Effect of ground water level on the release of carbon, nitrogen and phosphorus during decomposition of Carex. cinerascens Kukenth in the typical seasonal floodplain in dry season

doi:10.1080/02705060.2019.1584128

	Effect of ground water level on the release of carbon, nitrogen and phosphorus during decomposition of Carex. cinerascens Kukenth in the typical seasonal floodplain in dry season
	Zhang, Quanjun 1,2; Zhang, Guangshuai 3,4; Yu, Xiubo 1,2; Liu, Yu 1; Xia, Shaoxia 1; Ya, Li 1,2; Hu, Binhua 5; Wan, Songxian 5
刊名	JOURNAL OF FRESHWATER ECOLOGY
	2019
卷号	34 期号:1 页码:305-322
关键词	Litter decomposition groundwater level Poyang Lake dry season Carex cinerascens Kukenth
ISSN号	0270-5060
DOI	10.1080/02705060.2019.1584128
通讯作者	Yu, Xiubo(yuxb@igsnrr.ac.cn)
英文摘要	From November 2016 to April 2017, the decomposition of Carex. cinerascens Kukenth litter along the natural gradients of groundwater level at Poyang Lake wetland beach were simulated using litterbag technique. The depth of the underground water table of the G-L was -25 to -50 cm, while those of G-ML, G-MH and G-H ranged from -15 to -25 cm, -5 to -15 cm, and -5 to 5, respectively. Additionally, the dry weight loss rate increased gradually with increasing days, with that of G-H being highest, followed by G-MH, G-ML and G-L. The decomposition rate of the four gradients increased rapidly to day 30, then decreased slowly until stabilizing. Additionally, the decomposition rate was highest in G-H, followed by G-MH, G-ML and G-L. The Olson negative exponential model could simulate the decomposition good and predicted the time required for 50% decomposition of the G-H, G-MH, G-ML and G-L gradients was about 166, 197, 205 and 247 days, respectively, while required for 95% was about 1.97, 2.23, 2.43 and 2.92 years, respectively. The overall trend in the relative return index of carbon, nitrogen and phosphorus increased with increasing decomposition days, and the order was G-H > G-MH > G-ML > G-L. Differences in soil pH, bulk density, soil total nitrogen, soil organic matter, microbial biomass carbon and soil sand content in the decomposed environment due to groundwater had a significant impact on decomposition and nutrient release. The relative return index of carbon was significantly positively correlated with soil pH, but significantly negatively correlated with soil bulk density, soil nitrogen content, microbial biomass nitrogen and soil organic matter. The above results show that groundwater is the key factor influencing litter decomposition in Poyang Lake wetland during the dry season, with higher groundwater levels promoting the decomposition.
资助项目	National Natural Science Foundation of China[41471088] ; National Natural Science Foundation of China[41701212] ; local cooperation project - Research and Development of Aquatic Ecological Comprehensive Model of Poyang Lake[JXPJB20160101]
WOS关键词	LEAF-LITTER DECOMPOSITION ; LIGNIN DEGRADATION ; ORGANIC-MATTER ; DYNAMICS ; WETLANDS ; AVAILABILITY ; COMMUNITIES ; TEMPERATURE ; INUNDATION ; VEGETATION
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000462642100001
资助机构	National Natural Science Foundation of China ; local cooperation project - Research and Development of Aquatic Ecological Comprehensive Model of Poyang Lake
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/48591]
专题	中国科学院地理科学与资源研究所
通讯作者	Yu, Xiubo
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Natl Marine Environm Monitoring Ctr, Dalian, Peoples R China 4.State Ocean Adm Peoples Republ China, Key Lab Sea Field Management Technol, Dalian, Peoples R China 5.Nanji Wetland Natl Nat Reserve Agcy, Nanchang, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Quanjun,Zhang, Guangshuai,Yu, Xiubo,et al. Effect of ground water level on the release of carbon, nitrogen and phosphorus during decomposition of Carex. cinerascens Kukenth in the typical seasonal floodplain in dry season[J]. JOURNAL OF FRESHWATER ECOLOGY,2019,34(1):305-322.
APA	Zhang, Quanjun.,Zhang, Guangshuai.,Yu, Xiubo.,Liu, Yu.,Xia, Shaoxia.,...&Wan, Songxian.(2019).Effect of ground water level on the release of carbon, nitrogen and phosphorus during decomposition of Carex. cinerascens Kukenth in the typical seasonal floodplain in dry season.JOURNAL OF FRESHWATER ECOLOGY,34(1),305-322.
MLA	Zhang, Quanjun,et al."Effect of ground water level on the release of carbon, nitrogen and phosphorus during decomposition of Carex. cinerascens Kukenth in the typical seasonal floodplain in dry season".JOURNAL OF FRESHWATER ECOLOGY 34.1(2019):305-322.