膠州灣濱海濕地土壤有機(jī)碳時(shí)空分布及儲(chǔ)量
發(fā)布時(shí)間：2018-11-09 18:50
【摘要】：在膠州灣選取蘆葦、堿蓬、光灘及大米草4種典型濱海濕地類型,分季節(jié)和層次采集土壤樣品,測(cè)定土壤有機(jī)碳含量,分析濱海濕地土壤有機(jī)碳的時(shí)空分布及儲(chǔ)量.結(jié)果表明:垂直方向上,除光灘濕地沿剖面呈先減小后稍有上升的趨勢(shì)外,其他濕地均隨土壤深度的增加而減小;水平方向上,濕地土壤有機(jī)碳含量表現(xiàn)為大米草濕地光灘濕地堿蓬濕地蘆葦濕地;季節(jié)上,濕地土壤有機(jī)碳含量表現(xiàn)為春季夏季秋季冬季.土壤有機(jī)碳含量與土壤含鹽量、含水率、TN及C/N呈正相關(guān),與土壤容重、pH值呈負(fù)相關(guān).不同類型濕地土壤剖面有機(jī)碳密度表現(xiàn)為光灘濕地蘆葦濕地堿蓬濕地,濕地類型對(duì)土壤有機(jī)碳含量和有機(jī)碳密度分布的影響存在一定差異.因儲(chǔ)碳層厚度及儲(chǔ)碳層內(nèi)有機(jī)碳密度的差異,光灘濕地單位面積有機(jī)碳儲(chǔ)量明顯高于堿蓬和蘆葦濕地,具有較大的儲(chǔ)碳潛能,對(duì)研究區(qū)濱海濕地起到一定的碳匯作用.
[Abstract]:Four typical coastal wetland types, Reed, Suaeda salsa, Guang Tan and Rice Grass, were selected in Jiaozhou Bay. Soil samples were collected in different seasons and levels to determine soil organic carbon content, and the spatial and temporal distribution and storage of soil organic carbon in coastal wetland were analyzed. The results showed that, in the vertical direction, except for the trend of first decreasing and then slightly increasing along the section, the other wetlands decreased with the increase of soil depth. In the horizontal direction, the soil organic carbon content of the wetland is the Reed wetland of Suaeda salsa wetland, and the soil organic carbon content of the wetland is spring, summer, autumn and winter. Soil organic carbon content was positively correlated with soil salt content, moisture content, TN and C / N, but negatively correlated with soil bulk density and pH value. The soil profile organic carbon density of different types of wetland is the Reed wetland Suaeda marsh of Guangtan wetland, and the effect of wetland type on soil organic carbon content and organic carbon density distribution is different. Because of the difference of the thickness of carbon storage layer and the density of organic carbon in carbon storage layer, the storage of organic carbon per unit area of Guangtan wetland is obviously higher than that of Suaeda salsa and Reed wetland.
【作者單位】： 青島大學(xué)環(huán)境科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41101080) 山東省自然科學(xué)基金項(xiàng)目(ZR2014DQ028,ZR2015DM004)資助~~
【分類號(hào)】：S153.6
本文編號(hào)：2321271
[Abstract]:Four typical coastal wetland types, Reed, Suaeda salsa, Guang Tan and Rice Grass, were selected in Jiaozhou Bay. Soil samples were collected in different seasons and levels to determine soil organic carbon content, and the spatial and temporal distribution and storage of soil organic carbon in coastal wetland were analyzed. The results showed that, in the vertical direction, except for the trend of first decreasing and then slightly increasing along the section, the other wetlands decreased with the increase of soil depth. In the horizontal direction, the soil organic carbon content of the wetland is the Reed wetland of Suaeda salsa wetland, and the soil organic carbon content of the wetland is spring, summer, autumn and winter. Soil organic carbon content was positively correlated with soil salt content, moisture content, TN and C / N, but negatively correlated with soil bulk density and pH value. The soil profile organic carbon density of different types of wetland is the Reed wetland Suaeda marsh of Guangtan wetland, and the effect of wetland type on soil organic carbon content and organic carbon density distribution is different. Because of the difference of the thickness of carbon storage layer and the density of organic carbon in carbon storage layer, the storage of organic carbon per unit area of Guangtan wetland is obviously higher than that of Suaeda salsa and Reed wetland.
【作者單位】： 青島大學(xué)環(huán)境科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41101080) 山東省自然科學(xué)基金項(xiàng)目(ZR2014DQ028,ZR2015DM004)資助~~
【分類號(hào)】：S153.6
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