栽培方式对耕地自生植物区系和开花多样性的影响,Ecology and Evolution

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栽培方式对耕地自生植物区系和开花多样性的影响
Ecology and Evolution ( IF 2.3 ) Pub Date : 2021-10-13 , DOI: 10.1002/ece3.8223
Jörg Hoffmann ₁ , Tim Wahrenberg ₁

Affiliation

过去，耕地的植物区系多样性是根据物种多样性（SD）及其覆盖程度（C）来描述的，但从未结合实际开花物种（FS）及其开花强度的记录（ FI）耕地耕作方法的显着差异。然而，对于 SD 和 C，FS 和 FI 可能提供有关田地功能生物多样性的重要附加信息。因此，目的是调查 (a) 常规、(b) 有机和 (c) 小农（从不使用除草剂）对植物多样性的影响。我们使用德国的一个地区，通过 2019 年春季和夏季进行的 356 次植被调查（5 × 5 m 地块），在（a）、（b）和（c）中同步调查了 SD、C、FS 和 FI。冬季谷物。统计检验用于分析（a）、（b）和（c）之间的差异。中位数用于比较（a）、（b）和（c）的植物多样性，最后分析 FS 和 FI 与 SD 与栽培方法的关系。春季和夏季的 (a)、(b) 和 (c) 之间的 SD、C、FS 和 FI 存在显着差异，其特征是从 (c) 到 (b) 到 (a) 急剧下降。确定植物多样性从 (c) 100 到 (b) 52 到 (a) 3 急剧减少。花中的植物（FS，FI）在（a）中非常差，在（b）中中等好到好，在（c）中很好到很好代表。(C) 到 (a) 的特点是急剧下降，从 (a) 到 (b) 的特点是植物多样性急剧增加。考虑到当前 (a) 的面积比例，这将影响德国大约三分之一的土地面积，

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Effects of cultivation practice on floristic and flowering diversity of spontaneously growing plant species on arable fields

In the past, the floristic diversity of arable fields has been described in terms of species diversity (SD) and their degree of coverage (C), but never in combination with the recording of the actually flowered species (FS) and their flowering intensity (FI) to striking differences in the cultivation methods on arable land. In relation to SD and C, however, FS and FI may provide important additional information on the functional biodiversity of fields. The aim was therefore to investigate the effects of (a) conventional, (b) organic, and (c) smallholder (never application of herbicides) on the floristic diversity. Using a region in Germany, we investigated SD, C, FS, and FI synchronously in (a), (b), and (c), by 356 vegetation surveys (5 × 5 m plots) conducted in spring and summer in 2019 in winter cereals. Statistical tests were used to analyze the differences between (a), (b), and (c). The medians were used to compare the floristic diversity of (a), (b), and (c) and finally relationships of FS and FI to SD were analyzed in relation to the cultivation methods. Significant differences in SD, C, FS, and FI were found between the (a), (b), and (c) in spring and summer characterized by sharp declines from (c) to (b) to (a). A drastic reduction in floristic diversity from (c) 100 to (b) 52 to (a) 3 was determined. Plants in flower (FS, FI) were very poorly in (a), moderately well to well in (b), and well to very well represented in (c). (C) to (a) was characterized by a sharp decline and from (a) to (b) by sharp increase in floristic diversity. With current acreage proportions of (a) in mind, this would affect, about one third of land area in Germany, associated with a drastic reduction in functional biodiversity for insects.

更新日期：2021-11-07

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