With changes in global climate and land use, the area of desertified farmland in southeastern Horqin Sandy Land (HSL) has increased in recent years, and farmlands are being abandoned. These abandoned farmlands (AFs) negatively impact the local ecology. Therefore, the aim of the present study was to select suitable trees and shrubs for those AFs to prevent and control the desertification tendency. In this study, three AFs were fenced for 2 years, then 37 arbor and shrub species or varieties of 21 families were planted in the fenced AFs and grown for 10 years. The ecological adaptability of the species was evaluated and ranked using a principal component analysis. The results showed that the biodiversity of the AFs significantly improved after 2 years of fencing; the Shannon–Wiener index and species richness of perennial grasses and forbs were 1.45 and 3.6 times higher, respectively, than for the unfenced AF. Among all species planted in fenced AFs, nine tree species had positive comprehensive F (CF) values; Pinus sylvestris (Russian Shira steppe provenance), Populus alba ‘Berolinensis’ and Gleditsia triacanthos had CF greater than 1, and the first (PC1), second (PC2) and third (PC3) principal component values (F₁, F₂, F₃) were all positive. Among the shrubs, only Lespedeza bicolor and Rosa xanthina f. normalis had CF greater than 0. All these results suggest that fencing improves biodiversity and that planting trees and shrubs that have higher CF values on the basis of fencing is an effective way to green and beautify AFs in HSL.

随着全球气候和土地利用的变化，近年来科尔沁沙地东南部的荒漠化耕地面积增加了，农田被抛弃了。这些废弃的农田对当地的生态产生了负面影响。因此，本研究的目的是为那些AF选择合适的树木和灌木，以预防和控制荒漠化趋势。在这项研究中，将3种AF围栏2年，然后在围栏AF中种植37种乔木和灌木物种或21个科的变种，并生长10年。对该物种的生态适应性进行了评估，并使用主成分分析对其进行了排名。结果表明，击剑2年后，AF的生物多样性得到了显着改善。多年生草和草的香农-维纳指数和物种丰富度为1。分别是无防御自动对焦的45倍和3.6倍。在围栏AF中种植的所有树种中，有9个树种的阳性综合F（CF）值；樟子松（俄罗斯希拉草原出处），银白杨“Berolinensis”和皂角triacanthos有CF大于1，并且所述第一（PC1），第二（PC2）和第三（PC3）主成分的值（˚F ₁，˚F ₂，˚F ₃）都是积极的。在灌木中，只有双色的Lespedeza和Rosa xanthina f。Normalis的CF值大于0。所有这些结果表明，围栏可以改善生物多样性，在围栏的基础上种植具有更高CF值的树木和灌木是绿化和美化HSL AFs的有效方法。