凋落物处理对不同林型土壤有机碳全氮全磷的影响

doi:10.16843/j.sswc.2020.01.012

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Abstract [Background] By removing and adding litter, the effects of litter treatment on soil active organic carbon and soil nutrients of Pinus koraiensis plantation and broad-leaved K.koraiensis forest were explored, which provided scientific basis and practical reference for sustainable management of the two forest types.[Methods] In May 2018, the questions stated above were studied in Liangshui National Nature Reserve of Xiaoxing'an Mountains by setting up test plots, removing and adding litter, collecting and analyzing soil samples and data processing. The experiment was conducted to remove litter, add double litter and keep the original litter unchanged (control). Each treatment has three replicates. In May, August and October 2018, soil samples in 0-20 cm were collected in each test unit. Bring the soil sample back to the laboratory in time for processing.[Results] In K.koraiensis plantation, litter removal treatment had significant effects on soil easily oxidized organic carbon, particulate organic carbon and light fraction carbon (P<0.05). Adding litter treatment had no significant effects on soil easily oxidized organic carbon, but had significant effects on soil particulate organic carbon and light fraction carbon (P<0.05). Litter treatment had no significant effect on soil easily oxidized organic carbon, but had significant effect on soil particulate organic carbon and light fraction carbon (P<0.05). Adding litter treatment had no significant effect on soil easily oxidized organic carbon, but had significant effect on soil particulate organic carbon and light fraction carbon (P<0.05). The effect of litter removal treatment on soil total organic carbon of two forest types was significant (P<0.05), but the effect of litter addition treatment on soil total organic carbon was not significant; the effect of litter removal and litter addition treatment on soil total nitrogen and total phosphorus was not significant. The effects of litter removal and addition on soil C/N of K. pine plantation were not significant; the effects of litter removal on soil C/N of broad-leaved P.koraiensis plantation were significant (P<0.05), but the effects of litter addition on soil C/N were not significant.[Conclusions] In P. koraiensis plantation, adding litter treatment had no significant effect on soil easily oxidized organic carbon, while removing litter treatment had significant effect (P<0.05) on soil easily oxidized organic carbon; in broad-leaved K. pine plantation, adding and removing litter treatment had no significant effect on soil easily oxidized organic carbon. In the two types of forest, the removal and addition treatments had significant effects (P<0.05) on soil particulate organic carbon and light fraction carbon. In the two forest types, the effect of litter removal on soil total organic carbon was significant(P<0.05), but the effect of litter addition was not significant; the effect of litter removal and litter addition on soil total nitrogen and total phosphorus was not significant.

Key words： Pinus koraiensis forest litter removal and addition soil active organic carbon soil nutrients

Received: 09 September 2019

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S157

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	Articles by authors
	LI Changzhun
	CHEN Lixin
	DUAN Wenbiao
	LI Shaoran
	LI Yifei
	YU Yingying
	ZHU Jiahui
	ZHAO Gerong

Cite this article:

LI Changzhun,CHEN Lixin,DUAN Wenbiao, et al. Effects of litter treatment on soil organic carbon, total nitrogen and total phosphorus in different forest types[J]. SSWC, 2020, 18(1): 100-109.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2020.01.012 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2020/V18/I1/100

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