Effects of Pruning on Vegetation Growth and Soil Properties in Poplar Plantations

被引:7
作者
Huang, Kaidong [1 ]
Xu, Cheng [1 ]
Qian, Zhuangzhuang [2 ]
Zhang, Kang [1 ]
Tang, Luozhong [1 ]
机构
[1] Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China
[2] Anhui Agr Univ, Sch Forestry & Landscape Architecture, Hefei 230036, Peoples R China
来源
FORESTS | 2023年 / 14卷 / 03期
关键词
pruning; poplar plantation; understory vegetation; soil properties; NITROGEN-FERTILIZER APPLICATION; WATER-USE EFFICIENCY; LOESS PLATEAU; TREE GROWTH; UNDERSTORY VEGETATION; MICROBIAL BIOMASS; MILL; PLANTATIONS; SPECIES RICHNESS; BRANCH OCCLUSION; EUCALYPTUS;
D O I
10.3390/f14030501
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Artificial pruning is an important silvicultural practice that can produce clear wood in poplar plantations. This study focused on the growth of poplar, understory vegetation diversity and soil properties in response to different pruning intensities in poplar plantations. We implemented three different pruning treatments based on the height-to-crown base (HCB) to tree height (H) ratio in Populus deltoides 'Nanlin 3804 ' plantations: CK (no pruning), a 1/3 pruning treatment and a 1/2 pruning treatment. The poplar growth conditions, understory vegetation biodiversity and soil properties were investigated for one year after pruning. Compared with CK, the 1/2 pruning treatment significantly decreased the increment of diameter at breast height (DBHi) and stem volume increment (Vi) by 16.4% and 12.8%, respectively. Meanwhile, pruning significantly promoted understory vegetation biomass and increased the Shannon-Weiner diversity index of understory vegetation, and these variables were positively correlated with pruning intensity. The 1/2 pruning treatment significantly reduced the contents of soil nitrate nitrogen (NO3-N), total inorganic nitrogen (IN) and microbial biomass nitrogen (MBN) by 21.9%, 13.9% and 22.4%, respectively. However, the 1/3 pruning treatment had no significant influence. Pruning mainlyaffectedthe soil enzyme activity in the surface (0-10 cm) layer. The 1/3 and 1/2 pruning treatments significantly decreased soil urease activity by 20.1% and 15.0%, respectively. Furthermore, nonmetric multidimensional scaling analysis showed that the seasonal variation in soil properties was significant, and significant differences among pruning treatments were mainly observed in July and October. Redundancy analysis showed that the growth of aboveground vegetation was significantly correlated with soil properties, particularly soil IN content and urease activity. Therefore, the results highlighted that pruning could promote the growth of understory vegetation and accelerate the transformation of soil nutrients. The 1/2 pruning treatment significantly inhibited the growth of poplar in terms of DBH and V, while the 1/3 pruning treatment promoted the growth of poplar in the short term. Overall, we think that the 1/3 pruning intensity is more suitable for pruning practice.
引用
收藏
页数:16
相关论文
共 64 条
[1]   Photosynthetic response to green crown pruning in young plantation-grown Eucalyptus pilularis and E-cloeziana [J].
Alcorn, Philip J. ;
Bauhus, Juergen ;
Thomas, Dane S. ;
James, Ryde N. ;
Smith, R. Geoff B. ;
Nicotra, Adrienne B. .
FOREST ECOLOGY AND MANAGEMENT, 2008, 255 (11) :3827-3838
[2]   Litter production in Holm oak trees subjected to different pruning intensities in Mediterranean dehesas [J].
Andivia, Enrique ;
Vazquez-Pique, Javier ;
Fernandez, Manuel ;
Alejano, Reyes .
AGROFORESTRY SYSTEMS, 2013, 87 (03) :657-666
[3]   Aboveground biomass partitioning in loblolly pine silvopastoral stands: Spatial configuration and pruning effects [J].
Ares, A ;
Brauer, D .
FOREST ECOLOGY AND MANAGEMENT, 2005, 219 (2-3) :176-184
[4]   Trends in tree growth and understory yield in silvopastoral practices with southern pines [J].
Ares, A ;
St Louis, D ;
Brauer, D .
AGROFORESTRY SYSTEMS, 2003, 59 (01) :27-33
[5]   A tale of two genera: Exotic Eucalyptus and Acacia species in China. 2. Plantation resource development [J].
Arnold, R. J. ;
Xie, Y. J. ;
Luo, J. Z. ;
Wang, H. R. ;
Midgley, S. J. .
INTERNATIONAL FORESTRY REVIEW, 2020, 22 (02) :153-168
[6]   Effect of pruning Acacia mangium on growth, form and heart rot [J].
Beadle, Chris ;
Barry, Karen ;
Hardiyanto, Eko ;
Irianto, Ragil ;
Junarto ;
Mohammed, Caroline ;
Rimbawanto, Anto .
FOREST ECOLOGY AND MANAGEMENT, 2007, 238 (1-3) :261-267
[7]   Curtailing succession: Removing conifers enhances understory light and growth of young aspen in mixed stands around Lake Tahoe, California and Nevada, USA [J].
Berrill, John-Pascal ;
Dagley, Christa M. ;
Coppeto, Stephanie A. ;
Gross, Shana E. .
FOREST ECOLOGY AND MANAGEMENT, 2017, 400 :511-522
[8]   Why one tree grows faster than another: Patterns of light use and light use efficiency at the scale of individual trees and stands [J].
Binkley, Dan ;
Laclau, Jean-Paul ;
Sterba, Hubert .
FOREST ECOLOGY AND MANAGEMENT, 2013, 288 :1-4
[9]   Diversity and succession of adventive and indigenous vascular understorey plants in Pinus radiata plantation forests in New Zealand [J].
Brockerhoff, EG ;
Ecroyd, CE ;
Leckie, AC ;
Kimberley, MO .
FOREST ECOLOGY AND MANAGEMENT, 2003, 185 (03) :307-326
[10]   CHLOROFORM FUMIGATION AND THE RELEASE OF SOIL-NITROGEN - A RAPID DIRECT EXTRACTION METHOD TO MEASURE MICROBIAL BIOMASS NITROGEN IN SOIL [J].
BROOKES, PC ;
LANDMAN, A ;
PRUDEN, G ;
JENKINSON, DS .
SOIL BIOLOGY & BIOCHEMISTRY, 1985, 17 (06) :837-842