Mixed Broadleaved Tree Species Increases Soil Phosphorus Availability but Decreases the Coniferous Tree Nutrient Concentration in Subtropical China

doi:10.3390/f11040461

	Mixed Broadleaved Tree Species Increases Soil Phosphorus Availability but Decreases the Coniferous Tree Nutrient Concentration in Subtropical China
	Bu, Wen-Sheng 1,2; Gu, Han-Jiao 1,2; Zhang, Can-can 1,2; Zhang, Yang 1; Singh, Anand Narain 3; Fang, Xiang-Min 1,2; Fan, Jing 1,2; Wang, Hui-Min 4; Chen, Fu-Sheng 1,2,5
刊名	FORESTS
	2020-04-01
卷号	11 期号:4 页码:16
关键词	Cunninghamia lanceolata mixture effect nutrient cycling rhizosphere effect species competition
DOI	10.3390/f11040461
通讯作者	Chen, Fu-Sheng(chenfush@yahoo.com)
英文摘要	Phosphorus (P) is a key limiting nutrient in subtropical forests and mixed forests with broadleaved species have been expected to stimulate P cycling, compared to pure conifer plantations. However, the mixture effect of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) and broadleaved species on rhizosphere soil and coniferous tree P dynamics is unclear. In our study, eight plots of a single species of a Chinese fir plantation (pure plantation, PP) and eight mixed plantations (mixed plantation, MP) with broadleaved tree species (Michelia macclurei Dandy in Hunan Province or Schima superba Gardn. et Champ. in Fujian Province) were selected in subtropical China. Six P fractions in the rhizosphere and bulk soils were analyzed by a modified Hedley P fractionation method. Phosphorus fractions and nitrogen (N) concentrations in different root orders, different age fresh needles and twigs, and needle and twig litter of Chinese fir were measured. Our results showed that available P, slowly released P, occluded P, and the total extractable P in rhizosphere soil were significantly higher in MP than PP (p < 0.05). In contrast, P and N concentrations in the transportive roots and two-year old needles were generally higher in PP than MP. Meanwhile, the slowly released P, occluded P, total extractable P, and residual P in rhizosphere soil were negatively correlated with P concentrations in young (absorptive and transportive roots, one- and two-year old needles) but not old tissues (storative roots, three-year old needles and litters). In conclusion, mixture may increase soil P availability through the rhizosphere effect, but can decrease P and N concentration of Chinese fir tissues by competition between Chinese fir and broadleaved species. Clearly, the mixture effect may differ in soil and plant nutrients, and this issue needs be taken into consideration when converting a pure conifer plantation into a mixed-species forest.
资助项目	National Natural Science Foundation of China[31730014] ; National Natural Science Foundation of China[31,870,427] ; National Natural Science Foundation of China[31760134] ; Jiangxi Provincial Department of Science and Technology[20181ACH80006] ; China Scholarship Council[201908360227] ; Jiangxi Province Science Foundation for Youths[20181BAB214014]
WOS关键词	LEAF-LITTER DECOMPOSITION ; CUNNINGHAMIA-LANCEOLATA ; ABOVEGROUND BIOMASS ; PINUS-MASSONIANA ; PLANTATIONS ; PURE ; FIR ; RHIZOSPHERE ; NITROGEN ; ACQUISITION
WOS研究方向	Forestry
语种	英语
出版者	MDPI
WOS记录号	WOS:000534632500099
资助机构	National Natural Science Foundation of China ; Jiangxi Provincial Department of Science and Technology ; China Scholarship Council ; Jiangxi Province Science Foundation for Youths
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159630]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, Fu-Sheng
作者单位	1.Jiangxi Agr Univ, Jiangxi Prov Key Lab Silviculture, Coll Forestry, Nanchang 330045, Jiangxi, Peoples R China 2.Jiangxi Agr Univ, Jiulianshan Natl Observat & Res Stn Chinese Fores, 2011 Collaborat Innovat Ctr Jiangxi Typical Trees, Nanchang 330045, Jiangxi, Peoples R China 3.Panjab Univ, Dept Bot, Chandigarh 160014, India 4.Chinese Acad Sci, Qianyanzhou Ecol Stn, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 5.1101 Zhiminda Rd, Nanchang 330045, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Bu, Wen-Sheng,Gu, Han-Jiao,Zhang, Can-can,et al. Mixed Broadleaved Tree Species Increases Soil Phosphorus Availability but Decreases the Coniferous Tree Nutrient Concentration in Subtropical China[J]. FORESTS,2020,11(4):16.
APA	Bu, Wen-Sheng.,Gu, Han-Jiao.,Zhang, Can-can.,Zhang, Yang.,Singh, Anand Narain.,...&Chen, Fu-Sheng.(2020).Mixed Broadleaved Tree Species Increases Soil Phosphorus Availability but Decreases the Coniferous Tree Nutrient Concentration in Subtropical China.FORESTS,11(4),16.
MLA	Bu, Wen-Sheng,et al."Mixed Broadleaved Tree Species Increases Soil Phosphorus Availability but Decreases the Coniferous Tree Nutrient Concentration in Subtropical China".FORESTS 11.4(2020):16.