干旱区生态环境知识资源中心(Arid): 补播对宁夏荒漠草原植物群落及土壤理化性状的影响

Arid

	补播对宁夏荒漠草原植物群落及土壤理化性状的影响
其他题名	Effects of supplementary sowing on plant community and soil physical and chemical properties in Ningxia desert steppe
	吴宛萍; 马红彬; 陆琪; 周瑶; 宿婷婷; 朱琳
来源期刊	草业科学
ISSN	1001-0629
出版年	2020
卷号	37 期号:10
中文摘要	研究补播对草地植被和土壤的影响可为退化草地植被建设提供依据。在宁夏荒漠草原,对补播乡土植物3年后的草地、禁牧封育草地的植物组成、植物群落特征、多样性和稳定性、草地0 - 40 cm土壤水分和理化性质进行了研究,分析了植被变化与土壤性状的关系。结果表明:1)补播草地植物物种数增加,豆科植物和一年生植物比例增加,多年生和半灌木比例降低。2)补播使草地植物丰富度、盖度、高度和地上生物量增加,群落稳定性明显提高(P < 0.05),但未改变草地物种多样性、均匀度和优势度。3)土壤表层的水分含量呈补播草地大于封育草地,土壤持水性、毛管孔隙度、总孔隙度、有机质以补播草地较高,速效钾含量在30 - 40 cm处为补播草地大于封育草地,但土壤全氮和碱解氮处理间无显著差异(P > 0.05)。4)土壤有机碳含量和田间持水量是影响植被特征的最显著因子。研究结果表明,因地制宜进行退化荒漠草原补播,可提高草地生产力,改善草原植物群落及其土壤养分和水分环境。
英文摘要	Studying the effects of supplementary sowing on grassland vegetation and soil provides a basis for restoration of degraded grasslands. In the Ningxia desert steppe, grassland protected from grazing and grassland after three years of restoration (by supplementary sowing of native species) were sampled for plant composition and community characteristics, diversity and stability. In addition, soil moisture and physicochemical properties of the 0 - 40 cm soil layer were determined. The relationship between vegetation changes and soil properties was analyzed. The results showed that: 1) The number of plant species in the restoration grassland increased; however, whereas the proportion of legumes and annual plants increased, the proportion of perennials and semi-shrubs decreased. 2) Supplementary sowing increased grass plant richness, coverage, height, and aboveground biomass, and the community stability improved significantly (P < 0.05); however, grassland species diversity, uniformity and dominance were unchanged. 3) The moisture content of the restoration grassland soil was higher than that of the enclosed grassland, as were the soil water holding capacity, capillary porosity, total porosity, and organic matter content. The available potassium content at 30 - 40 cm was higher in the restoration than in the enclosed grassland, but there was no significant difference in soil total nitrogen and alkaline hydrolysis nitrogen between the two grasslands (P > 0.05). 4) Soil organic carbon content and field water holding capacity were the most significant factors affecting the vegetation characteristics. It was concluded that supplementary sowing of degraded desert grasslands, according to local conditions, can improve grassland productivity, plant communities, soil nutrients, and the soil-water balance.
中文关键词	荒漠草原 ; 补播 ; 植物群落特征 ; 土壤理化性质 ; 土壤水分
英文关键词	desert steppe supplementary sowing plant community characteristics soil physicochemical properties soil moisture
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6851248
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353346
作者单位	吴宛萍, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 陆琪, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 周瑶, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 宿婷婷, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 朱琳, 宁夏大学农学院, 银川, 宁夏 750021, 中国. 马红彬, 宁夏大学农学院;;宁夏大学, ;;西北土地退化与生态恢复宁夏省部共建国家重点实验室培育基地, 银川;;银川, 宁夏;;宁夏 750021;;750021, 中国.
推荐引用方式 GB/T 7714	吴宛萍,马红彬,陆琪,等. 补播对宁夏荒漠草原植物群落及土壤理化性状的影响[J]. 宁夏大学,2020,37(10).
APA	吴宛萍,马红彬,陆琪,周瑶,宿婷婷,&朱琳.(2020).补播对宁夏荒漠草原植物群落及土壤理化性状的影响.草业科学,37(10).
MLA	吴宛萍,et al."补播对宁夏荒漠草原植物群落及土壤理化性状的影响".草业科学 37.10(2020).