Seasonal Changes and Vertical Distribution of Fine Root Biomass During Vegetation Restoration in a Karst Area, Southwest China

被引:46
作者
Du, Hu [1 ,2 ]
Liu, Lu [3 ]
Su, Liang [1 ,2 ]
Zeng, Fuping [1 ,2 ]
Wang, Kelin [1 ,2 ]
Peng, Wanxia [1 ,2 ]
Zhang, Hao [1 ,2 ]
Song, Tongqing [1 ,2 ]
机构
[1] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha, Hunan, Peoples R China
[2] Chinese Acad Sci, Inst Subtrop Agr, Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang, Peoples R China
[3] Hunan Agr Biotechnol Res Inst, Changsha, Hunan, Peoples R China
来源
FRONTIERS IN PLANT SCIENCE | 2019年 / 9卷
基金
中国国家自然科学基金;
关键词
seasonal pattern; production; stages of succession; ecological restoration; karst ecosystem; PLANT COMMUNITY CHARACTERISTICS; NORWAY SPRUCE; UNDERSTOREY VEGETATION; CARBON SEQUESTRATION; FORAGING STRATEGIES; SPECIES-DIVERSITY; TURNOVER RATES; SCOTS PINE; SOIL; DYNAMICS;
D O I
10.3389/fpls.2018.02001
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In karst ecosystems, plants absorbing smaller amounts of nutrients, owing to shallow soil, show limited growth. In addition, fine roots (diameter < 2 mm) contribute to the regulation of nutrient cycles in terrestrial ecosystems. However, the spatial and temporal variations of fine root biomass in different vegetation types of the karst region remains poorly understood. In this study, we investigated the seasonal and vertical variation in biomass, necromass, and total mass of fine roots using sequential soil coring under different stages of vegetation restoration (grassland, shrubland, secondary forest, and primary forest) in Southwest China. The results showed that the fine root biomass and necromass ranged from 136.99 to 216.18 g m(-2) and 47.34 to 86.94 g m(-2), respectively. The total mass of fine roots and their production ranged from 187.00 to 303.11 g m(-2) and 55.74 to 100.84 g m(-2) year(-1), respectively. They showed a single peak across the vegetation restoration gradient. The fine root biomass and total fine root mass also showed a single peak with seasonal change. In autumn, the fine root biomass was high, whereas the necromass was low. Most of the fine roots were concentrated in the surface soil layer (0-10 cm), which accounted more than 57% root biomass, and decreased with increasing soil depth. In addition, fine root production showed a similar vertical pattern of variation with biomass. Overall, our results suggested that fine roots show clear seasonal and vertical changes with vegetation succession. Moreover, there was a higher seasonal fluctuation and a greater vertical decreasing trend in late-successional stages than in the early-successional stages. The conversion of degraded land to forest could improve the productivity of underground ecosystems and vegetation restoration projects in the fragile karst region should, therefore, continue.
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页数:9
相关论文
共 47 条
[11]   Understanding tree growth responses after partial cuttings: A new approach [J].
Girona, Miguel Montoro ;
Rossi, Sergio ;
Lussier, Jean-Martin ;
Walsh, Denis ;
Morin, Hubert .
PLOS ONE, 2017, 12 (02)
[12]   The change of soil carbon stocks and fine root dynamics after land use change from a native pasture to a pine plantation [J].
Guo, Lanbin B. ;
Wang, Mengben ;
Gifford, Roger M. .
PLANT AND SOIL, 2007, 299 (1-2) :251-262
[13]   Fine root production and turnover of tree and understorey vegetation in Scots pine, silver birch and Norway spruce stands in SW Sweden [J].
Hansson, Karna ;
Helmisaari, Helja-Sisko ;
Sah, Shambhu P. ;
Lange, Holger .
FOREST ECOLOGY AND MANAGEMENT, 2013, 309 :58-65
[14]  
Hu F, 2017, CONTEMP PROBL ECOL+, V10, P707, DOI [10.1134/s1995425517060051, 10.1134/S1995425517060051]
[15]   Fine root dynamics in a Japanese cedar (Cryptomeria japonica) plantation throughout the growing season [J].
Konôpka, B ;
Noguchi, K ;
Sakata, T ;
Takahashi, M ;
Konôpková, Z .
FOREST ECOLOGY AND MANAGEMENT, 2006, 225 (1-3) :278-286
[16]   Responses of soil nutrients and microbial communities to three restoration strategies in a karst area, southwest China [J].
Li, Dejun ;
Wen, Li ;
Jiang, Shan ;
Song, Tongqing ;
Wang, Kelin .
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2018, 207 :456-464
[17]   Changes in species diversity, aboveground biomass, and vegetation cover along an afforestation successional gradient in a semiarid desert steppe of China [J].
Liu, Bing ;
Zhao, Wenzhi ;
Liu, Zhiling ;
Yang, Yuting ;
Luo, Weicheng ;
Zhou, Hai ;
Zhang, Yongyong .
ECOLOGICAL ENGINEERING, 2015, 81 :301-311
[18]   Aboveground carbon stock, allocation and sequestration potential during vegetation recovery in the karst region of southwestern China: A case study at a watershed scale [J].
Liu, Changcheng ;
Liu, Yuguo ;
Guo, Ke ;
Wang, Shijie ;
Liu, Huiming ;
Zhao, Haiwei ;
Qiao, Xianguo ;
Hou, Dongjie ;
Li, Shaobin .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2016, 235 :91-100
[19]   Standing fine root mass and production in four Chinese subtropical forests along a succession and species diversity gradient [J].
Liu, Cong ;
Xiang, Wenhua ;
Lei, Pifeng ;
Deng, Xiangwen ;
Tian, Dalun ;
Fang, Xi ;
Peng, Changhui .
PLANT AND SOIL, 2014, 376 (1-2) :445-459
[20]   High Mortality and Low Net Change in Live Woody Biomass of Karst Evergreen and Deciduous Broad-Leaved Mixed Forest in Southwestern China [J].
Liu, Libin ;
Ni, Jian ;
Zhong, Qiaolian ;
Hu, Gang ;
Zhang, Zhonghua .
FORESTS, 2018, 9 (05)