干旱区生态环境知识资源中心(Arid): 封育对荒漠草原枯落物蓄积量的影响

Arid

	封育对荒漠草原枯落物蓄积量的影响
其他题名	Effects of Closing Grazing on the Litter Amount in Desert Steppe
	陈晓莹; 宋乃平; 李敏岚; 吴婷; 陈娟
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2019
卷号	36 期号:5 页码:1168-1174
中文摘要	为了深入研究围栏封育和围栏放牧两种利用方式对荒漠草原植物向土壤养分归还的影响,以宁夏盐池县3个成对封育围栏和放牧围栏(放牧率分别为0.58、0.65、0.80只羊·hm~(-2))为研究对象,利用样线调查法、方差分析法对两种利用方式在灰钙土和风沙土土壤基质下枯落物的蓄积量、不同生活型植物的枯落物含量及影响因子的研究,探讨了枯落物蓄积量对草原利用方式与土壤基质的响应。结果表明:①围封对枯落物蓄积量具显著影响。荒漠草原封育围栏枯落物蓄积量在53.2~141.9 g·m~(-2),是其放牧围栏的2.82倍。②灰钙土上封育围栏枯落物蓄积量是放牧围栏的3.86倍,但两种围栏在风沙土上的枯落物蓄积量却没有显著差别。③与地上生物量相比,草本植物在枯落物蓄积量结构中的下降以及灌木在蓄积量中的增加,可能是分解转化难易程度导致的。
英文摘要	In this study,the line intercept method and variance analysis were used to analyze the effects of closing grazing and fenced grazing on the soil nutrient content in desert steppe.The litter amount over two soil matrixes (aeolian sand soil and sierozem) in three-paired enclosure plots and fenced grazing plots fenced for different years in Yanchi County,Ningxia Hui Autonomous Region were studied,where the grazing rates were 0.58,0.65 and 0.80 sheep·hm~(-2).respectively.The response of litter accumulation to grassland utilization and soil matrix was discussed.The results showed that:① There was a significant effect of enclosure on the litter amount in the community.The litter amount in the enclosure plots in desert steppe varied in a range of 53.2-141.9 g·m~(-2),and it was 2.82 times of that in the fenced grazing plots;② There was no significant difference in litter amount between the two kinds of plots on the aeolian sandy soil;on sierozem,however,the litter amount in the enclosure plot was 3.86 times of that in the fenced grazing plot;③ Compared with the above-ground biomass,the reduction of litter amount of herbaceous plants and the increase of litter amount of shrub plants may be caused by the difference of decomposition and transformation.
中文关键词	荒漠草原 ; 封育 ; 枯落物 ; 蓄积量 ; 盐池县
英文关键词	desert steppe fenced enclosure plot litter amount Yanchi County
语种	中文
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6562656
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/2XILL650/315827
作者单位	宁夏大学, 西北退化生态系统恢复与重建教育部重点实验室;;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, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	陈晓莹,宋乃平,李敏岚,等. 封育对荒漠草原枯落物蓄积量的影响[J]. 宁夏大学,2019,36(5):1168-1174.
APA	陈晓莹,宋乃平,李敏岚,吴婷,&陈娟.(2019).封育对荒漠草原枯落物蓄积量的影响.干旱区研究,36(5),1168-1174.
MLA	陈晓莹,et al."封育对荒漠草原枯落物蓄积量的影响".干旱区研究 36.5(2019):1168-1174.