From marginal croplands to natural habitats: A methodological framework for assessing the restoration potential to enhance wild-bee pollination in agricultural landscapes.

IF 4 2区环境科学与生态学 Q1 ECOLOGY Landscape Ecology Pub Date : 2024-01-01 Epub Date: 2024-11-12 DOI:10.1007/s10980-024-01993-y

Gabriela María Torchio, Jérôme Cimon-Morin, Poliana Mendes, Jean-Olivier Goyette, Amanda M Schwantes, Miguel Arias-Patino, Elena M Bennett, Catherine Destrempes, Stéphanie Pellerin, Monique Poulin

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Abstract

Context: Intensive agriculture increases crop yields, but harms biodiversity and associated ecosystem services such as pollination. To sustain wild-bee pollination in intensive agricultural landscapes, a minimum of (semi-) natural habitat is needed in the vicinity of crop fields. However, restoration of (semi-) natural habitat is a challenge, especially when most land is allocated to commodity production.

Objectives: To evaluate the restoration potential of marginal lands to enhance pollination in intensive agricultural landscapes.

Methods: We simulated restoration scenarios in marginal agricultural lands (abandoned and degraded fields, and field edges) in La Vallée-du-Richelieu (Quebec, Canada), aimed at enhancing pollination provision and increasing (semi-) natural habitat coverage by at least 20% within 1 km from crop fields, the estimated minimum amount required to sustain wild-bee populations. We then evaluated the extent to which restoration targets were reached in our scenarios.

Results: More than half of the agricultural region studied remained with less than 20% (semi-) natural area coverage, and wild-bee pollination provision could not be ensured across the whole agricultural region after restoration. However, our results show that there is still an important potential for increasing natural habitat coverage by restoring marginal agricultural lands alone.

Conclusion: Restoration of marginal lands has a key role to play in the transition towards multifunctionality of production landscapes but might not be sufficient to achieve goals such as those adopted at the COP15 (e.g., restoring 30% of degraded land). Our framework can assist landscape planners in evaluating the restoration potential of agricultural landscapes, as well as its limitations.

Supplementary information: The online version contains supplementary material available at 10.1007/s10980-024-01993-y.

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从贫瘠耕地到自然栖息地：评估农业景观中野生蜜蜂授粉恢复潜力的方法框架。

背景：集约化农业提高了作物产量，但却损害了生物多样性和相关的生态系统服务，如授粉。为了在集约化农业景观中维持野生蜜蜂授粉，需要在作物田附近建立最低限度的（半）自然栖息地。然而，恢复（半）自然栖息地是一项挑战，尤其是当大部分土地被分配用于商品生产时：评估边缘土地的恢复潜力，以提高集约农业景观的授粉效果：我们模拟了加拿大魁北克省里谢利厄河谷地区边缘农田（废弃和退化的田地以及田地边缘）的恢复方案，目的是提高授粉能力，并将距离农田 1 公里范围内的（半）自然栖息地覆盖率提高至少 20%，这是维持野生蜜蜂种群数量所需的最低估计覆盖率。然后，我们对方案中达到恢复目标的程度进行了评估：结果：在所研究的农业区中，有一半以上的自然区域覆盖率仍然低于 20%（半），在整个农业区中，野生蜜蜂的授粉供应无法在恢复后得到保证。然而，我们的研究结果表明，仅靠恢复边缘农田来提高自然栖息地覆盖率仍有很大潜力：边缘土地的恢复在生产景观向多功能性过渡的过程中起着关键作用，但可能不足以实现 COP15 等会议通过的目标（如恢复 30% 的退化土地）。我们的框架可以帮助景观规划者评估农业景观的恢复潜力及其局限性：在线版本包含补充材料，可查阅 10.1007/s10980-024-01993-y。

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来源期刊

Landscape Ecology 环境科学-地球科学综合

CiteScore

8.30

自引率

7.70%

发文量

164

审稿时长

8-16 weeks

期刊介绍： Landscape Ecology is the flagship journal of a well-established and rapidly developing interdisciplinary science that focuses explicitly on the ecological understanding of spatial heterogeneity. Landscape Ecology draws together expertise from both biophysical and socioeconomic sciences to explore basic and applied research questions concerning the ecology, conservation, management, design/planning, and sustainability of landscapes as coupled human-environment systems. Landscape ecology studies are characterized by spatially explicit methods in which spatial attributes and arrangements of landscape elements are directly analyzed and related to ecological processes.