...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil Biology & Biochemistry >Rhizosphere soil microbial index of tree species in a coal mining ecosystem
【24h】

Rhizosphere soil microbial index of tree species in a coal mining ecosystem

机译：煤炭开采生态系统中树种的根际土壤微生物指数

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Microbial characterization of the tree rhizosphere provides important information relating to the screening of tree species for re-vegetation of degraded land. Rhizosphere soil samples collected from a few predominant tree species growing in the coal mining ecosystem of Dhanbad, India, were analyzed for soil organic carbon (SOC), mineralizable N, microbial biomass carbon (MBC), active microbial biomass carbon (AMBC), basal soil respiration (BSR), and soil enzyme activities (dehydrogenase, urease, catalase, phenol oxidase, and peroxidase). Among the tree species studied, Aegle marmelos recorded the highest value for MBC (590 mg kg-1), urease (190.5 og NH4+-N g-1 h-1), catalase (513 og H2O2 g-1 h-1), dehydrogenase (92.3 og TPF g-1 h-1), phenol oxidase (0.057 oM g-1 h-1) and BSR/AMBC (0.498 mg CO2-C mg biomass-1 day-1); Tamarindus indica for mineralizable N (69.5 mg kg-1); Morus alba for catalase (513 og H2O2 g-1 h-1) and phenol oxidase (0.058 oM g-1 h-1); Tectona grandis for peroxidase (0.276 oM g-1 h-1), AMBC/MBC (99.4%), and BSR/MBC (0.108 mg CO2-C mg biomass-1 day-1); Ficus religiosa for AMBC (128.4 mg kg-1) and BSR (12.85 mg CO2-C kg-1 day-1); Eugenia jambolana for MBC/SOC (8.03%); Butea monosoperma for AMBC/SOC (1.32%) and Azadirachta indica for BSR/AMBC (0.1134 mg CO2-C mg biomass-1 day-1). Principal component analysis was employed to derive a rhizosphere soil microbial index (RSMI) and accordingly, dehydrogenase, BSR/MBC, MBC/SOC, EC, phenol oxidase and AMBC were found to be the most critical properties. The observed values for the above properties were converted into a unitless score (0-1.00) and the scores were integrated into RSMI. The tree species could be arranged in decreasing order of the RSMI as: A. marmelos (0.718), A. indica (0.715), Bauhinia bauhinia (0.693), B. monosperma (0.611), E. jambolana (0.601), Moringa oleifera (0.565), Dalbergia sissoo (0.498), T. indica (0.488), Morus alba (0.415), F. religiosa (0.291), Eucalyptus sp. (0.232) and T. grandis (0.181). It was concluded that tree species in coal mining areas had diverse effects on their respective rhizosphere microbial processes, which could directly or indirectly determine the survival and performance of the planted tree species in degraded coal mining areas. Tree species with higher RSMI values could be recommended for re-vegetation of degraded coal mining area.
机译：树木根际的微生物特征提供了有关筛选树木物种以重新植被退化土地的重要信息。分析了从印度丹巴德煤炭开采生态系统中生长的几种主要树种收集的根际土壤样品的土壤有机碳（SOC），可矿化氮，微生物生物量碳（MBC），活性微生物生物量碳（AMBC），基础土壤呼吸（BSR）和土壤酶活性（脱氢酶，脲酶，过氧化氢酶，苯酚氧化酶和过氧化物酶）。在研究的树种中，Aegle marmelos的MBC（590 mg kg-1），脲酶（190.5 og NH4 + -N g-1 h-1），过氧化氢酶（513 og H2O2 g-1 h-1）的最高记录，脱氢酶（92.3克TPF g-1 h-1），苯酚氧化酶（0.057 oM g-1 h-1）和BSR / AMBC（0.498 mg CO2-C mg生物量-1 day-1）;罗望子中可矿化氮（69.5 mg kg-1）;桑树中的过氧化氢酶（513 ug H2O2 g-1 h-1）和苯酚氧化酶（0.058 oM g-1 h-1）; Tectona grandis的过氧化物酶（0.276 oM g-1 h-1），AMBC / MBC（99.4％）和BSR / MBC（0.108 mg CO2-C mg生物量-1 day-1）;用于AMBC（128.4 mg kg-1）和BSR（12.85 mg CO2-C kg-1 day-1）的菩提树; MBC / SOC的Eugenia jambolana（8.03％）; AMSR / SOC（1.32％）的丁和BSR / AMBC（0.1134 mg CO2-C mg生物量-1 day-1）的印A。利用主成分分析法得出了根际土壤微生物指数（RSMI），因此，脱氢酶，BSR / MBC，MBC / SOC，EC，酚氧化酶和AMBC是最关键的特性。将上述属性的观察值转换为无单位得分（0-1.00），并将这些得分整合到RSMI中。这些树种可以按RSMI的降序排列：A. marmelos（0.718），A. indica（0.715），Bauhinia bauhinia（0.693），B. monosperma（0.611），james E. jambolana（0.601），Moringa oleifera （0.565），黄檀（0.498），印度教丁香（0.488），桑树（0.415），菩提树（0.291），桉树（Eucalyptus sp。） （0.232）和T. grandis（0.181）。得出的结论是，煤矿区的树种对它们各自的根际微生物过程具有不同的影响，这可以直接或间接地确定退化的煤矿区种植的树种的生存和性能。可以建议使用具有较高RSMI值的树种来重新植被退化的采煤区。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号