Effects of Crabs on the Variation of Soil Available Nutrients in

CHEN Xiaoxuan; CHEN Shuyun; ZENG Congsheng; WANG Weiqi

doi:10.13870/j.cnki.stbcxb.2018.03.037

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Effects of Crabs on the Variation of Soil Available Nutrients in

更新时间：2025-03-12

- Effects of Crabs on the Variation of Soil Available Nutrients in
- Vol. 32, Issue 3, Pages: 242-248(2018)
- 作者机构：
  
  1. 福建师范大学地理研究所,福州,350007
  2. 福建师范大学, 湿润亚热带生态地理过程教育部重点实验室,福州,350007
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.03.037
  CLC：
- Published：2018
- 稿件说明：
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CHEN Xiaoxuan, CHEN Shuyun, ZENG Congsheng, et al. Effects of Crabs on the Variation of Soil Available Nutrients in[J]. 2018, 32(3): 242-248.
DOI：

CHEN Xiaoxuan, CHEN Shuyun, ZENG Congsheng, et al. Effects of Crabs on the Variation of Soil Available Nutrients in[J]. 2018, 32(3): 242-248. DOI： 10.13870/j.cnki.stbcxb.2018.03.037.

摘要

为阐明螃蟹活动对湿地土壤活性养分含量变化的影响，对闽江河口湿地不同潮滩螃蟹干扰下的土壤DOC、MBC、NH4+-N、NO3--N、Fe及其价态含量特征进行测定和分析。结果表明：有螃蟹组土壤DOC和MBC含量分别为95.98，11.13 mg/kg，对照组含量分别为106.99，7.54 mg/kg，螃蟹组土壤DOC含量略低于对照组（P>0.05），螃蟹组土壤MBC含量高于对照组（P<0.05）；两者含量最高值和最低值分别出现在夏季和冬季，且夏季显著高于其他季节（P<0.05）。螃蟹组土壤NH4+-N和土壤NO3--N含量分别为22.45，1.08 mg/kg，对照组含量分别为23.65，1.44 mg/kg，螃蟹组土壤NH4+-N含量低于对照组（P<0.05），螃蟹组土壤NO3--N含量低于对照组（P<0.05）；不同季节，土壤NH4+-N和NO3--N含量存在显著差异（P<0.01）。螃蟹组土壤总铁含量略高于对照组（P>0.05）；螃蟹组土壤Fe2+含量显著高于对照组（P<0.05）；螃蟹组和对照组土壤Fe3+含量差异不明显（P>0.05）。不同季节，土壤总Fe、Fe2+和Fe3+含量存在显著差异（P<0.01）。

Abstract

In order to clarify the effects of crab activities on the changes of available nutrients in wetland soils

soil DOC

MBC

NH4+-N

NO3--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 and 106.99 and 7.54 mg/kg in the control group

respectively (P<0.05). The content of MBC in soil of crab group was higher than that of control group (P<0.05). 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 NH4+-N and soil NO3--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 NH4+-N in soil of crab group was lower than that of control group (P<0.05)

while the content of NO3--N in soil of crab group was lower than that of control group (P<0.05). The contents of NH4+-N and NO3--N in soil were significantly different in different seasons (P<0.01). The soil total iron content in crab group was slightly higher than that in control group (P>0.05). The content of Fe2+ in soil of crab group was significantly higher than that in control group (P<0.05). There was no significant difference in soil Fe3+ content between crab group and control group (P>0.05). In different seasons

soil total Fe

Fe2+ and Fe3+ contents were significantly different (P<0.01).

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