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Carbon Release Characteristics of Garden Waste Biochar and Its Impact on Soil Carbon Fractions
HUANGYingmei, LIANGYongxin, WUJialong, ZHANGJuntao, XUChangchao, LIANGChunmei
Chin Agric Sci Bull ›› 2026, Vol. 42 ›› Issue (16) : 147-156.
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Abbreviation (ISO4): Chin Agric Sci Bull
Editor in chief: Yulong YIN
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Carbon Release Characteristics of Garden Waste Biochar and Its Impact on Soil Carbon Fractions
To investigate the carbon release characteristics of biochar derived from horticultural waste and its effects on soil carbon fractions, nine common types of horticultural waste in South China were selected: tree materials (eucalyptus, camphor tree, guava, palm leaves, and palm shells), shrub (Cassia fistula), and herbaceous plants (broadleaf carpet grass, petunia, and balsam). Biochar was produced from each material, and their basic physicochemical properties, dissolved organic carbon (DOC) release characteristics, and composition were characterized. A typical lateritic red soil from a subtropical broad-leaved forest urban park was used as the test soil. Soil incubation experiments were conducted to examine the effects of different application rates (0.2% and 1.0%, m/m) of biochar from broadleaf carpet grass, C. fistula, petunia, and eucalyptus on soil physicochemical properties, microbial biomass carbon (MBC), particulate organic carbon (POC), mineral-associated organic carbon (MAOC), and easily oxidizable organic carbon (EOC). The results showed that biochar derived from woody plants such as eucalyptus had higher specific surface areas and more compact pore structures, while those from herbaceous species like broadleaf carpet grass exhibited higher pH, electrical conductivity (EC), and ash content. DOC release followed a pattern of rapid initial release followed by gradual decline, with the release amount ranking as: herbaceous>shrub>woody species. Under different extraction methods, DOC release was in the order of hot water extraction>cold water extraction>weak alkaline extraction, with palm shell biochar showing the highest release and eucalyptus biochar the lowest. The 1.0% biochar application rate most significantly increased soil pH, EC, and organic matter content. After 14 days of incubation, except for the treatment with 0.2% C. fistula biochar, all other treatments showed a significant increase in soil DOC content by 47.12% to 111.32%. After 28 days, the soil DOC content in the 0.2% broadleaf carpet grass biochar treatment increased significantly by 69.92%. By day 56, DOC levels in all treatments were lower than those in the control group. Except for the 0.2% petunia biochar treatment, MBC in all other treatments increased significantly by 14.90% to 72.61%. The treatment with biochar also significantly increased the POC content by 31.66% to 364.65%, and the contents of MAOC and EOC also increased to varying degrees. At an addition rate of 1%, the contents of MBC, POC, MAOC and EOC were all higher than those at an addition rate of 0.2%. The addition of herbaceous biochar such as broadleaf carpet grass is beneficial for the rapid release of soil active carbon, the addition of shrub-like biochar such as C. fistula is helpful for activating the activity of soil microorganisms, and the addition of tree-like biochar such as eucalyptus is more conducive to the accumulation of stable carbon components in the soil.
garden waste / biochar / dissolved organic carbon / release characteristics / soil carbon fractions / lateritic red soil
| [1] |
黄英梅, 梁春梅, 梁永鑫, 等. 不同类型生物炭对绿地土壤理化性质和绣球花生长的影响[J]. 江西农业学报, 2025, 37(2):23-35.
|
| [2] |
孙向阳, 李素艳, 任学勇, 等. 园林绿化废弃物资源化利用研究进展[J]. 林业科学, 2025, 61(7):100-113.
|
| [3] |
吴家龙, 张俊涛. 园林绿色废弃物资源价值实现的系统认知与路径探析—以广州市为例[J]. 中国园林, 2024, 40(8):57-63.
|
| [4] |
|
| [5] |
|
| [6] |
荀卫兵, 王伯仁, 冉炜, 等. 不同施肥制度对南方旱地红壤微生物组结构和功能影响研究进展[J]. 农业资源与环境学报, 2021, 38(4):537-544.
|
| [7] |
袁华光, 章仕斌. 改良剂对红壤水土流失恢复林地土壤细菌群落结构的影响[J]. 亚热带水土保持, 2024, 36(2):1-5.
|
| [8] |
张星, 刘杏认, 林国林, 等. 生物炭和秸秆对华北农田表层土壤矿质氮和pH值的影响[J]. 中国农业气象, 2016, 37(2):131-142.
|
| [9] |
高梦雨, 江彤, 韩晓日, 等. 施用炭基肥及生物炭对棕壤有机碳组分的影响[J]. 中国农业科学, 2018, 51(11):2126-2135.
