General relationships between abiotic soil properties and soil biota across spatial scales and different land-use types.
General relationships between abiotic soil properties and soil biota across spatial scales and different land-use types.
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DOI：
10.1371/journal.pone.0043292
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Schrumpf M
中科院分区：
文献类型：
--
作者：
Birkhofer K;Schöning I;Alt F;Herold N;Klarner B;Maraun M;Marhan S;Oelmann Y;Wubet T;Yurkov A;Begerow D;Berner D;Buscot F;Daniel R;Diekötter T;Ehnes RB;Erdmann G;Fischer C;Foesel B;Groh J;Gutknecht J;Kandeler E;Lang C;Lohaus G;Meyer A;Nacke H;Näther A;Overmann J;Polle A;Pollierer MM;Scheu S;Schloter M;Schulze ED;Schulze W;Weinert J;Weisser WW;Wolters V;Schrumpf M
解释大空间尺度和不同土地利用类型上土壤性质和土壤生物群之间关系的原理很少。在这里，我们使用德国三个纬度梯度地区52个不同管理方式的草原和森林土壤的数据来寻找这些一般关系。我们假设，在提取了由地点和土地利用类型解释的变异后，土壤性质仍然解释了土壤生物群丰度和多样性的显著变异比例。如果对每个预测组分别分析预测因子和土壤生物之间的关系，土壤性质解释了土壤生物群丰度和多样性的最大变化量，其次是土地利用类型和采样地点。在提取了源于地点或土地利用的差异后，非生物土壤性质解释了真菌、中型和大型动物的显著差异，但不能解释酵母或细菌生物量或多样性的差异。硝酸盐或氮素浓度与真菌生物量呈正相关，而硝酸盐浓度与弹尾目和螨类的丰富度以及森林和草原土壤中的多足动物物种丰富度呈负相关。蚯蚓物种丰富度与土壤粘粒含量呈正相关，与样点位置和土地利用类型无关。我们的研究表明，在考虑了采样点和土地利用类型之间的巨大差异造成的异质性后，土壤性质仍然解释了真菌和土壤动物丰度或多样性的很大比例的变化。然而，土壤生物群也与在更大空间尺度上作用的过程有关，细菌或土壤酵母菌与土壤性质的关系很弱。因此，我们认为，土壤性质和土壤生物群之间更一般的关系只能从未来考虑更大空间尺度和不同土地利用类型的研究中得出。
Very few principles have been unraveled that explain the relationship between soil properties and soil biota across large spatial scales and different land-use types. Here, we seek these general relationships using data from 52 differently managed grassland and forest soils in three study regions spanning a latitudinal gradient in Germany. We hypothesize that, after extraction of variation that is explained by location and land-use type, soil properties still explain significant proportions of variation in the abundance and diversity of soil biota. If the relationships between predictors and soil organisms were analyzed individually for each predictor group, soil properties explained the highest amount of variation in soil biota abundance and diversity, followed by land-use type and sampling location. After extraction of variation that originated from location or land-use, abiotic soil properties explained significant amounts of variation in fungal, meso- and macrofauna, but not in yeast or bacterial biomass or diversity. Nitrate or nitrogen concentration and fungal biomass were positively related, but nitrate concentration was negatively related to the abundances of Collembola and mites and to the myriapod species richness across a range of forest and grassland soils. The species richness of earthworms was positively correlated with clay content of soils independent of sample location and land-use type. Our study indicates that after accounting for heterogeneity resulting from large scale differences among sampling locations and land-use types, soil properties still explain significant proportions of variation in fungal and soil fauna abundance or diversity. However, soil biota was also related to processes that act at larger spatial scales and bacteria or soil yeasts only showed weak relationships to soil properties. We therefore argue that more general relationships between soil properties and soil biota can only be derived from future studies that consider larger spatial scales and different land-use types.
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