文献类型：期刊文献

英文题名：Effects of Plant Growth Form and Water Substrates on the Decomposition of Submerged Litter: Evidence of Constructed Wetland Plants in a Greenhouse Experiment

作者：Ping, Yunmei[1,2,3] Pan, Xu[1,2,3] Cui, Lijuan[1,2,3] Li, Wei[1,2,3] Lei, Yinru[1,2,3] Zhou, Jian[1,2] Wei, Jiaming[1,2]

第一作者：Ping, Yunmei

通信作者：Cui, LJ[1];Cui, LJ[2];Cui, LJ[3]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China;[3]Beijing Hanshiqiao Natl Wetland Ecosyst Res Stn, Beijing 101399, Peoples R China

年份：2017

卷号：9

期号：11

外文期刊名：WATER

收录：;EI(收录号：20174404361884);Scopus(收录号：2-s2.0-85032570278);WOS:【SCI-EXPANDED(收录号:WOS:000416798300013)】；

基金：This study was supported by the Fundamental Research Funds for the Central Non-Profit Research Institution of CAF (CAFYBB2017SY045). We thank Mengjie Li, Shujiao Fan and others for the assistance of analyzing plant qualities. We also thank Yaqiong Zhang for helping with the experiment.

语种：英文

外文关键词：constructed wetlands; decomposition; ecosystem functioning and services; plant litter

摘要：Wetland plants are important components in constructed wetlands (CWs), and one of their most important functions in CWs is to purify the water. However, wetland plant litter can also increase eutrophication of water via decomposition and nutrient release, and few studies have focused on the interspecific variation in the decomposition rate and nutrient release of multiple plant species in CWs. Here a greenhouse litter-bag experiment was conducted to quantify the decomposition rates and nutrient release of 7 dominant macrophytes (2 floating plants and 5 emergent plants) in three types of water substrate. The results showed that plant litter species and growth forms significantly affected the litter mass losses. The nutrient release was significantly different among plant litter species, but not between floating and emergent plants. Litter traits, such as litter lignin, total nitrogen (TN) and total phosphorus (TP) can well predict the decomposition rates of submerged litter. These results indicated that submerging litter in water did not change the relationships between litter traits and litter decomposition rates, and leaching might play a more important role in the decomposition of submerged litter in CWs than that in other terrestrial ecosystems. These findings can provide suggestions for managers about the maintenance of constructed wetlands.