A field experiment was carried out to explore surface soil mircro-biomass carbon （MBC）. The results showed that the difference of soil MBC was significant among three vegetation types in five sample spots in July. T...A field experiment was carried out to explore surface soil mircro-biomass carbon （MBC）. The results showed that the difference of soil MBC was significant among three vegetation types in five sample spots in July. The order of surface soil MBC was： Aquaculture pond reed （sample 2）〉 reed of river bank （sample 5）〉 sea- plant（sample 5）〉 river flat（sample 4）〉 The alkaline（sample 1）. There is a very sig- nificant correlation among the soil MBC, the water content of soil and the content of organic matter. Among wetland plants, reed is kind of plant content of high ground biomass and below-ground biomass,especially the MBC planted in wetland is high- er, which shows that compared with common plants, reed is more conducive to the accumulation of soil MBC and has an important effect to wetland protecting and re- covery of function of ecosystem.展开更多
Taking surrounding woodland soils of Cedrus deodara(Roxb.)G.Don,Prunus ceraifera cv.Pissardii,Ginkgo biloba L.and Ligustrum lucidum in Zhoushan Forest Park of Henan Province as the research objects,the physicochemical...Taking surrounding woodland soils of Cedrus deodara(Roxb.)G.Don,Prunus ceraifera cv.Pissardii,Ginkgo biloba L.and Ligustrum lucidum in Zhoushan Forest Park of Henan Province as the research objects,the physicochemical properties of sample plots were investigated,and the contents of soil microbial biomass carbon,nitrogen,phosphorus and total soil nutrients were determined.The results showed that the carbon-nitrogen ratios and carbon–phosphorus ratios were 8.0-11.4 and 17.1-25.3,respectively;the percentages of carbon,nitrogen and phosphorus in soil organic carbon(SOC),total nitrogen(TN)and total phosphorus(TP)were 2.84%-5.1%,2.69%-4.44%and 2.19%-5.62%,respectively.The carbon–nitrogen ratio and carbon-phosphorus ratio of P.ceraifera,G.biloba and L.lucidum forests were signifi cantly lower than that of C.deodara forest(P<0.05).The MBC/SOC,MBN/TN and MBP/TP ratios of G.biloba forest were the highest,which had signifi cant difference with those of other tree species(P<0.05).The contents of carbon,nitrogen and phosphorus were extremely or signifi cantly correlated with SOC,TN,TP,tree species and human disturbance,but had no correlation with soil pH,slope,slope direction,etc.Tree species and human disturbance also significantly affected the physical and chemical properties closely related to soil microbial biomass.展开更多
Soils under broad-leaved,masson pine,Chinese fir and bamboo forests in the area of Huzhou,Zhejiang were collected and analyzed in January 2000.Soil total organic carbon(TOC) under broad-leaved and bamboo forests were ...Soils under broad-leaved,masson pine,Chinese fir and bamboo forests in the area of Huzhou,Zhejiang were collected and analyzed in January 2000.Soil total organic carbon(TOC) under broad-leaved and bamboo forests were considerately higher than(P<0.01)those under masson pine and Chinese fir.There was no significant differences in microbial biomass carbon(MBC) in soils among various types of vegetation,however,the bamboo stands constituted a lower(P<0.05) proportion of MBC compared with broad-leaved forest,masson pine and Chinese fir were similar in MBC to TOC,indicating that intensive management in bamboo stand reduced the proportion of soil MBC in TOC.MBC in soils under broad-leaved forest,masson pine forest and Chinese fir forest had strong positive relationships with the corresponding TOCs,the correlation coefficients were respective 0.744 4,0.648 4 and 0.552 1.It was found that soil easily oxidizable carbon(EOC) in bamboo forest was much higher than those in the other 3 forests.The higher percentages of EOC were detected from soils under bamboo forest(52.40%) and Chinese fir forest(50.50%) compared with broad-leaved forest(48.90%) and masson pine forest(45.74%).Soil EOC for all 4 forests were closely correlated(P<0.01)with the correspondent TOCs.展开更多