【目的】作为土壤肥力的重要指标，土壤有机碳及其组分在耕地生产力和作物产量方面发挥着重要作用。论文以4年定位施肥试验为依托，分析连续施用炭基肥及生物炭对土壤有机碳含量及其组分的影响，为调控农田土壤肥力及棕壤有机碳库的管理提供科学依据。【方法】田间试验始于2011年，设置5个处理：不施肥（CK）、低量生物炭（C15）、高量生物炭（C50）、氮磷钾配施（NPK）、炭基肥（BBF）。其中C15与BBF是等碳量处理，NPK与BBF是等氮磷钾养分处理。于第4年花生收获后（2014年秋季）采集各处理耕层（0—20 cm）土壤样本，测定土壤有机碳总量、各组分含量及花生产量。【结果】施用炭基肥和生物炭均可以显著增加耕层土壤总有机碳含量，比试验起始年土壤（简称起始土）分别提高10%、8%；而在相同碳素（C15和BBF）或氮磷钾养分投入（NPK和BBF）条件下，施用炭基肥提升土壤总有机碳含量的效果最好，提升幅度为2%—15%。施入炭基肥及生物炭显著提高了游离态颗粒有机碳和闭蓄态颗粒有机碳含量；在等碳量投入条件下，炭基肥处理的提升幅度分别为43%、17%；等氮磷钾养分投入条件下，炭基肥处理的提升幅度更大，分别为40%、43%。无论施入炭基肥或生物炭，对于矿物结合态有机碳含量影响均不大，但都比起始土略高。土壤可溶性有机碳含量变化规律与总有机碳相似，即施入炭基肥或生物炭均提高了其含量，但等碳量投入条件下无显著差异。各施肥处理花生产量在199.4—232.9 kg/667m2，均显著高于不施肥处理，其中施用炭基肥产量最大，比等碳量处理（C15）高17%，比等养分处理（NPK）高10%，且差异显著。【结论】连续多年施用炭基肥或生物炭均能明显提高土壤总有机碳、游离态颗粒有机碳、闭蓄态颗粒有机碳含量；提升效果显著优于投入等量碳素或等量氮磷钾养分。连续多年施肥可以提高土壤中水溶性有机碳含量，但炭基肥与生物炭、氮磷钾配施处理间无明显差异。无论施用炭基肥还是生物炭对土壤矿物结合态有机碳含量影响不大。连续施用炭基肥对花生产量的提升效果最好，显著高于等氮磷钾养分和等碳量处理。
|
| [10] |
牟芝熠, 沈育伊, 曹杨, 等. 生物炭施用5a后对桂北桉树人工林土壤有机碳组分的影响[J]. 环境科学, 2023, 44(12):6869-6879.
|
| [11] |
马光恕, 梁枭, 张渟, 等. 生物炭对甜瓜幼苗质量与根系生理特性的影响[J]. 干旱地区农业研究, 2022, 40(5):212-221.
|
| [12] |
黄英梅, 罗倩, 张俊涛. 棕榈壳生物炭对杜鹃花生长及栽培赤红壤性质的影响[J]. 林业与环境科学, 2025, 41(5):61-69.
|
| [13] |
|
| [14] |
In this study, the influences of feedstock and pyrolysis temperature on carbon fractions of biochar were investigated. Four types of organic wastes (rice straw (RS), pine wood (PW), pig manure (PM) and sewage sludge (SS)) were pyrolyzed at different temperatures (300 °C, 400 °C, 500 °C, 600 °C and 700 °C). Biochar produced at low temperature exhibited high yields, high dissolved organic carbon (DOC) content and unstable organic carbon content. In contrast, biochar formed at high temperature showed high C content and C stability with a low O/C and H/C ratios. In addition, the biochar pyrolyzed from PW contained the lowest DOC of the four biochar types. The properties of DOC fractions (F1, F2 and F3) released from biochar differed depending on feedstock, pyrolysis temperatures, and extraction procedures. The highest specific ultraviolet absorbance at 254 nm of the F1 and F2 fractions were observed for RS biochar, suggesting that more aromatic organic matter was present in sequentially extracted fractions of RS biochar than in extracts from the other biochars. In addition, the hot water extracts (F2) mostly showed higher aromaticity than cold water extracts (F1). The stability of biochars was greatly enhanced at pyrolysis temperatures >500 °C. If the biochars produced in this study were to be used for carbon sequestration in soil, the first priority should be PW, followed in order by RS and PM.Copyright © 2018 Elsevier Ltd. All rights reserved.
