In search of biological indicators for soil health and disease suppression
In search of biological indicators for soil health and disease suppression
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DOI：
10.1016/s0929-1393(00)00068-8
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发表时间：
2000-08-01
影响因子：
4.8
通讯作者：
Semenov, AM
中科院分区：
文献类型：
--
作者：
van Bruggen, AHC;Semenov, AM
虽然土壤质量除了生物特征外还包括物理和化学特征，但土壤健康主要是一种生态特征。生态系统健康是根据生态系统的稳定性和应对干扰或压力的恢复能力来定义的。因此，我们建议通过监测土壤微生物群落对不同强度的不同胁迫因素的反应来找到土壤健康指标。施加压力之前的响应幅度和返回当前状态的时间可以作为土壤健康的衡量标准。根部病原体是土壤微生物群落的组成部分，附生植物的出现表明生态系统陷入困境。疾病抑制可以被视为生态系统稳定和健康的体现。因此，土壤健康指标也可能充当疾病抑制指标。之前提出的土壤健康和疾病抑制指标主要是与或多或少受到干扰的土壤（从传统农业土壤到有机农业土壤、草地和森林土壤）或有利于疾病发生相关的变量列表。我们建议采用系统的生态方法来寻找土壤健康和疾病抑制的指标，即测量对各种胁迫因素的生物反应以及恢复到当前状态所需的时间。 (C) 2000 年由 Elsevier Science B.V. 出版
While soil quality encompasses physical and chemical besides biological characteristics, soil health is primarily an ecological characteristic. Ecosystem health has been defined in terms of ecosystem stability and resilience in response to a disturbance or stress. We therefore, suggest that indicators for soil health could be found by monitoring responses of the soil microbial community to the application of different stress factors at various intensities. The amplitude of a response and time to return to the current state before application of stress could serve as measures of soil health. Root pathogens are an integral part of soil microbial communities, and the occurrence of epiphytotics forms an indication of an ecosystem in distress. Disease suppression can be viewed as a manifestation of ecosystem stability and health. Thus, indicators for soil health could possibly also function as indicators for disease suppressiveness. Previously suggested indicators for soil health and disease suppression have mainly been lists of variables that were correlated to more or less disturbed soils (ranging from conventional to organic agricultural soils, grassland and forest soils) or to conduciveness to disease. We suggest a systematic ecological approach to the search for indicators for soil health and disease suppression, namely, measuring biological responses to various stress factors and the time needed to return to the current state. (C) 2000 Published by Elsevier Science B.V.