栓皮栎伐桩萌苗生物量积累动态及其影响因素的研究

doi:10.19640/j.cnki.jtau.2021.01.002

Journal of Tianjin Agricultural University ›› 2021, Vol. 28 ›› Issue (1): 6-11.doi: 10.19640/j.cnki.jtau.2021.01.002

• Researches and Scientific Notes • Previous Articles Next Articles

Study on biomass accumulation dynamics of stump sprouting of Quercus variabilis and its influence factors

Wu Tong, Guo Huiyun, Zheng Yiteng, Ma Chuang^{Corresponding Author}, Ji Kai, Gao Heyi

College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300392, China

Received:2020-08-13 Online:2021-03-31 Published:2021-04-02

Abstract

Abstract: The biomass of stump sprouting is a key indicator to reflect the regeneration of secondary forest. It is significant to find out the main factors affecting biomass accumulation for forest management and protection. Quercus variabilis forest in the northern mountainous area of Tianjin was selected as the research object. The growth dynamic of stump sprouting was studied in recent 5 years after cutting with fitting the allometric growth equation of biomass accumulation, and the influence of climate on the growth was analyzed. The results showed that the diameter and length of sprouting seedlings five years after cutting were （1.61±0.44）cm and（143.02±9.81）cm, respectively. The total stem dry matter weight was（75.49±10.51）g / plant. The biomass accumulated slowly in the first three years, and then increased speedly. The allometric growth equation showed that diameter and stem dry weight were in accordance with the model as y=ax²+bx+c, while length and stem dry weight were in accordance with y=ax²+c model, both of which were significant. Pearson correlation analysis showed that the growth of stump sprouting seedlings was positively correlated with rainfall, whereas negatively correlated with temperature, indicating that high temperature and less rainfall were the factors limiting the biomass accumulation of Q. variabilis stump sprout in this area. In the future, the management of water and fertilizer should be strengthened, and the technology of artificial sprouting and rejuvenation should be adopted to promote the regeneration of secondary forest.

Key words: Quercus variabilis, stump sprout, allometric growth equation, Pearson correlation analysis

CLC Number:

Q948.113

Wu Tong, Guo Huiyun, Zheng Yiteng, Ma Chuang, Ji Kai, Gao Heyi. Study on biomass accumulation dynamics of stump sprouting of Quercus variabilis and its influence factors[J]. Journal of Tianjin Agricultural University, 2021, 28(1): 6-11.

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Study on biomass accumulation dynamics of stump sprouting of Quercus variabilis and its influence factors

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