Evidence for functional state transitions in intensively-managed soil ecosystems.
Evidence for functional state transitions in intensively-managed soil ecosystems.
复制标题
在强化管理的土壤生态系统中的功能状态过渡的证据。
DOI：
10.1038/s41598-018-29925-2
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发表时间：
2018-08-01
影响因子：
4.6
通讯作者：
Whitmore AP
中科院分区：
文献类型：
--
作者：
Todman LC;Fraser FC;Corstanje R;Harris JA;Pawlett M;Ritz K;Whitmore AP
土壤对陆地生态系统的功能和粮食安全至关重要，因此其对干扰的复原力至关重要。此外，它们提供了复杂自然系统的有效模型，以在实验上易于处理的短时间尺度上探索弹性概念。我们研究了来自不同的土地利用历史的长期草，耕地和休耕，以确定极端干燥和再湿润的制度是否会提示系统进入替代稳定状态，取决于他们的历史管理的实验地块的土壤。干扰前，草和耕地土壤产生类似的呼吸反应时，处理引入复杂的碳基板。一个不同的呼吸响应休闲土壤在这里表示一个不同的先前的功能状态。初始干湿扰动降低了所有土壤的呼吸作用，表明微生物群落受到扰动，其功能受损。经过12个干燥和再湿润周期，尽管极端的干扰制度，土壤从草地，和那些最近草，适应和恢复到以前的功能状态。耕地土壤的弹性较低，并转向功能状态更类似的休闲土壤。因此，重复的压力显然可以诱导持续的功能状态的变化，在土壤中，这是管理历史的影响。
Soils are fundamental to terrestrial ecosystem functioning and food security, thus their resilience to disturbances is critical. Furthermore, they provide effective models of complex natural systems to explore resilience concepts over experimentally-tractable short timescales. We studied soils derived from experimental plots with different land-use histories of long-term grass, arable and fallow to determine whether regimes of extreme drying and re-wetting would tip the systems into alternative stable states, contingent on their historical management. Prior to disturbance, grass and arable soils produced similar respiration responses when processing an introduced complex carbon substrate. A distinct respiration response from fallow soil here indicated a different prior functional state. Initial dry:wet disturbances reduced the respiration in all soils, suggesting that the microbial community was perturbed such that its function was impaired. After 12 drying and rewetting cycles, despite the extreme disturbance regime, soil from the grass plots, and those that had recently been grass, adapted and returned to their prior functional state. Arable soils were less resilient and shifted towards a functional state more similar to that of the fallow soil. Hence repeated stresses can apparently induce persistent shifts in functional states in soils, which are influenced by management history.
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影响因子：
9.7
作者：
Fraser, F. C.;Todman, L. C.;Corstanje, R.;Deeks, L. K.;Harris, J. A.;Pawlett, M.;Whitmore, A. P.;Ritz, K.
通讯作者：
Ritz, K.
影响因子：
9.7
作者：
Fraser, F. C.;Corstanje, R.;Deeks, L. K.;Harris, J. A.;Pawlett, M.;Todman, L. C.;Whitmore, A. P.;Ritz, K.
通讯作者：
Ritz, K.
影响因子：
4
作者：
Jarvis, Paul;Rey, Ana;Valentini, Riccardo
通讯作者：
Valentini, Riccardo
影响因子：
5.2
作者：
Dai T;Fuchs BB;Coleman JJ;Prates RA;Astrakas C;St Denis TG;Ribeiro MS;Mylonakis E;Hamblin MR;Tegos GP
通讯作者：
Tegos GP
影响因子：
9.7
作者：
Meisner, Annelein;Baath, Erland;Rousk, Johannes
通讯作者：
Rousk, Johannes