干旱区生态环境知识资源中心(Arid): 荒漠草原两种沙化草地对浅耕翻的响应

Arid

	荒漠草原两种沙化草地对浅耕翻的响应
其他题名	Responses of Two Types of Desertification Grasslands in Desert Steppe to Shallow Ploughing
	曲文杰; 宋乃平; 陈林; 刘秉儒; 杨新国
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2014
卷号	21 期号:1 页码:85-89,094
中文摘要	浅耕翻是退化草地改良的一项技术措施,其效果往往与表层土壤的退化程度与类型相关。为进一步认识荒漠草原退化草地浅耕翻措施的适用性及其作用机理,在宁夏盐池县选取覆沙草地(片沙覆盖型)和侵蚀草地(侵蚀粗化型)当地两种较为典型的退化草地类型,分别进行深翻(20 cm)和浅耕(5 cm)两种浅翻耕处理,分析其植被更新和土壤水分变化情况。结果表明,浅耕翻可有效减少猪毛蒿当季发生数量,激活土壤种子库,提高两种退化类型草地植被均匀性和多样性水平,但是深翻处理下植被盖度下降幅度较大。其中覆沙草地物种丰富度保持稳定,一年生的狗尾草和画眉草占据更为优势的地位,深翻处理下土壤水分向下层蓄积;侵蚀草地物种数明显下降,但指示种胡枝子在群落中的优势地位进一步提高,土壤水分则沿垂直剖面均匀增加,0100 cm 土壤蓄水量显著提高。浅耕翻是推动退化草地恢复演替的有效手段,其中浅耕更具普适性;但是综合植被更新和水分蓄积情况,深翻措施更适宜覆沙草地,浅耕措施对侵蚀草地则较适宜。
英文摘要	Shallow ploughing is an improvement technology on the degraded vegetation, and its effect is often strongly related to the soil conditions. To further study the applicability and mechanism of shallow ploughing in degraded desert steppes,covering sand grassland (sheet sand cover type) and erosion grassland (erosion coarsening type) were selected in Yanchi of Ningxia Hui Autonomous Region, vegetation update and soil moisture changes were analyzed for the deeply ploughed (20 cm) and shallowly ploughed (5 cm) treatments. The results showed that shallow plowing effectively suppressed scoparia quarter, activated the soil seed bank and raised uniformity and diversity of two degradation types of grassland vegetation, but deep plowing under vegetation cover declined a lot. Species richness in sand covering grassland remained stable,with dominant annual Set air a viridis (L.)Beauv and Eragrostis pilosa,and the soil moisture concentrated to the lower layer in deep plowing treatment. While the number of species in erosion coarsening type sand decreased sharply, but indicator Lespedeza bicolor in the community of the dominant position further improved, with soil moisture in the vertical profile uniform increasing, and 0100 cm soil water storage capacity significantly improving. Shallow plowing is an effective means to promote the restoration of degraded grassland succession; the shallow plowing is more universal. But in view of vegetation regeneration and moisture accumulation, the deep plowing measure is more suitable for sand covered grassland, and shallow plowing is more appropriate measures in erosion grassland.
中文关键词	荒漠草原 ; 浅耕翻 ; 植被更新 ; 覆沙草地 ; 侵蚀草地
英文关键词	desert steppe shallow ploughing vegetation update sand-covered grassland erosion grassland
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5089528
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/2XILL650/231780
作者单位	宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	曲文杰,宋乃平,陈林,等. 荒漠草原两种沙化草地对浅耕翻的响应[J]. 宁夏大学,2014,21(1):85-89,094.
APA	曲文杰,宋乃平,陈林,刘秉儒,&杨新国.(2014).荒漠草原两种沙化草地对浅耕翻的响应.水土保持研究,21(1),85-89,094.
MLA	曲文杰,et al."荒漠草原两种沙化草地对浅耕翻的响应".水土保持研究 21.1(2014):85-89,094.