The under-forest economy has received increased attention in China.However,little is known about the effects of co-composted biochar on soil and plant biomass in under-forest planting systems.In this study,plant bioma...The under-forest economy has received increased attention in China.However,little is known about the effects of co-composted biochar on soil and plant biomass in under-forest planting systems.In this study,plant biomass,soil nutrient levels,and bacterial communities were evaluated after application of biochar-based organic fertilizer(BOF,derived from co-composted biochar-compost)at varying rates to soils supporting Tetrastigma hemsleyanum Diels&Gilg planted under a Moso bamboo(Phyllostachys edulis)forest.BOF treatment increased the biomass of T.hemsleyanum.Compared with the control,BOF application significantly increased soil pH and organic carbon(SOC).The high-throughput sequencing results showed significant differences in the Bacteroidetes,Verrucomicrobia,Chlorofexi,and OD1 phyla among all groups.At the genus level,the control group was characterized by a preponderance of Conexibacter.Rhodanobacter was enriched in soils with a 3%BOF application and Steroidobacter and Spirochaeta were the most prominent phyla in the 5%BOF group.There was no biomarker selected in the 1%BOF group at the genus level.In conclusion,BOF application increased the biomass of T.hemsleyanum when intercropped under a Moso bamboo forest;this effect may be due to changes in the soil physicochemical properties and microbial communities after BOF application.展开更多
Biochar has been applied extensively as a soil amendment over the past decades. This review summarizes the general findings of the impacts of biochar application on different aspects from soil physical, chemical, and ...Biochar has been applied extensively as a soil amendment over the past decades. This review summarizes the general findings of the impacts of biochar application on different aspects from soil physical, chemical, and microbial properties, to soil nutrient availabilities, plant growth, biomass production and yield, greenhouse gases (GHG) emissions, and soil carbon sequestration. Due to different biochar pyrolysis conditions, feedstock types, biochar application rates and methods, and potential interactions with other factors such as plant species and soil nutrient conditions, results from those studies are not inclusive. However, most studies reported positive effects of biochar application on soil physical and chemical properties, soil microbial activities, plant biomass and yield, and potential reductions of soil GHG emissions. A framework of biochar impacts is summarized, and possible mechanisms are discussed. Further research of biochar application in agriculture is called to verify the proposed mechanisms involved in biochar-soil-microbial-plant interactions for soil carbon sequestration and crop biomass and yield improvements.展开更多
Soil degradation threatens the forest sustainable productivity,particularly in afforestation system.Biochar derived from agroforestry waste or biomass can potentially improve the degraded forest soil and promote the t...Soil degradation threatens the forest sustainable productivity,particularly in afforestation system.Biochar derived from agroforestry waste or biomass can potentially improve the degraded forest soil and promote the tree growth.To expand the application of biochar for forestry productivity improvement,we here reviewed the effects and the underlying mechanisms of biochar on the degraded forest soil and tree growth.Totally 96 studies that conducted from pot to field investigations in China were summarized.The result suggested that biochar generally exerted positive effects on restoration of degraded forest soil such as that with compaction,acidification or soil erosion,which are mainly manifested by improving soil porosity,increasing pH,enhancing erosion resistance and mitigating greenhouse gas emissions.Furthermore,biochar incorporation promoted the growth of tested trees in most cases,which effect was mainly attributing to directly supplying nutrients,improving soil physio-chemical properties,enhancing the root’s nutrient absorption capacity,and enlarging the living space.In summary,current studies demonstrate that biochar has a unique potential for improving degraded forest soils and promoting tree growth.However,investigations on the underlying mechanisms and the long-term effects should be strengthened.展开更多
基金The work was supported by the Cooperation Projects Between Provincial Government and Scientific Research Institutes for Forestry Science and Technology in Zhejiang Province(Grant No.2017SY02).
文摘The under-forest economy has received increased attention in China.However,little is known about the effects of co-composted biochar on soil and plant biomass in under-forest planting systems.In this study,plant biomass,soil nutrient levels,and bacterial communities were evaluated after application of biochar-based organic fertilizer(BOF,derived from co-composted biochar-compost)at varying rates to soils supporting Tetrastigma hemsleyanum Diels&Gilg planted under a Moso bamboo(Phyllostachys edulis)forest.BOF treatment increased the biomass of T.hemsleyanum.Compared with the control,BOF application significantly increased soil pH and organic carbon(SOC).The high-throughput sequencing results showed significant differences in the Bacteroidetes,Verrucomicrobia,Chlorofexi,and OD1 phyla among all groups.At the genus level,the control group was characterized by a preponderance of Conexibacter.Rhodanobacter was enriched in soils with a 3%BOF application and Steroidobacter and Spirochaeta were the most prominent phyla in the 5%BOF group.There was no biomarker selected in the 1%BOF group at the genus level.In conclusion,BOF application increased the biomass of T.hemsleyanum when intercropped under a Moso bamboo forest;this effect may be due to changes in the soil physicochemical properties and microbial communities after BOF application.
文摘Biochar has been applied extensively as a soil amendment over the past decades. This review summarizes the general findings of the impacts of biochar application on different aspects from soil physical, chemical, and microbial properties, to soil nutrient availabilities, plant growth, biomass production and yield, greenhouse gases (GHG) emissions, and soil carbon sequestration. Due to different biochar pyrolysis conditions, feedstock types, biochar application rates and methods, and potential interactions with other factors such as plant species and soil nutrient conditions, results from those studies are not inclusive. However, most studies reported positive effects of biochar application on soil physical and chemical properties, soil microbial activities, plant biomass and yield, and potential reductions of soil GHG emissions. A framework of biochar impacts is summarized, and possible mechanisms are discussed. Further research of biochar application in agriculture is called to verify the proposed mechanisms involved in biochar-soil-microbial-plant interactions for soil carbon sequestration and crop biomass and yield improvements.
基金the College Students’Innovation and Entrepreneurship Training Program of Jiangsu Province(202010298026Z)the National Natural Science Foundation of China(31972518)the National Key Research and Development Program of China(2017YFC0505502).
文摘Soil degradation threatens the forest sustainable productivity,particularly in afforestation system.Biochar derived from agroforestry waste or biomass can potentially improve the degraded forest soil and promote the tree growth.To expand the application of biochar for forestry productivity improvement,we here reviewed the effects and the underlying mechanisms of biochar on the degraded forest soil and tree growth.Totally 96 studies that conducted from pot to field investigations in China were summarized.The result suggested that biochar generally exerted positive effects on restoration of degraded forest soil such as that with compaction,acidification or soil erosion,which are mainly manifested by improving soil porosity,increasing pH,enhancing erosion resistance and mitigating greenhouse gas emissions.Furthermore,biochar incorporation promoted the growth of tested trees in most cases,which effect was mainly attributing to directly supplying nutrients,improving soil physio-chemical properties,enhancing the root’s nutrient absorption capacity,and enlarging the living space.In summary,current studies demonstrate that biochar has a unique potential for improving degraded forest soils and promoting tree growth.However,investigations on the underlying mechanisms and the long-term effects should be strengthened.
