Carbon storage in wetland ecosystems is an important part of the carbon cycle of terrestrial ecosystems and provides important ecosystem services. Chaohu Wetland is a typical freshwater lake wetland in China. In this study, soil and plant samples were collected every 500 m through three sample lines of different vegetation habitats (estuarine banks, woodlands and shrub beaches) and different offshore distances, revealing the spatial distribution characteristics of soil organic carbon density (SOCD) in Chaohu wetland. The overall SOCD of Chaohu wetland was low, with different habitats ranking as Woodland > Estuary and riverside > Shrub and beach. SOCD of different offshore distances had no obvious law, and the SOCD decreased significantly with soil depth. The plant biomass was significantly higher at the woodland habitat than at other habitats. Most of soil nutrient indicators were the highest at the woodland habitat, while the estuary-riverside habitat had the highest N and P contents. Soil and plant nutrients at different offshore distances had no obvious change patterns. The contents of soil K, Ca, Mg, and N were significantly positively correlated with SOCD, but soil bulk density and pH were significantly negatively correlated with SOCD, and vegetation P content was significantly negatively correlated with SOCD. The spatial pattern of SOCD changes in this lake coastal wetland was determined by the combined effects of plant nutrients, biomass, and soil physical and chemical properties. Our results indicate Chaohu wetlands may have been experiencing serious degradation. The SOCD of Chaohu wetland is lower than that of other wetlands in China, which is mainly affected by human activities. Different offshore distances and habitat heterogeneity are the main factors affecting the soil carbon cycle of the wetland.
Carbon storage in wetland ecosystems is an important part of the carbon cycle of terrestrial ecosystems and provides important ecosystem services. Chaohu Wetland is a typical freshwater lake wetland in China.In this study, soil and plant samples were collected every 500m through three sample lines of different vegetation habitats (estuarine banks, woodlands and shrub beaches) and different offshore distances, revealing the spatial distribution characteristics of soil organic carbon density in Chaohu wetland. The results show that: 1) The overall SOCD of Chaohu Lake wetland is low, the soil carbon density of different habitats is Woodland༞Estuary and riverside༞Shrub and beach, and the SOCD of different offshore distances has no obvious law, and the SOCD content decreases significantly with the deepening of the soil layer; 2) The plant biomass of the Woodland habitat is significantly higher than that of other habitats, and its soil nutrient indicators are also the highest, and the Estuary-riverside habitat has the highest N and P content. Soil and plant nutrients at different offshore distances have no obvious changes; 3) The contents of soil K, Ca, Mg, and N are significantly positively correlated with SOCD, soil bulk density and pH are significantly negatively correlated with SOCD, and vegetation P content is significantly negatively correlated with SOCD. In a comprehensive understanding, the SOCD changes in different spaces of lake wetlands are the result of the combined effects of plant nutrients, biomass, and soil physical and chemical properties. Chaohu wetlands may experience serious degradation. This research provides scientific and technical support for the restoration, protection and scientific management of the Chaohu wetland ecosystem.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.