Decomposition dynamics and the consequential impact of common plant litter on water quality in Jiangnan region
To investigate the impact of litter decomposition from common plants in the Jiangnan region on nearby landscape aquatic ecosystems throughout various seasons,the decomposition process of litter from three prevalent species including salix,cinnamomum and hypericum is simulated in laboratory,and the degree and rate of plant litter decomposition under varying temperature conditions,their effects on the levels of total nitrogen and total phosphorus in the overlying water are also examined.The findings show that the highest rates of litter decomposi-tion and degree of decomposition occur at a temperature of 15 ℃;a warmer environment significantly promotes litter decomposition compared to lower temperature settings;the release of both nitrogen and phosphorus into the overlying water from different litter types follows a distinctive release-accumulation-re-release pattern.It is im-portant to note that the release of phosphorus exceeds that of nitrogen,with peak phosphorus release occurring within just one week.The characteristic soft texture and thin cuticle of the Salix leaf litter present the rapid re-lease of nitrogen and phosphorus,a phenomenon consistent with findings in this paper and other previous studies.This research will shed light on the intricate dynamics of litter decomposition from common Jiangnan plants and its substantial implications for nearby water bodies,especially in the context of seasonal variations.
万方数据
维普
