.; Abstr. in Engl.).</mixed-citation></ref><ref id="ref37"><mixed-citation xml:lang="en">Petunkina, L.O., Zaushintsena, A.V., Shatilov, D.I., “Optimal ratios of reclamation agents for targeted use at a coal mining enterprise”, Environ. problems of industrially developed and resource regions: solutions. Proceedings of the All-Russian youth sci. and practical conf. (Kemerovo: Kuzbass State Technical University named after T.F. Gorbachev, 2016) (in Russian).</mixed-citation></ref><ref id="ref38"><mixed-citation xml:lang="en">Popova, Yu.A., “Detoxification of anthropogenically loaded territories contaminated with polycyclic aromatic hydrocarbons and heavy metals, with subsequent use for construction”, PhD thesis abstract (Rostov-on-Don, 2006) (in Russian).</mixed-citation></ref><ref id="ref39"><mixed-citation xml:lang="en">Pulikova, E.P., Gorovtsov, A.V., Nevidomskaya, D.G., Kazaryan, K.A., Minkina, T.M., “Influence of chelating agents on denitrification processes in soils of steppe landscapes of coal mining areas of the eastern Donbas”, Monitoring, protection and restoration of soil ecosystems under anthropogenic load. Proc. of the International Youth Sci. School (Rostov-on-Don–Taganrog, 2022) (in Russian).</mixed-citation></ref><ref id="ref40"><mixed-citation xml:lang="en">Adnan, M., Shah, Z., Sharif, M., Rahman, H., “Liming induces carbon dioxide (CO2) emission in PSB inoculated alkaline soil supplemented with different phosphorus sources”, Environ. Sci. Pollut. Res. 25, 9501–9509 (2018).</mixed-citation></ref><ref id="ref41"><mixed-citation xml:lang="en">Amonette, J.E., Jospeh, S., “Characteristics of biochar: microchemical properties”, Biochar for Environ. Management Sci. and Technology (London: Earthscan, 2009).</mixed-citation></ref><ref id="ref42"><mixed-citation xml:lang="en">Bauer, T., Minkina, T., Mandzhieva, S., Burachevskaya, M., Zharkova, M., “Biochar application to detoxification of the heavy metal-contaminated fluvisols”, Environ. Science Chemistry, Materials Science. Published in E3S Web of Conferences 1. February 2020. DOI:10.1051/e3sconf/202017509009.</mixed-citation></ref><ref id="ref43"><mixed-citation xml:lang="en">Bech, J., Duran, P., Roca, N., Poma, W., Sánchez, I., Roca-Pérez, L., Boluda, R., Barceló, J., Poschenrieder, C., “Accumulation of Pb and Zn in Bidens triplinervia and Senecio sp. spontaneous species from mine spoils in Peru and their potential use in phytoremediation”, J. Geochem. Explor. 123, 109–113 (2012).</mixed-citation></ref><ref id="ref44"><mixed-citation xml:lang="en">Benoit, P., “Energy and development in a changing world: a framework for the 21st century”, Center of Global Energy Policy at Columbia (https://www. energypolicy.columbia.edu/).</mixed-citation></ref><ref id="ref45"><mixed-citation xml:lang="en">Chandra, S., Medha, I., Tiwari, A.K., “The role of modified biochar for the remediation of coal mining-impacted contaminated soil: a review”, Sustainability 15, 3973 (2023). DOI: 10.3390/su15053973.</mixed-citation></ref><ref id="ref46"><mixed-citation xml:lang="en">Drozdova, M.Yu., Pozdnyakova, A.V., Osintseva, M.A., Burova, N.V., Minina, V.I., “The microorganism-plant system for remediation of soil exposed to coal mining”, Foods and Raw Materials 9 (2), 406–418 (2021). DOI: 10.21603/2308-4057-2021-2-406-418.