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
鲍士旦. 土壤农化分析[M]. 北京: 中国农业出版社, 2000.
|
| [20] |
\n Many models have been constructed in an attempt to describe the dynamics of soil organic‐matter (SOM) turnover, most of which include 2 to 3 kinetically defined organic‐matter pools. Physical and chemical definition of these conceptualized SOM pools has been difficult. We describe a simple method for dispersion of soil to isolate a particulate organic‐matter (POM) fraction that may represent an important SOM pool in grassland soils. The POM fraction was isolated by dispersing the soil in 5 g L\n −1\n hexametaphosphate and passing the dispersed soil samples through a 53‐µm sieve. We compared POM and mineral‐associated C among three tillage treatments (20 yr under cultivation) and an undisturbed grassland at Sidney, NE. The POM C in the native sod represented 39% of the total soil organic C. Twenty years of bare‐fallow, stubble‐mulch, and no‐till management reduced the C content in this fraction to 18, 19, and 25%, respectively, of the total organic C. The mineral‐associated organic‐matter fraction showed no reduction in C content in the bare‐fallow treatment compared with the grassland soil but increased in the no‐till and stubble‐mulch treatments. Nitrogen dynamics generally mirrored those observed for C. Analysis of the POM fraction for lignin and cellulose content indicated that this fraction was 47% lignin and had a lignocellulose index of 0.7. The stable C‐isotope composition of the POM fraction suggests that wheat‐derived POM turns over faster than grass‐derived POM. We suggest the POM fraction closely matches the characteristics of a SOM pool variously described as slow, decomposable, or stabilized organic matter.\n
|
| [21] |
Lactic acidosis can occur when large amounts of cereal grains are given to sheep without adequate adaptation. Virginiamycin has been shown to reduce lactic acid accumulation in vitro and in the rumen of sheep following ingestion of readily fermentable carbohydrates. The aim of this experiment was to determine if virginiamycin would prevent acidosis in hungry sheep given wheat, barley or oat grain without any adaptation. Merino wethers, penned individually and given wheat chaff 300 g/day for 9 days, were offered 2.1 kg of wheat, barley or oat grain, with or without virginiamycin. Rumen fluid was collected before and 6 and 24 h after grain feeding. Blood samples were obtained before and 24 and 48 h after grain feeding. 24 h after grain feeding, rumen pH was lower (P0.001) and rumen L-lactate higher (P0.05) in sheep given wheat without than with virginiamycin. D- and L-lactate were produced in equal proportions in sheep given grain plus virginiamycin, while sheep fed on grain without virginiamycin produced more of the L-lactate isomer 24 h after grain feeding. There was no effect of virginiamycin on grain intake, although intake of sheep given oat grain was lower (P0.01) than intake of sheep given wheat or barley. The number of sheep withdrawn from the experiment after grain feeding was lower (P0.05) when wheat was given to sheep with virginiamycin compared with untreated wheat grain. Feeding virginiamycin with grain did not reduce grain intake, but reduced the severity of acidosis in sheep given wheat grain.
|
| [22] |
陈效民, 吴华山, 孙静红. 太湖地区农田土壤中铵态氮和硝态氮的时空变异[J]. 环境科学, 2006(6):1217-1222.
|
| [23] |
杨放, 李心清, 王兵, 等. 生物炭在农业增产和污染治理中的应用[J]. 地球与环境, 2012, 40(1):100-107.
|
| [24] |
包志鹏, 林栋, 刘雪鹏, 等. 放牧强度对高寒草甸土壤有机碳及其组分的影响[J]. 草地学报, 2026, 34(1):172-181.
为评估放牧对草地土壤碳库的潜在影响，研究了不同放牧强度对高寒草甸土壤有机碳（Soil organic carbon，SOC）及其组分颗粒有机碳（Particulate organic carbon，POC）、矿物结合有机碳、轻组有机碳、重组有机碳、易氧化有机碳（Easily oxidation organic carbon，EOC）和溶解性有机碳（Dissolved organic carbon，DOC）含量的影响。结果表明：随放牧强度的增大，土壤SOC及其组分含量显著下降（除EOC，DOC外），有机碳库稳定性降低。SOC和POC含量在极度放牧条件下，比轻度放牧分别显著降低了33.54%和56.21%。EOC/SOC，DOC/SOC占比对放牧强度的响应波动较大，可作为评价放牧影响高寒草甸土壤碳库的重要指标。SOC及其组分含量与土壤全氮含量、容重和地上生物量显著相关，其中全氮是影响SOC及其组分含量的关键因子。适宜的放牧强度对维护和提升高寒草甸土壤质量和碳库功能至关重要，过度放牧降低了SOC积累和稳定性，研究为东祁连山高寒草甸放牧和土壤有机碳库管理提供了科学依据。
|
| [25] |
周正虎, 刘琳, 侯磊. 土壤有机碳的稳定和形成:机制和模型[J]. 北京林业大学学报, 2022, 44(10):11-22.
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