干旱区生态环境知识资源中心(Arid): 荒漠草原4种主要植物群落枯落物层水土保持功能

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	荒漠草原4种主要植物群落枯落物层水土保持功能
其他题名	Litter Layer of Soil and Water Conservation Function of Four Plant Communities in Desert Steppe
	李学斌 1; 吴秀玲 2; 陈林1 ; 张硕新 3; 谢应忠 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2012
卷号	26 期号:4 页码:189-193,244
中文摘要	枯落物层是草地除冠层外,大气与矿质土壤层、植物根系层进行物质与能量交换的重要介质,在生态学中起着不可替代的作用。通过研究荒漠草原4种主要植物群落(蒙古冰草群落、甘草群落、赖草群落和沙蒿群落)水土保持功能,结果表明:荒漠草原4种植物群落枯落物层年截留率在4.58%~5.61%,截留量为22.77~27.87mm,且枯落物对降雨的截留量随降雨量增加而增大,而截留率随降雨量增加而减小,当降雨等级在0~2mm时,截留率为100%,当降雨等级高于2mm时,截留率随1次降雨降雨量的增加而减少。枯落物层抑制土壤蒸发的效应与枯落物层厚度的增加呈正相关,有枯落物层比无枯落物层覆盖的土壤蒸发量减少了19.25%~76.82%,但当土壤含水量升高为田间持水量的3/4时,不同植物群落枯落物减少土壤水分蒸发的效应有所不同。围封内枯落物对土壤风蚀的抑制显著低于围封外,枯落物对风蚀的抑制作用与枯落物的蓄积量呈正相关。
英文摘要	Litter layer is an important mediator of grass for the atmosphere and the mineral soil layer,the plant root zone material and energy exchange as the canopy,it plays an irreplaceable role in ecology.Soil and water conservation of the four major plant communities in the desert steppe(Mongolia wheatgrass community,licorice communities,leymus communities and artemisia communities) were researched.The results showed that: The litter layers interception rate was 4.58%~5.61%,interception was 22.77~27.87 mm in four kinds of desert steppe plant communities,and litter interception was increased with rainfall,while the rejection rate decreased,when rainfall level was in the 0~2 mm,the interception rate was 100%,when the rainfall level was higher than 2 mm,the interception rate increased with the decreased of rainfall.The effects of inhibition soil evaporation was positively correlated with thickness of litter layer,the evaporation of litter layer covering of soil was less 19.25% to 76.82% than uncovering,but when the soil water content was the field capacity of 3/4,the effects of different litters to reduce soil moisture evaporation was different.And enclosed within the litter on soil erosion in inhibition was significantly lower than the enclosure,the inhibitory effect of litter on the wind erosion was positive correlation with the accumulation of litter.
中文关键词	荒漠草原 ; 枯落物 ; 水土保持功能
英文关键词	desert steppe litter function of soil and water conservation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4611196
来源机构	西北农林科技大学 ; 宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228596
作者单位	1.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; 2.宁夏农业勘查设计院, 银川, 宁夏 750001, 中国; 3.西北农林科技大学林学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	李学斌,吴秀玲,陈林,等. 荒漠草原4种主要植物群落枯落物层水土保持功能[J]. 西北农林科技大学, 宁夏大学,2012,26(4):189-193,244.
APA	李学斌,吴秀玲,陈林,张硕新,&谢应忠.(2012).荒漠草原4种主要植物群落枯落物层水土保持功能.水土保持学报,26(4),189-193,244.
MLA	李学斌,et al."荒漠草原4种主要植物群落枯落物层水土保持功能".水土保持学报 26.4(2012):189-193,244.