Distribution characteristics of soil organic carbon and its influencing factors in different swamp wetland types in arid region

doi:10.14088/j.cnki.issn0439-8114.2020.18.011

Abstract

Abstract: Taking wetlands in arid areas as the research object, the distribution characteristics and influencing factors of soil organic carbon in three types of wetlands： Herb marshes, seasonal salt-water marshes and inland salt marshes were studied. The results showed that the soil organic carbon content of the 0~100 cm soil layer of herbaceous marsh, seasonal saltwater marsh and inland salt marsh were 1.19~49.03, 1.62~101.14, 2.61~23.77 g/kg, respectively. The organic carbon content of seasonal saltwater marshes was significantly higher than that of herbaceous marshes; The soil organic carbon content of herbaceous marshes was significantly positively correlated with soil moisture, total nitrogen, and N/P. Seasonal saltwater the soil organic carbon of marsh wetlands was significantly correlated with soil moisture, bulk density, total nitrogen and N/P, and pH showed a very significant negative correlation. Inland salt marsh soil organic carbon was significantly correlated with total nitrogen was extremely significant positive correlation. Combined with the principal component analysis, three types of wetland F₁ contribution rate was highly correlated with soil moisture. It was proved that soil moisture was the key leading factor affecting the accumulation of soil organic carbon.

Key words: arid wetland, soil organic carbon, distribution characteristics, soil moisture, marsh wetland

CLC Number:

S153.6

CHEN Tao. Distribution characteristics of soil organic carbon and its influencing factors in different swamp wetland types in arid region[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(18): 54-62.

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