[1]贾国梅,何立,程虎,等.三峡库区不同植被土壤微生物量碳氮磷生态化学计量特征[J].水土保持研究,2016,23(04):23-27.
　JIA Guomei,HE Li,CHENG Hu,et al.Ecological Stoichiometry Characteristics of Soil Microbial Biomass Carbon, Nitrogen and Phosphorus Under Different Vegetation Covers in Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2016,23(04):23-27.
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三峡库区不同植被土壤微生物量碳氮磷生态化学计量特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年04期 页码: 23-27 栏目: 出版日期: 2016-08-28
Title:
Ecological Stoichiometry Characteristics of Soil Microbial Biomass Carbon, Nitrogen and Phosphorus Under Different Vegetation Covers in Three Gorges Reservoir Area
作者:
贾国梅1,2, 何立1, 程虎1, 王世彤1, 向翰宇1, 张雪飞1, 席颖1
1. 三峡大学 生物与制药学院, 湖北 宜昌 443002;
2. 三峡地区生态保护与治理国际联合研究中心 三峡大学, 湖北 宜昌 443002
Author(s):
JIA Guomei1,2, HE Li1, CHENG Hu1, WANG Shitong1, XIANG Hanyu1, ZHANG Xuefei1, XI Ying1
1. College of Biological and Pharmaceutical Sciences, Three Gorges University, Yichang, Hubei 443002, China;
2. International Center for Ecological Protection and Management in the Three Gorges Area, Three Gorges University, Yichang, Hubei 443002, China
关键词:
生态化学计量; 植被覆盖; 微生物量碳; 微生物量氮; 微生物量磷
Keywords:
stoichiometry; vegetation cover; MBC; MBN; MBP
分类号:
S154.36
摘要:
土壤微生物通过矿化和固持营养而显著影响土壤肥力。以湖北宜昌点军区三种植被类型（柏树、橘树、菜地）的土壤作为研究对象，对土壤微生物量碳氮磷及其生态化学计量进行了研究，探讨了不同植被覆盖土壤微生物量碳氮磷特征及它们之间的联系。结果表明：不同植被覆盖显著改变土壤微生物量碳氮磷含量，土壤微生物量碳（MBC）、氮（MBN）都是柏树地显著大于柑橘地和菜地，而菜地和柑橘地之间无显著性差异。土壤微生物量磷（MBP）的大小顺序为菜地 > 柏树地 > 橘树地。相关性分析的结果表明土壤有机碳、全氮和微生物量碳氮互相之间具有显著的正相关性（p < 0.01），土壤全磷与土壤微生物量磷之间也具有显著的正相关性（p < 0.01），这意味着土壤微生物量可以作为土壤肥力变化的指标。三种植被类型的土壤MBC/MBN之间都无显著性差异，而土壤MBC/MBP和MBN/MBP的变化顺序是橘树地 > 柏树地 > 菜地。MBC/MBP和MBN/MBP与MBP之间具有显著的负相关性（p < 0.01），而微生物碳氮与MBC/MBN，MBN/MBP和MBC/MBP之间都无显著的相关性。这意味着土壤MBC/MBP和MBN/MBP的变化主要与微生物量磷具有显著的关系。
Abstract:
Microbial mineralization and immobilization of nutrients strongly influence soil fertility. Three vegetation types (cypress site, citrus tree site and vegetable site) were chosen to determine characteristics of Soil Microbial Biomass Carbon (MBC), Nitrogen(MBN) and Phosphorus (MBP) and their relationship in Dianjun, Yichang, Hubei. The results showed that the contents of soil microbial biomass C(MBC) and N(MBN) of cypress site were significantly higher than those of vegetable site and citrus tree site which were not significant different, microbial biomass P(MBP) followed the order:vegetable site > cypress site > citrus tree site. Soil organic carbon and total nitrogen showed a significant positive relationship with MBC, N (p < 0.01). Soil total P had a significant positive relationship with MBP (p<0.01). This indicated that soil microbial biomass was a sensitive indicator of soil fertility. Although soil MBC/MBN had no significant difference among three vegetation covers, MBC/MBP and MBN/MBP followed as the order:citrus tree site > cypress site > vegetable site. MBP showed a significant positive relationship with soil MBC/MBP and MBN/MBP whereas MBC, N had no significant relationship with MBC/MBN, MBN/MBP and MBC/MBP, indicating that the changes in MBC/MBP and MBN/MBP were mainly affected by soil MBP.

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备注/Memo

收稿日期:2015-08-19;改回日期:2015-09-15。
基金项目:国家自然科学基金“消落带土壤甲烷氧化菌群落的生态位分异特征及其对水位消涨的响应机理”（51541903）
作者简介:贾国梅(1965-),女,甘肃永登人,博士,教授,主要从事土壤生态学研究,E-mail:jjjgm@126.com

更新日期/Last Update: 1900-01-01