Selection of tree species by principal component analysis for abandoned farmland in southeastern Horqin Sandy Land, China
Selection of tree species by principal component analysis for abandoned farmland in southeastern Horqin Sandy Land, China
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科尔沁沙地东南部撂荒地树种的主成分选择
DOI：
10.1007/s11676-021-01320-0
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发表时间：
2021-04
影响因子：
3
通讯作者：
Xuefeng Bai
中科院分区：
文献类型：
--
作者：
Peng Meng;Jing Liu;Xuefeng Bai
随着全球气候变化和土地利用方式的改变，科尔沁东南部桑迪沙化耕地面积逐年增加，耕地不断撂荒。这些废弃的农田（AF）对当地生态产生了负面影响。因此，本研究的目的是选择合适的树木和灌木的AF，以防止和控制沙漠化的趋势。本研究对3个人工林进行围栏封育2年后，在围栏封育的人工林中种植21科37种乔灌木或变种，并进行10年的生长试验。采用主成分分析法对各树种的生态适应性进行了评价和排序。结果表明，围栏封育2年后，人工林的生物多样性显著提高，多年生禾本科和杂类草的Shannon-Wiener指数和物种丰富度分别是未封育人工林的1.45和3.6倍，其中9种树种的综合F（CF）值为正值;樟子松（俄罗斯西拉草原种源）、银白杨和三棘皂荚CF值均大于1，第一、第二、第三主成分值（F1、F2、F3）均为正。灌木中只有二色胡枝子和黄刺玫的CF大于0.这些结果表明，围栏提高了生物多样性，在围栏的基础上种植具有较高CF值的乔木和灌木是绿色和美化HSL AF的有效途径。
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 comprehensiveF(CF) values;Pinus sylvestris(Russian Shira steppe provenance),Populus alba‘Berolinensis’ andGleditsia triacanthoshad 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, onlyLespedeza bicolorandRosa xanthinaf.normalishad 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.
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影响因子：
1.7
作者：
Castro, J;Zamora, R;Gómez, JM
通讯作者：
Gómez, JM
内蒙古草原羊草植物功能性状对极端干旱的响应
影响因子：
1.7
作者：
Yue Xiyuan;Zuo Xiaoan;Yu Qiang;Xu Chong;Lv Peng;Zhang Jing;Knapp Alan K.;Smith Melinda D.
通讯作者：
Smith Melinda D.
DOI：
--
发表时间：
2009
期刊：
Journal of Northwest Forestry University
影响因子：
--
作者：
Yang Fang-rong
通讯作者：
Yang Fang-rong
影响因子：
4.8
作者：
P. W. Frank
通讯作者：
P. W. Frank
DOI：
10.1002/eap.2015
发表时间：
2019-11
期刊：
Ecological applications : a publication of the Ecological Society of America
影响因子：
--
作者：
M. Wilber;Sarah M. Chinn;J. Beasley;R. Boughton;R. Brook;S. Ditchkoff;J. Fischer;S. Hartley;L. Holmstrom;J. Kilgo;Jesse S. Lewis;Ryan S. Miller;Nathan P. Snow;K. Vercauteren;S. Wisely;C. Webb;K. Pepin
通讯作者：
M. Wilber;Sarah M. Chinn;J. Beasley;R. Boughton;R. Brook;S. Ditchkoff;J. Fischer;S. Hartley;L. Holmstrom;J. Kilgo;Jesse S. Lewis;Ryan S. Miller;Nathan P. Snow;K. Vercauteren;S. Wisely;C. Webb;K. Pepin