Losses of natural and semi-natural forests, mostly to agriculture, are a significant concern for biodiversity. Against this trend, the area of intensively managed plantation forests increases, and there is much debate about the implications for biodiversity. We provide a comprehensive review of the function of plantation forests as habitat compared with other land cover, examine the effects on biodiversity at the landscape scale, and synthesise context-specific effects of plantation forestry on biodiversity. Natural forests are usually more suitable as habitat for a wider range of native forest species than plantation forests but there is abundant evidence that plantation forests can provide valuable habitat, even for some threatened and endangered species, and may contribute to the conservation of biodiversity by various mechanisms. In landscapes where forest is the natural land cover, plantation forests may represent a low-contrast matrix, and afforestation of agricultural land can assist conservation by providing complementary forest habitat, buffering edge effects, and increasing connectivity. In contrast, conversion of natural forests and afforestation of natural non-forest land is detrimental. However, regional deforestation pressure for agricultural development may render plantation forestry a ‘lesser evil’ if forest managers protect indigenous vegetation remnants. We provide numerous context-specific examples and case studies to assist impact assessments of plantation forestry, and we offer a range of management recommendations. This paper also serves as an introduction and background paper to this special issue on the effects of plantation forests on biodiversity.

Plantation Forests and Biodiversity: Oxymoron or Opportunity?

https://link.springer.com/content/pdf/10.1186/s40663-019-0210-2.pdf

Review on carbon storage estimation of forest ecosystem and applications in China

Impact of soil metals on earthworm communities from the perspectives of earthworm ecotypes and metal bioaccumulation.

Seed germination plays an important role in mediating plant species composition of grassland communities under nitrogen (N) enrichment. Shifts of plant community structure with N-enhanced deposition in terrestrial ecosystems have occurred globally. Despite numerous studies about the effects of enhanced N deposition on mature plant communities, few studies have focused on seed germination. Using a laboratory experiment, we report the effects of five N concentrations, including 0, 5, 10, 20, and 40 mM N (NH4NO3) on seed germination of eight semi-arid grassland species. Results showed that low N concentrations (5- and 20-mM N) promoted mean final germination proportion of all eight species by 4.4% and 6.4%, but high concentrations (40 mM N) had no effect. The mean germination rate was decreased 2.1% and 5.1% by higher N concentration (20- and 40-mM N) levels, but germination start time showed the opposite trend, delayed by 0.7, 0.9, and 1.8 d for the 10, 20, and 40 mM N treatments. Final germination proportion, mean germination rate, and germination start time were significantly different among species in response to N concentration treatments. The final germination proportion of Allium tenuissimum and Chenopodium glaucum were suppressed by increased N concentration, whereas it increased for Potentilla bifurca, Plantago asiatica, and Setaria viridis. Our findings provide novel insights into N deposition-induced species loss based on seed germination factors in semi-arid grassland communities.

Direct effects of nitrogen addition on seed germination of eight semi-arid grassland species.

Plant community diversity is conducive to maintain the regional ecosystems stability and ecosystem services. Seed germination is one of the main ways to regulate plant diversity, owing to seedling recruitment as a basis for plant community renewal. However, the exact mechanism of how plant litter affects seedling recruitment, and species richness is not yet fully understood. Therefore, a litter addition and removal experiment was established in a semiarid grassland to study the effects of plant litter on seedling recruitment and species richness from April to August in 2016 and 2017 in Northern China. The positive correlation between species richness and seedling recruitment indicated that a guarantee of seedling recruitment was the main precondition to protect species richness. Adding rather than removing litter significantly reduced species richness. Litter addition inhibited species richness by directly increasing mechanical damage or indirectly reducing photosynthetically active radiation and seedling recruitment. The results of this study are conducive to understand the evolutionary and regulatory mechanisms of community species richness and seedling recruitment in grassland ecosystems after adding or removing plant litter. Open research badges This article has been awarded Open Data, Open Materials and Preregistered research design Badges. All materials and data are publicly accessible via the Open Science Framework at https://doi.org/10.5061/dryad.5dj3jg5 and http://doi.org/10.5061/dryad.13gj03s.

https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece3.5532

Litter addition decreases plant diversity by suppressing seeding in a semiarid grassland, Northern China.

Despite the importance of earthworms to making soils productive, little is known regarding the relative importance of maintenance of the various types of earthworm populations. In this study, we assessed the impact of long-term removal of two potential sources of carbon input, viz. plant litter and roots, on earthworms of Amynthas sp. (epigeic) and Pontoscolex corethrurus (endogeic) that reside at and below the soil surface and primarily rely on litter and/or soil organic matter as a food source, in two different subtropical monoculture plantations. We found that Amynthas sp. disappeared and the density and biomass of Pontoscolex corethrurus was significantly reduced under litter removal treatment, whether roots were removed or not. In contrast, root removal had no significant impact on the density and biomass of both earthworm species. The results suggest that leaf litter, rather than roots, played key roles in maintaining the populations of both the epigeic Amynthas sp. and endogeic Pontoscolex corethrurus earthworms.

Plant leaf litter plays a more important role than roots in maintaining earthworm communities in subtropical plantations

Survivorship of plant species from soil seedbank after translocation from subtropical natural forests to plantation forests

https://link.springer.com/content/pdf/10.1186/s40663-019-0185-z.pdf

Effects of prescribed burning on carbon accumulation in two paired vegetation sites in subtropical China

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Plant leaf litter plays a more important role than roots in maintaining earthworm communities in subtropical plantations

Survivorship of plant species from soil seedbank after translocation from subtropical natural forests to plantation forests

Effects of prescribed burning on carbon accumulation in two paired vegetation sites in subtropical China