干旱区生态环境知识资源中心(Arid): 荒漠草原典型植物群落枯落物蓄积量及其持水性能

Arid

	荒漠草原典型植物群落枯落物蓄积量及其持水性能
其他题名	Water Holding Capacity and Capita Storage of Plant Community Litter in Representative Desert Steppe
	李学斌 1; 陈林1 ; 田真 2; 王新云 1; 刘秉儒 1; 刘任涛 1; 谢应忠 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2011
卷号	25 期号:6 页码:144-147
中文摘要	通过对荒漠草原4种典型植物群落（蒙古冰草群落、甘草群落、赖草群落、沙蒿群落）枯落物蓄积量的调查，结合室内持水试验，运用数理统计的方法分别得到4种典型植物群落枯落物的蓄积量、最大持水量、吸水速率等水文特征参数。结果表明：荒漠草原不同植物群落枯落物蓄积量在50.8~396.2g/m~2，其蓄积量由大到小为蒙古冰草群落>甘草群落>赖草群落>沙蒿群落，与植物群落地上生物量变化是一致的；4种植物群落枯落物最大持水量存在一定差异，蒙古冰草群落、甘草群落、赖草群落、沙蒿群落枯落物最大持水量分别相当于0.934,0.737,0.656,0.230mm的降雨。这4种枯落物最大可吸收其自身重量2.45~3.71倍的降雨；4种植物群落枯落物的持水量与时间呈线性相关，在浸水的前2h枯落物吸水速率最快，随着时间的延长，趋势逐渐变缓，当枯落物在水中浸泡12h时，其持水量基本达到最大值；4种植物群落枯落物吸水速率与时间呈指数相关，在浸水的前2h吸水速率较快，4~12h后逐步减缓。荒漠草原枯落物蓄积、覆盖所引起的水分蓄存与运移已经成为荒漠草原生态系统最为关键的生态过程之一。
英文摘要	within investigating and water holding experiment indoors to the four species (Agropyron mongolicum, Glycyrrhiza uralensis, Leymus secalinus, and Artemisia desertorum) of representative plant community in desert steppe, using the methods of the mathematical statistics, and gained the hydrological features parameters including the capita storage, the maximum capita storage of water holding, water absorption rate and etc. The results showed that enclosure and grazing prohibition on the different capita storage of plant community litter had been in 50.8 g/m~2 to 396.2 g/m~2. The capita storage of the plant community litter was from larger to little as Agropyron mongolicum>Glycyrrhiza uralensis>Leymus secalinus>Artemisia desertorum,and this result was concordant with the variety of aboveground biomass. The maximum capita storage of water holding had some diffeneces on litter of the four plant community. The maximum capita storage of water holding of Agropyron mongolicum, Glycyrrhiza uralensis, Leymussecalinus,and Artemisia desertorum were equivalent to the 0.934, 0.737, 0.656, 0.230 mm depth of rainfall. The maximum capita storage of water holding to fours kinds of litters was 2.45~3.71 times to these weights. The capita storage of water holding showed linear correlation of time. The water absorption rate was fastest 2 hours before soaking, and 4~12 hours later the rate began to slow down. After enclosure and grazing prohibition, from the accumulation and plant cover of the litters on the representative desert steppe,the moisture content of storage and transmission had been the most key ecological process to ecosystem of the desert steppe.
中文关键词	荒漠草原 ; 枯落物 ; 蓄积量 ; 持水性能
英文关键词	desert steppe litter capita storage water holding capacity
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:4389926
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/2XILL650/227092
作者单位	1.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, 银川, 宁夏 750021, 中国; 2.宁夏大学科技处, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	李学斌,陈林,田真,等. 荒漠草原典型植物群落枯落物蓄积量及其持水性能[J]. 宁夏大学,2011,25(6):144-147.
APA	李学斌.,陈林.,田真.,王新云.,刘秉儒.,...&谢应忠.(2011).荒漠草原典型植物群落枯落物蓄积量及其持水性能.水土保持学报,25(6),144-147.
MLA	李学斌,et al."荒漠草原典型植物群落枯落物蓄积量及其持水性能".水土保持学报 25.6(2011):144-147.