[1]余旋,刘旭,刘金良,等. 黄土高原丘陵区沙棘人工林土壤微生物群落演变特征研究[J].西北林学院学报,2015,30(05):1-6.[doi:doi:10.3969/j.issn.1001-7461.2015.05.01]
 YU Xuan,LIU Xu,LIU Jin-liang,et al. Evolution of Soil Microbial Community Structure under Hippophae rhamnoides Plantations with Different Ages in the Hilly and Gully Regions of the Loess Plateau[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2015,30(05):1-6.[doi:doi:10.3969/j.issn.1001-7461.2015.05.01]
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 黄土高原丘陵区沙棘人工林土壤微生物群落演变特征研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第30卷
期数:
2015年05期
页码:
1-6
栏目:
出版日期:
2015-09-30

文章信息/Info

Title:
 Evolution of Soil Microbial Community Structure under Hippophae rhamnoides Plantations with Different Ages in the Hilly and Gully Regions of the Loess Plateau
文章编号:
1001-7461(2015)05-0001-06
作者:
 余旋12刘旭3刘金良1张顺祥1于泽群1赵忠12*
(1.西北农林科技大学 林学院,陕西 杨陵 712100;2.教育部西部环境与生态重点实验室,陕西 杨陵 712100;3.西北农林科技大学 葡萄酒学院,陕西 杨陵 712100)
Author(s):
 YU Xuan12 LIU Xu3 LIU Jin-liang1 ZHANG Shun-xiang1 YU Ze-qun1 ZHAO Zhong12*
 (1. College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China; 2. Key Laboratory of Environment and Ecology of Education Ministry in West China, Yangling, Shaanxi 712100, China; 3. College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China)
关键词:
 沙棘人工林土壤微生物种群养分特性林龄
Keywords:
 Hippophae rhamnoides plantation soil microbial community soil nutrient forest age
分类号:
S793.601
DOI:
doi:10.3969/j.issn.1001-7461.2015.05.01
文献标志码:
A
摘要:
 采用时空互代法,以不同林龄(8、13、18 a)的沙棘人工林为研究对象,分析沙棘人工林在不同生长发育进程中土壤微生物种群结构及土壤养分特性的变化规律。结果表明,1)沙棘人工林磷脂脂肪酸总量、细菌特征脂肪酸总量、真菌特征脂肪酸总量均随着林龄的增长而增加。磷脂脂肪酸总量、细菌总量在成熟林时达到最大值。真菌总量在中龄林时出现最大值,在进入成熟林后略有下降;2)不同林龄的沙棘人工林地土壤养分含量存在明显差异。土壤有机碳、全氮、全磷、碱解氮及速效磷含量随着林龄增加呈显著上升趋势,并于成熟林时达到最大值;3)土壤微生物总PLFA量、土壤细菌PLFA量与土壤有机碳、全氮、碳氮比、全磷、碱解氮、速效磷呈显著正相关关系。真菌PLFA量与土壤全氮、碱解氮呈显著正相关关系,与土壤速效钾呈极显著负相关关系。由此可见,林龄对土壤微生物种群结构和养分特性有显著影响。
Abstract:
This study investigated the dynamics of soil microbial community structure and soil nutrition under Hippophae rhamnoides plantations with different ages (8 a, 13 a, 18 a). The results showed that, 1) the quantity of total PLFAs, bacterial PLFAs were highest in plantation of 18 a H. rhamnoides. However, the amount of fungi PLFAs was highest in the 13 a plantation and slightly decreased in the 18 a plantation. 2) There were significant differences among the three H. rhamnoides plantations. The content of soil organic carbon, total nitrogen, total phosphorus, available nitrogen and phosphorus significantly increased with forest age. 3) The content of total PLFAs and bacterial PLFAs exhibited significantly positive correlations with soil organic carbon, total nitrogen, carbon nitrogen ratio, total phosphorus, available nitrogen and phosphorus. The fungi PLFAs were positively correlated with total nitrogen and available nitrogen, but negatively correlated with available potassium. In conclusion, forest age could significantly affect the soil microbial community structure through the soil chemical properties.

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备注/Memo

备注/Memo:
 收稿日期:2014-11-12修回日期:2014-12-22
基金项目:教育部博士点基金(20120204120043);陕西省自然基金(2013JQ3004);国家自然基金青年项目(305021210);中央高校基本业务经费(QN2011160)。
作者简介:余旋,女,讲师,研究方向:土壤微生物生态。E-mail:yux@nwsuaf.edu.cn
*通信作者:赵忠,男,教授,博士生导师,研究方向:干旱半干旱地区植被恢复与重建。E-mail:zhaozh@nwsuaf.edu.cn
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