干旱区生态环境知识资源中心(Arid): 沙枣改善盐碱土壤养分的研究进展

Arid

	沙枣改善盐碱土壤养分的研究进展
其他题名	A review on the improvement of salt-affected soil nutrients by Elaeagnus angustifolia L
	武海雯; 杨秀艳; 王计平; 刘正祥; 朱建峰; 张华新
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2019
卷号	38 期号:11 页码:3527-3534
中文摘要	种植多用途耐盐碱树种是盐碱地生态修复的有效手段之一,具有显著的生态效益和经济效益。沙枣(Elaeagnus angustifolia L.)是其中的代表性植物,是我国干旱半干旱地区盐碱地改良的先锋树种。沙枣能显著提高盐碱土养分,但其养分输送机制尚不清晰。本文在分析沙枣地理分布及气候适应性的基础上,从沙枣林土壤养分变化、生物固氮、凋落物和细根分解等方面综述了沙枣改善盐碱土壤养分的程度及途径,从数量角度阐述沙枣的养分输送关键过程及土壤盐碱程度的影响,进一步认识沙枣对盐碱地的改良作用。沙枣在我国绝大部分盐碱地区均有分布,具有极强的地理和气候适应性;沙枣耐盐碱性强,能显著提高中、重度盐碱土壤的养分含量,尤其是氮素含量,有显著的培肥作用;沙枣的培肥作用主要是通过高效的生物固氮以及凋落物和细根的快速分解实现,能在短期内向土壤释放大量氮素,从而快速提高土壤肥力;沙枣的生物固氮和养分释放过程受土壤盐度的影响。未来,沙枣-盐碱土系统中养分输送机制的研究应重点加强以氮素循环为核心的长期定位监测及针对不同盐碱类型、不同沙枣种源的定性和定量相结合的研究。对沙枣改良盐碱地养分的机制、途径、作用的精细研究有助于从养分管理角度建立以沙枣为代表的树种改良盐碱地土壤的机制模型,为盐碱地精准生态修复和植被构建提供科学依据。
英文摘要	Planting multi-purpose and salt-tolerant tree species is one of the most effective ways for ecological restoration of salt-affected soil,with great ecological and economic benefits. Elaeagnus angustifolia L. is a representative tree species as a pioneer species for ecological restoration of salt-affected soil in China. E. angustifolia can significantly improve nutrient concentrations in salt-affected soil, with the mechanism underlying nutrient transport being still unclear. Based on the analysis of geographical distribution and climatic adaptability,we summarized the degree and ways of improving nutrient status in salt-affected soil by E. angustifolia from the aspects of soil nutrient increase,biological N-fixation,leaf litter and fine root decomposition. We quantitatively elaborated the key processes of nutrient transport and the effect of soil salinity,giving a straightforward understanding of the positive effects of E. angustifolia on salt-affected soil. E. angustifolia was distributed in most salt-affected areas of China,with great geographical and climatic adaptability. E. angustifolia had high salt tolerance, and could significantly increase nutrient content, especially N content, in moderate and severe saline-alkali soils. The prominent fertilization effect of E. angustifolia attributed to its efficient biological N-fixation and rapid litter and fine root decomposition,which release a large amount of N into soil in a short time,thus rapidly improving soil fertility. The processes of biological N-fixation and nutrient release were affected by soil salinity. Further studies of nutrient transport mechanism of E. angustifolia in salt-affected soil should focus on the long-term positioning monitoring with nitrogen cycle as the kernel,and the combination of qualitative and quantitative research for salt types and E. angustifolia provenances. Precise understanding of the mechanism,pathway and function of E. angustifolia on improving salt-affected soil nutrients is helpful to establish the mechanism model of soil improvement by tree species represented by E. angustifolia from the perspective of nutrient management,which provides scientific support for precise ecological restoration and vegetation construction for salt-affected soils.
中文关键词	生物固氮 ; 凋落物 ; 细根 ; 分解 ; 养分释放 ; 土壤培肥 ; 生态修复
英文关键词	biological N-fixation litter fine root decomposition nutrient release soil fertility improvement ecological restoration
类型	Review
语种	中文
收录类别	CSCD
WOS类目	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6611900
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378981
作者单位	武海雯, 国家林业和草原局盐碱地研究中心;;中国林业科学研究院天津林业科学研究所, 国家林业和草原局盐碱地研究中心;;, ;;, 北京;;天津 100091;;300270, 中国.; 杨秀艳, 国家林业和草原局盐碱地研究中心;;中国林业科学研究院天津林业科学研究所, 国家林业和草原局盐碱地研究中心;;, ;;, 北京;;天津 100091;;300270, 中国.; 王计平, 国家林业和草原局盐碱地研究中心;;中国林业科学研究院天津林业科学研究所, 国家林业和草原局盐碱地研究中心;;, ;;, 北京;;天津 100091;;300270, 中国.; 刘正祥, 国家林业和草原局盐碱地研究中心;;中国林业科学研究院天津林业科学研究所, 国家林业和草原局盐碱地研究中心;;, ;;, 北京;;天津 100091;;300270, 中国.; 朱建峰, 国家林业和草原局盐碱地研究中心;;中国林业科学研究院天津林业科学研究所, 国家林业和草原局盐碱地研究中心;;, ;;, 北京;;天津 100091;;300270, 中国.; 张华新, 国家林业和草原局盐碱地研究中心;;中国林业科学研究院天津林业科学研究所, 国家林业和草原局盐碱地研究中心;;, ;;, 北京;;天津 100091;;300270, 中国.
推荐引用方式 GB/T 7714	武海雯,杨秀艳,王计平,等. 沙枣改善盐碱土壤养分的研究进展[J],2019,38(11):3527-3534.
APA	武海雯,杨秀艳,王计平,刘正祥,朱建峰,&张华新.(2019).沙枣改善盐碱土壤养分的研究进展.生态学杂志,38(11),3527-3534.
MLA	武海雯,et al."沙枣改善盐碱土壤养分的研究进展".生态学杂志 38.11(2019):3527-3534.