Opposite responses of soil phosphorus fractions to two dominant species during early succession in subtropical phosphorus-enriched degraded mounatain ecosystems
Opposite responses of soil phosphorus fractions to two dominant species during early succession in subtropical phosphorus-enriched degraded mounatain ecosystems
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亚热带富磷退化山地生态系统演替早期土壤磷组分对两种优势种的相反响应
DOI：
10.1016/j.catena.2021.105962
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发表时间：
2022
期刊：
影响因子：
6.2
通讯作者：
Duan Changqun
中科院分区：
文献类型：
--
作者：
Zhao Luoqi;Wu Xiaoni;Huang Na;Fu Denggao;Peng Peiyuan;Shang Huaye;Huang Gongning;Duan Changqun
了解植物种类对高土壤磷含量区土壤磷分布特征的影响，对于土地恢复和邻近淡水生态系统的富营养化控制尤为重要。对退化山区多年生草本植物甘蔗(SR)和针叶树云南松(PY)的植物属性、土壤理化性质、林冠内外土壤P组分和吸附特性进行了研究。结果表明，两种树种冠层下土壤碳、氮含量和根系生物量均高于冠外。与冠外相比，SR和PY林冠下土壤有机磷(Po)、活性无机P(Pi)和中间无机P(PI)浓度分别升高和降低，说明SR对土壤P组分有积极作用，而PY对土壤P组分有负面影响。生物有效磷指数表明，在0-20 cm土层中，两种植物冠层下该指数的平均值高达0.2-0.3，表明生物过程在土壤磷循环中的重要性。两种树种冠层下土壤磷吸附指数(PSI)值均较高。影响土壤P组分和PSI的主要因素是土壤氮、铁氧化物和根生物量，这表明不同的植物和取样效应主要通过改变植物根生物量和土壤氮、铁氧化物来影响土壤P组分的分布和磷的流失潜力。
Understanding the effects of plant species on characteristics of the soil phosphorus (P) distributions in high soil P content areas is particularly important for land recovery and eutrophication control of adjoining freshwater ecosystems. We investigated the plant attributes, soil physicochemical properties, and soil P fractions and sorption characteristics outside and under the canopies ofSaccharum rufipilum(SR, a perennial grass) andPinus yunnanensis(PY, a coniferous tree) in a P-enriched degraded mountain area. The results showed that soil carbon and nitrogen concentrations and root biomasses under the canopies of the two species were higher than outside the canopies. Compared to the area outside the canopy, organic P (Po), labile and intermediate inorganic P (Pi) concentrations increase and decrease under the canopy of SR and PY, respectively, which indicated the positive effects of SR and negative effects of PY on these soil P fractions. The biologically available P index showed that the mean values of this index under the canopies of the two species in the 0–20 cm soil layer were as high as 0.2–0.3, which suggests the importance of biological processes in soil P cycling. The soils under the canopies of the two species had higher soil P sorption index (PSI) values. The main factors that influenced the soil P fractions and PSI were soil nitrogen, iron oxides, and root biomass, which indicated that different plant and sampling effects significantly influenced the soil P fraction distributions and P loss potential primarily by changing the plant root biomass and soil nitrogen and Fe oxides.
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影响因子：
3.6
作者：
Rong Qiangqiang;Liu Jingtao;Cai Yanpeng;Lu Zhaohua;Zhao Zhenzhen;Yue Wencong;Xia Jiangbao
通讯作者：
Xia Jiangbao
DOI：
10.1016/j.actao.2009.11.004
发表时间：
2010-03-01
影响因子：
1.8
作者：
Liu, Fude;Yang, Wenjie;Sun, Shucun
通讯作者：
Sun, Shucun
DOI：
10.1016/j.agee.2011.02.011
发表时间：
2011-04
期刊：
Agriculture, Ecosystems & Environment
影响因子：
--
作者：
D. Pizzeghello;A. Berti;S. Nardi;F. Morari
通讯作者：
D. Pizzeghello;A. Berti;S. Nardi;F. Morari
影响因子：
2.7
作者：
A. A. Coble-A.;S. Hart
通讯作者：
A. A. Coble-A.;S. Hart
影响因子：
3.7
作者：
S. Germer;A. Zimmermann;C. Neill;A. Krusche;H. Elsenbeer
通讯作者：
S. Germer;A. Zimmermann;C. Neill;A. Krusche;H. Elsenbeer