دورية أكاديمية
The benefits of fertiliser application on tree growth are transient in restored jarrah forest
| العنوان: | The benefits of fertiliser application on tree growth are transient in restored jarrah forest |
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| المؤلفون: | Sheree J. Walters, Richard J. Harris, Matthew I. Daws, Matthew J. Gillett, Cameron G. Richardson, Mark Tibbett, Andrew H. Grigg |
| المصدر: | Trees, Forests and People, Vol 5, Iss , Pp 100112- (2021) |
| بيانات النشر: | Elsevier, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Forestry LCC:Plant ecology |
| مصطلحات موضوعية: | Eucalyptus, Fertiliser, Forest restoration, Nitrogen, Phosphorus, Rehabilitation, Forestry, SD1-669.5, Plant ecology, QK900-989 |
| الوصف: | The application of fertiliser, to both replace nutrients lost during mining and facilitate rapid vegetation re-establishment, is viewed as a key step in the restoration of post-mining landscapes. However, few studies have examined the long-term effects of a single initial fertiliser application on tree growth in restored sites. We report on a large-scale, fully replicated study that investigated the effect of an initial N and P fertiliser application (0, 80 and 120 kg ha−1 elemental N and P) on sites restored after bauxite mining. Growth of the two main jarrah forest tree species (jarrah - Eucalyptus marginata and marri - Corymbia calophylla) was monitored 9 and 20 years after the completion of restoration. After 20 years, soil NO3− and NH4+ were unaffected by N-application, although soil Colwell-P concentrations remained elevated following P-application. N-application had no effect on marri growth at either time interval, but increased jarrah diameter at breast height over bark (DBHOB), height and stand basal area at 9 years and DBHOB at 20 years. Applied-P increased height and DBHOB of jarrah after 9 years, but these effects did not continue. In contrast, applied-P benefitted marri growth (DBHOB and stand basal area) at both 9 and 20 years. Tree growth rates in the fertilised treatments declined more between the two-time intervals (0 – 9 years and 9 – 20 years) than the unfertilised plots, particularly for jarrah, suggesting that resource limits were reached more rapidly in the fertilised treatments. Further, for both N and P there was no additional benefit from application rates above 80 kg ha−1. These results demonstrate that while fertiliser addition may benefit initial growth in restored jarrah forest, the effects reduce with restoration age and may have limited practical benefit after 20 years. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2666-7193 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2666719321000510; https://doaj.org/toc/2666-7193 |
| DOI: | 10.1016/j.tfp.2021.100112 |
| URL الوصول: | https://doaj.org/article/f5aa0a68e9a4469fba8c01aa75498b71 |
| رقم الأكسشن: | edsdoj.f5aa0a68e9a4469fba8c01aa75498b71 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26667193 |
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| DOI: | 10.1016/j.tfp.2021.100112 |