Variation and influencing mechanism of soil multifunctionality in grassland ecosystem

doi:10.7522/j.issn.1000-694X.2023.00049

Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (6): 151-165.DOI: 10.7522/j.issn.1000-694X.2023.00049

Variation and influencing mechanism of soil multifunctionality in grassland ecosystem

Zhaobin Song¹^,²(), Ping Yue¹, Xiangyun Li¹^,², Ya Hu¹, Jingjuan Qiao¹^,², Xiaoan Zuo¹()

^1.Urat Desert-grassland Research Station / Gansu Province Key Laboratory of Stress Physiology and Ecology in Cold and Arid Region，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^2.University of Chinese Academy of Sciences，Beijing 100049，China

Received:2022-12-02 Revised:2023-05-10 Online:2023-11-20 Published:2023-11-30
Contact: Xiaoan Zuo

Abstract

Abstract:

Grassland is a crucial part of terrestrial ecosystem and plays an important role in maintaining regional ecological security. Soil multifunctionality （SMF） is a comprehensive index to measure the provided soil multiple functions， which has imperative significance for assessing grassland ecosystem function and regional sustainable development. However， the current SMF studies are still in the initial stage， and the objects in studies are mostly farmland ecosystems， while there are relatively few studies on grassland and other natural ecosystems. In addition， there is few ecolgoists to elucidate the relationship among SMF of grassland ecosystems， plant and soil microorganisms， as well as the effect of global change on SMF in grassland ecosystems. Therefore， this paper discusses the study progress of SMF from five aspects： the concept of SMF， quantitative indicators and methods， the relationship among plants and soil microorganisms and SMF， the impact of global changes on SMF and the spatial variability of SMF， and reviews the change and mechanisms of SMF in grassland ecosystems. Based on the existing problems in the existing studies， the following topics should be focused on：（1） Unified SMF quantitative methods；（2） The transformation mechanism of SMF at different spatial scales；（3） SMF driving mechanism of different grassland ecosystems；（4） Impacts of global changes such as precipitation increase， climate warming and nitrogen deposition， and land use change on SMF；（5） The relationships and interactions between above-ground ecological functions and SMF；（6） Effects of root functional traits on SMF and contributions of plants to SMF at different scale levels；（7） The contribution of rare species of microorganisms and plant-soil animal-soil microbial multitrophic linkage on SMF.

Key words: grassland ecosystem, global change, soil multifunctionality, soil quality

CLC Number:

S154.1

Zhaobin Song, Ping Yue, Xiangyun Li, Ya Hu, Jingjuan Qiao, Xiaoan Zuo. Variation and influencing mechanism of soil multifunctionality in grassland ecosystem[J]. Journal of Desert Research, 2023, 43(6): 151-165.

Figures/Tables 5

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指标内容	指标类型	养分储量	养分状态	养分转化率	生态过程
养分循环	碳循环	有机碳^*、土壤微生物碳…	可溶性有机碳^*…	α葡糖苷酶^、β葡糖苷酶^、β木糖苷酶^、纤维素二糖水解酶^…	土壤呼吸、CO₂通量、凋落物分解速率、代谢熵…
	氮循环	土壤全氮^*、土壤微生物氮…	铵态氮^、硝态氮^…	β-1, 4-N-乙酰氨基葡萄糖苷酶^、亮氨酸氨基肽酶^…	CH₄通量、N₂O通量…
	磷循环	土壤全磷^*、土壤微生物磷…	速效磷^*…	酸/中/碱性磷酸酶^*…
	硫循环	土壤硫含量…		硫酸酯酶…
水分涵养	土壤水稳性团聚体、土壤持水量、土壤含水量、土壤水力传导度…
物理性质	pH、土壤团聚体、孔隙度、阳离子交换量…

指标内容	指标类型	养分储量	养分状态	养分转化率	生态过程
养分循环	碳循环	有机碳^*、土壤微生物碳…	可溶性有机碳^*…	α葡糖苷酶^、β葡糖苷酶^、β木糖苷酶^、纤维素二糖水解酶^…	土壤呼吸、CO₂通量、凋落物分解速率、代谢熵…
	氮循环	土壤全氮^*、土壤微生物氮…	铵态氮^、硝态氮^…	β-1, 4-N-乙酰氨基葡萄糖苷酶^、亮氨酸氨基肽酶^…	CH₄通量、N₂O通量…
	磷循环	土壤全磷^*、土壤微生物磷…	速效磷^*…	酸/中/碱性磷酸酶^*…
	硫循环	土壤硫含量…		硫酸酯酶…
水分涵养	土壤水稳性团聚体、土壤持水量、土壤含水量、土壤水力传导度…
物理性质	pH、土壤团聚体、孔隙度、阳离子交换量…

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Variation and influencing mechanism of soil multifunctionality in grassland ecosystem

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