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首页> 外文期刊>Revista Mexicana de Biodiversidad >Soil nematodes associated with different land uses in the Los Tuxtlas Biosphere Reserve, Veracruz, Mexico
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Soil nematodes associated with different land uses in the Los Tuxtlas Biosphere Reserve, Veracruz, Mexico

机译：墨西哥韦拉克鲁斯州Los Tuxtlas生物圈保护区与不同土地利用相关的土壤线虫

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Modification of above-ground land use leads to many changes in the below-ground rhizosphere. A study was conducted of soil nematodes and their diversity associated with different land uses in the Biosphere Reserve Los Tuxtlas, Mexico. Three sites were selected to investigate 4 types of land uses: natural forest, secondary forest, pasture, and maize fields. Total abundance of nematodes and estimators based on generic and diversity indices were assessed and compared between the 4 land uses and sites. Fifty-three families and 124 genera of nematodes were identified from the study area. The dominant families were Criconematidae, Hoplolaimidae, Cephalobidae, and Tylenchidae, and the most abundant genera in this study were Helicotylenchus, Discocriconemella, Tylenchus, Steinernema and Mesocriconema . The greatest nematode abundance, generic richness, and diversity were found in natural forest, closely followed by secondary forest. Intensive (largely monocrop) agricultural systems, represented by maize fields and pasture, had low generic richness and significantly less diversity than non-disturbed systems. Most of the estimators and indices were useful in showing the significant effects of different land uses on soil nematodes in Los Tuxtlas, Mexico. This study is the first of its type to be carried out in the Biosphere Reserve Los Tuxtlas, being the first report of soil nematodes that shows the effects of the land use changes that have been made in recent years.
机译：改变地面上的土地利用导致地下根际的许多变化。在墨西哥生物圈保护区Los Tuxtlas，对土壤线虫及其与不同土地利用相关的多样性进行了研究。选择了三个地点来调查四种类型的土地利用：天然林，次生林，牧场和玉米田。对基于线虫和多样性指数的线虫和估计虫的总丰度进行了评估，并在4种土地利用和地点之间进行了比较。从研究区域确定了53个线虫科和124属线虫。优势科为C科，蛇Hop科，Ce科和T科，而本研究中最丰富的属是螺旋藻，盘Disc，泰勒虫，剑孢菌和中cri。天然林中线虫的丰度，通用性丰富度和多样性最大，紧随其后的是次生林。以玉米田和牧场为代表的集约化（大部分为单作）农业系统的遗传多样性低，而与未受干扰的系统相比，多样性却要低得多。大多数估算器和指数可用于显示墨西哥洛斯图斯特拉斯不同土地利用方式对土壤线虫的重大影响。这项研究是在生物圈保护区Los Tuxtlas中进行的首次此类研究，这是土壤线虫的第一份报告，该报告显示了近年来土地利用变化的影响。

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