Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Soil and Water Conservation》 2018-03
Add to Favorite Get Latest Update

Effects of Crabs on the Variation of Soil Available Nutrients in Spartina Alterniflora Wetland in Minjiang River Estuary

CHEN Xiaoxuan;CHEN Shuyun;ZENG Congsheng;WANG Weiqi;Institute of Geography,Fujian Normal University;Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education,Fujian Normal University;  
In order to clarify the effects of crab activities on the changes of available nutrients in wetland soils,soil DOC,MBC,NH_4~+-N,NO_3~--N,Fe and their valence contents under the interference of crabs from different tidal flats in Minjiang River estuarine wetlands were measured.The results showed that the average contents of DOC and MBC in soil were 95.98 and 11.13 mg/kg,respectively in the crab group and106.99 and 7.54 mg/kg in the control group,respectively(P0.05).The content of MBC in soil of crab group was higher than that of control group(P0.05).The highest and lowest values of the two contents appeared in summer and winter respectively,and were significantly higher in summer than in other seasons(P 0.05).The average values of soil NH_4~+-N and soil NO_3~--N in the crab group were 22.45 and 1.08 mg/kg,respectively,and those in the control group were 23.65 and 1.44 mg/kg.The content of NH_4~+-N in soil of crab group was lower than that of control group(P0.05),while the content of NO_3~--N in soil of crab group was lower than that of control group(P0.05).The contents of NH_4~+-N and NO_3~--N in soil were significantly different in different seasons(P0.01).The soil total iron content in crab group was slightly higher than that in control group(P0.05).The content of Fe~(2+) in soil of crab group was significantly higher than that in control group(P0.05).There was no significant difference in soil Fe~(3+) content between crab group and control group(P0.05).In different seasons,soil total Fe,Fe2+and Fe3+contents were significantly different(P0.01).
【Fund】: 国家自然科学基金项目(41571287);; 福建省高校杰出青年科研人才培育计划项目(2017)
【CateGory Index】: S158
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved