Effects of nitrogen and water addition on trace element stoichiometry in five grassland species

Jiangping Cai; Jacob Weiner; Ruzhen Wang; Wentao Luo; Yongyong Zhang; Heyong Liu; Zhuwen Xu; Hui Li; Yuge Zhang; Yong-hui Jiang

doi:10.1007/s10265-017-0928-2

Effects of nitrogen and water addition on trace element stoichiometry in five grassland species

Jiangping Cai, Jacob Weiner, Ruzhen Wang, Wentao Luo, Yongyong Zhang, Heyong Liu, Zhuwen Xu, Hui Li, Yuge Zhang, Yong-hui Jiang

SOBI

12 Citationer (Scopus)

Abstract

A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses. In addition, bioaccumulation factors (BAF, the ratio of the chemical concentration in the organism and the chemical concentration in the growth substrate) and foliar Fe:Mn ratio in each plant was calculated. Our results showed that soil available Fe, Mn and Cu concentrations increased under N addition and were negatively correlated with both soil pH and cation exchange capacity. Water addition partly counteracted the positive effects of N addition on available trace element concentrations in the soil. Foliar Mn, Cu and Zn concentrations increased but Fe concentration decreased with N addition, resulting in foliar elemental imbalances among Fe and other selected trace elements. Water addition alleviated the effect of N addition. Forbs are more likely to suffer from Mn toxicity and Fe deficiency than grass species, indicating more sensitivity to changing elemental bioavailability in soil. Our results suggested that soil acidification due to N deposition may accelerate trace element cycling and lead to elemental imbalance in soil–plant systems of semi-arid grasslands and these impacts of N deposition on semi-arid grasslands were affected by water addition. These findings indicate an important role for soil trace elements in maintaining ecosystem functions associated with atmospheric N deposition and changing precipitation regimes in the future.

Originalsprog	Engelsk
Tidsskrift	Journal of Plant Research
Vol/bind	130
Udgave nummer	4
Sider (fra-til)	659-668
Antal sider	10
ISSN	0918-9440
DOI	https://doi.org/10.1007/s10265-017-0928-2
Status	Udgivet - 2017

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10.1007/s10265-017-0928-2

Citationsformater

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title = "Effects of nitrogen and water addition on trace element stoichiometry in five grassland species",

abstract = "A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses. In addition, bioaccumulation factors (BAF, the ratio of the chemical concentration in the organism and the chemical concentration in the growth substrate) and foliar Fe:Mn ratio in each plant was calculated. Our results showed that soil available Fe, Mn and Cu concentrations increased under N addition and were negatively correlated with both soil pH and cation exchange capacity. Water addition partly counteracted the positive effects of N addition on available trace element concentrations in the soil. Foliar Mn, Cu and Zn concentrations increased but Fe concentration decreased with N addition, resulting in foliar elemental imbalances among Fe and other selected trace elements. Water addition alleviated the effect of N addition. Forbs are more likely to suffer from Mn toxicity and Fe deficiency than grass species, indicating more sensitivity to changing elemental bioavailability in soil. Our results suggested that soil acidification due to N deposition may accelerate trace element cycling and lead to elemental imbalance in soil–plant systems of semi-arid grasslands and these impacts of N deposition on semi-arid grasslands were affected by water addition. These findings indicate an important role for soil trace elements in maintaining ecosystem functions associated with atmospheric N deposition and changing precipitation regimes in the future.",

keywords = "Elemental uptake, Fe deficiency, Mn toxicity, Nitrogen deposition, Nutrient bioavailability, Precipitation regimes",

author = "Jiangping Cai and Jacob Weiner and Ruzhen Wang and Wentao Luo and Yongyong Zhang and Heyong Liu and Zhuwen Xu and Hui Li and Yuge Zhang and Yong-hui Jiang",

year = "2017",

doi = "10.1007/s10265-017-0928-2",

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volume = "130",

pages = "659--668",

journal = "Journal of Plant Research",

issn = "0918-9440",

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TY - JOUR

T1 - Effects of nitrogen and water addition on trace element stoichiometry in five grassland species

AU - Cai, Jiangping

AU - Weiner, Jacob

AU - Wang, Ruzhen

AU - Luo, Wentao

AU - Zhang, Yongyong

AU - Liu, Heyong

AU - Xu, Zhuwen

AU - Li, Hui

AU - Zhang, Yuge

AU - Jiang, Yong-hui

PY - 2017

Y1 - 2017

N2 - A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses. In addition, bioaccumulation factors (BAF, the ratio of the chemical concentration in the organism and the chemical concentration in the growth substrate) and foliar Fe:Mn ratio in each plant was calculated. Our results showed that soil available Fe, Mn and Cu concentrations increased under N addition and were negatively correlated with both soil pH and cation exchange capacity. Water addition partly counteracted the positive effects of N addition on available trace element concentrations in the soil. Foliar Mn, Cu and Zn concentrations increased but Fe concentration decreased with N addition, resulting in foliar elemental imbalances among Fe and other selected trace elements. Water addition alleviated the effect of N addition. Forbs are more likely to suffer from Mn toxicity and Fe deficiency than grass species, indicating more sensitivity to changing elemental bioavailability in soil. Our results suggested that soil acidification due to N deposition may accelerate trace element cycling and lead to elemental imbalance in soil–plant systems of semi-arid grasslands and these impacts of N deposition on semi-arid grasslands were affected by water addition. These findings indicate an important role for soil trace elements in maintaining ecosystem functions associated with atmospheric N deposition and changing precipitation regimes in the future.

AB - A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses. In addition, bioaccumulation factors (BAF, the ratio of the chemical concentration in the organism and the chemical concentration in the growth substrate) and foliar Fe:Mn ratio in each plant was calculated. Our results showed that soil available Fe, Mn and Cu concentrations increased under N addition and were negatively correlated with both soil pH and cation exchange capacity. Water addition partly counteracted the positive effects of N addition on available trace element concentrations in the soil. Foliar Mn, Cu and Zn concentrations increased but Fe concentration decreased with N addition, resulting in foliar elemental imbalances among Fe and other selected trace elements. Water addition alleviated the effect of N addition. Forbs are more likely to suffer from Mn toxicity and Fe deficiency than grass species, indicating more sensitivity to changing elemental bioavailability in soil. Our results suggested that soil acidification due to N deposition may accelerate trace element cycling and lead to elemental imbalance in soil–plant systems of semi-arid grasslands and these impacts of N deposition on semi-arid grasslands were affected by water addition. These findings indicate an important role for soil trace elements in maintaining ecosystem functions associated with atmospheric N deposition and changing precipitation regimes in the future.

KW - Elemental uptake

KW - Fe deficiency

KW - Mn toxicity

KW - Nitrogen deposition

KW - Nutrient bioavailability

KW - Precipitation regimes

U2 - 10.1007/s10265-017-0928-2

DO - 10.1007/s10265-017-0928-2

M3 - Journal article

C2 - 28299516

AN - SCOPUS:85015247305

SN - 0918-9440

VL - 130

SP - 659

EP - 668

JO - Journal of Plant Research

JF - Journal of Plant Research

IS - 4

ER -

Effects of nitrogen and water addition on trace element stoichiometry in five grassland species

Abstract

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