基金Supported by National Natural Science Foundation of China(41101080)Provincial Natural Science Foundation of Shandong(ZR2011QD009)+2 种基金Provincial College and University Science and Technology Plan of Shandong(J12LC04)Qingdao Public Domain of Science and Technology Support Project(12-1-3-71-nsh)Excellent Graduate Papers of Qingdao University Engagement Foundation(2014)~~
文摘A field experiment was carried out to explore surface soil mircro-biomass carbon （MBC）. The results showed that the difference of soil MBC was significant among three vegetation types in five sample spots in July. The order of surface soil MBC was： Aquaculture pond reed （sample 2）〉 reed of river bank （sample 5）〉 sea- plant（sample 5）〉 river flat（sample 4）〉 The alkaline（sample 1）. There is a very sig- nificant correlation among the soil MBC, the water content of soil and the content of organic matter. Among wetland plants, reed is kind of plant content of high ground biomass and below-ground biomass,especially the MBC planted in wetland is high- er, which shows that compared with common plants, reed is more conducive to the accumulation of soil MBC and has an important effect to wetland protecting and re- covery of function of ecosystem.
基金National Natural Science Foundation of China(31670616).
文摘Taking surrounding woodland soils of Cedrus deodara(Roxb.)G.Don,Prunus ceraifera cv.Pissardii,Ginkgo biloba L.and Ligustrum lucidum in Zhoushan Forest Park of Henan Province as the research objects,the physicochemical properties of sample plots were investigated,and the contents of soil microbial biomass carbon,nitrogen,phosphorus and total soil nutrients were determined.The results showed that the carbon-nitrogen ratios and carbon–phosphorus ratios were 8.0-11.4 and 17.1-25.3,respectively;the percentages of carbon,nitrogen and phosphorus in soil organic carbon(SOC),total nitrogen(TN)and total phosphorus(TP)were 2.84%-5.1%,2.69%-4.44%and 2.19%-5.62%,respectively.The carbon–nitrogen ratio and carbon-phosphorus ratio of P.ceraifera,G.biloba and L.lucidum forests were signifi cantly lower than that of C.deodara forest(P<0.05).The MBC/SOC,MBN/TN and MBP/TP ratios of G.biloba forest were the highest,which had signifi cant difference with those of other tree species(P<0.05).The contents of carbon,nitrogen and phosphorus were extremely or signifi cantly correlated with SOC,TN,TP,tree species and human disturbance,but had no correlation with soil pH,slope,slope direction,etc.Tree species and human disturbance also significantly affected the physical and chemical properties closely related to soil microbial biomass.
文摘Soils under broad-leaved,masson pine,Chinese fir and bamboo forests in the area of Huzhou,Zhejiang were collected and analyzed in January 2000.Soil total organic carbon(TOC) under broad-leaved and bamboo forests were considerately higher than(P<0.01)those under masson pine and Chinese fir.There was no significant differences in microbial biomass carbon(MBC) in soils among various types of vegetation,however,the bamboo stands constituted a lower(P<0.05) proportion of MBC compared with broad-leaved forest,masson pine and Chinese fir were similar in MBC to TOC,indicating that intensive management in bamboo stand reduced the proportion of soil MBC in TOC.MBC in soils under broad-leaved forest,masson pine forest and Chinese fir forest had strong positive relationships with the corresponding TOCs,the correlation coefficients were respective 0.744 4,0.648 4 and 0.552 1.It was found that soil easily oxidizable carbon(EOC) in bamboo forest was much higher than those in the other 3 forests.The higher percentages of EOC were detected from soils under bamboo forest(52.40%) and Chinese fir forest(50.50%) compared with broad-leaved forest(48.90%) and masson pine forest(45.74%).Soil EOC for all 4 forests were closely correlated(P<0.01)with the correspondent TOCs.