</mixed-citation></ref><ref id="ref47"><mixed-citation xml:lang="en">Friedlingstein, P., O’Sullivan, M., Jones, M.W., et al., “Global Carbon Budget 2024”, Earth Syst. Sci. Data 17, 965–1039 (2025). DOI: 10.5194/essd-17-965-2025.</mixed-citation></ref><ref id="ref48"><mixed-citation xml:lang="en">Jambhulkar, H.P., Kumar, M.S., “Eco-restoration approach for mine spoil overburden dump through biotechnological route”, Environ. Monit. Assess. 191, 772 (2019).</mixed-citation></ref><ref id="ref49"><mixed-citation xml:lang="en">Kelly, C.N., Peltz, C.D., Stanton, M., Rutherford, D.W., Rostad, C.E., “Biochar application to hardrock mine tailings: soil quality, microbial activity, and toxic element sorption”, Appl. Geochem. 43, 35–48 (2014). DOI: 10.1016/j.apgeochem.2014.02.003.</mixed-citation></ref><ref id="ref50"><mixed-citation xml:lang="en">Maiti, S.K., Ecorestoration of the coalmine degraded lands (Berlin/Heidelberg (Germany): Springer Sci. &amp; Business Media, 2012). ISBN 9788578110796.</mixed-citation></ref><ref id="ref51"><mixed-citation xml:lang="en">Mossa, A.W., Bailey, E.H., Usman, A., Young, S.D., Crout, N.M.J., “The impact of long-term biosolids application (&gt;100 years) on soil metal dynamics”, Sci. Total Environ. 720, 137441.</mixed-citation></ref><ref id="ref52"><mixed-citation xml:lang="en">Pajak, M., Błonska, E., Szostak, M., Gasiorek, M., Pietrzykowski, M., Urban, O., Derbis, P., “Restoration of vegetation in relation to soil properties of spoil heap heavily contaminated with heavy metals”, Water. Air. Soil Pollut. 229, 392 (2018).</mixed-citation></ref><ref id="ref53"><mixed-citation xml:lang="en">Pandey, V.C., Singh, N., “Impact of fly ash incorporation in soil systems”, Agric. Ecosyst. Environ. 136, 16–27 (2010).</mixed-citation></ref><ref id="ref54"><mixed-citation xml:lang="en">Prasad, M.N.V., de Campos Favas, P.J., Maiti, S.K., “Fly ash and lime-stabilized biosolid mixtures in mine spoil reclamation”, Bio-Geotechnologies for Mine Site Rehabilitation (Elsevier: Amsterdam, The Netherlands, 2018).</mixed-citation></ref><ref id="ref55"><mixed-citation xml:lang="en">Qu, J., Tian, X., Zhang, X., Yao, J., Xue, J., Li, K., Zhang, B., Wang, L., Zhang, Y., “Free radicals-triggered reductive and oxidative degradation of highly chlorinated compounds via regulation of heat-activated persulfate by low-molecular-weight organic acids”, Appl. Catal. Environ. 310, 121359 (2022).</mixed-citation></ref><ref id="ref56"><mixed-citation xml:lang="en">Zhu, W., Wang, J., Wu, D., Li, X., Luo, Y., Han, C., Ma, W., He, S., “Investigating the heavy metal adsorption of mesoporous silica materials prepared by microwave synthesis”, Nanoscale Research Letters 12 (1), 1–9 (2017). DOI: 10.1186/s11671-017-2070-4.</mixed-citation></ref><ref id="ref57"><mixed-citation xml:lang="en">Zimmerman, A.R., Gao, B., Ahn, M.Y., “Positive and negative carbon mineralization priming effects among a variety of biochar amended soils”, Soil Biology and Biochemistry 43, 1169–1179 (2011).</mixed-citation></ref><ref id="ref58"><mixed-citation xml:lang="en">World Energy Resources 2016 (WEC: Milwaukee, WI, USA, 2016).</mixed-citation></ref>    </ref-list>
  </back>
</article>