Interactive effects of biochar and AMF on plant growth and greenhouse gas emissions from wetland microcosms
Interactive effects of biochar and AMF on plant growth and greenhouse gas emissions from wetland microcosms
复制标题
生物炭和 AMF 对湿地微观世界植物生长和温室气体排放的相互作用
DOI：
10.1016/j.geoderma.2019.03.033
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发表时间：
2019-07-15
期刊：
影响因子：
6.1
通讯作者：
Yu, Fei-Hai
中科院分区：
文献类型：
--
作者：
Liang, Jin-Feng;An, Jing;Yu, Fei-Hai
生物炭和丛枝菌根真菌（AMF）都能影响植物生长，但它们之间的相互作用对植物-土壤系统温室气体排放的影响尚不清楚。我们测试的假设，生物炭和AMF可以相互作用，以影响温室气体排放，由于促进植物生物量和改变土壤氮的有效性。我们组装的缩影，每个最初生长的克隆，湿地植物芦苇，有或没有AMF在土壤中，有或没有生物炭除了土壤中的三个rarnets（营养个体）。单独添加生物炭和AMF均显著提高了芦苇的生物量，但当两者同时存在时，这种作用减弱。AMF的存在显著降低了芦苇叶绿素和全氮含量，降低了土壤中NH 4 +-N、NO3--N、无机氮和全氮含量，但添加生物炭后这种影响减弱。在AMF存在的情况下，生物炭的添加显著提高了芦苇叶绿素和氮的含量，但在AMF不存在的情况下，生物炭的添加对芦苇叶绿素和氮的含量影响不大。AMF的存在增加了CO2排放量和CO2当量，而与生物炭的添加无关。AMF的存在也增加了N2 O的排放量时，生物炭的加入，但减少了它时，生物炭不加入。我们的结论是，生物炭添加和AMF的存在可以相互作用，影响植物生长和氮吸收，土壤氮的有效性和温室气体排放的植物-土壤生态系统。
Both biochar and arbuscular mycorrhizal fungi (AMF) can affect plant growth, but little is known about how the interaction between biochar and AMF affects greenhouse gas emissions from plant-soil systems. We tested the hypotheses that biochar and AMF can interact to affect greenhouse gas emissions due to promoted plant biomass and changed soil N availability. We assembled microcosms, each initially grown with three rarnets (vegetative individuals) of a clonal, wetland plant Phragmites australis, with or without AMF in soil and with or without biochar addition to soil. Biochar addition alone and AMF presence alone both significantly enhanced biomass of P. australis, but such effects became weaker when they were present simultaneously. The presence of AMF significantly decreased concentrations of chlorophyll and nitrogen (N) in P. australis and concentrations of NH4+-N, NO3--N, inorganic N and total N in soil, but such effects became weaker when biochar was added to soil than when it was not. Biochar addition significantly increased concentrations of chlorophyll and N in P. australis when AMF were present, but had little impact when AMF were absent. The presence of AMF increased CO2 emission and CO2 equivalent independent of biochar addition. The presence of AMF also increased N2O emission when biochar was added, but decreased it when biochar was not added. We conclude that biochar addition and AMF presence can interact to affect plant growth and N uptake, soil N availability and greenhouse gas emissions from plant-soil ecosystems.