干旱区生态环境知识资源中心(Arid): 干热河谷区灌草草地的水土保持效应

Arid

	干热河谷区灌草草地的水土保持效应
其他题名	Soil and Water Conservation Function of Composite Shrub Grasslands on the Hot Arid Valley in Yunnan Province
	毕玉芬; 车伟光; 许岳飞
ISSN	1000-2561
出版年	2009
卷号	30 期号:8 页码:1176-1180
中文摘要	为了恢复干热河谷退化山区草地的生态环境.提高草地的水土保持能力,于2004～2007年在金沙江干热河谷区的云南省永胜县设置样点.在退化严重的草地上建植了7个组合模式的灌草复合型草地,以凋落物量、最大持水量、有效截流量、草地盖度、草地土壤崩解时间为指标.对建植3年的灌草草地的水保效果进行研究.结果表明."灌+草+藤"最适宜金沙江干热河谷区的植被重建.其中"木豆+非洲狗尾草+高羊茅+大翼豆"建植模式显著地提高草地植被盖度和凋落物重量.凋落物的持水能力与凋落物重量呈显著的正相关;土壤根量与土体崩塌时间呈显著的正相关.灌草草地植被盖度、凋落物量和根系重量的显著提高,有效地提高草地的持水量和有效截流量,推迟草地土壤崩解时间,增加了土体的稳定性,对防止水土流失和泥石流的形成具有重要作用.
英文摘要	In order to recover ecological environment and enhance soil and water conservation capacity of degraded mountainous grasslands in the hot arid valley,7 combined patterns for shrub-grass communities were established on the degraded mountains in the Jinsha River hot-arid valley at Yongsheng County of Yunnan Province from 2004 to 2007. In 2007,litter weight,the largest water-holding capacity,effective cut-off flow,grass cover and grassland soil disintegration time of grassland in this hot arid valley were analyzed. The results showed that "shrub+grass+vine" was the most favorable pattern for vegetation recovery in the area of Jinsha River hot-arid valley. Among them,the combination of "Cajanus cajan + Setaria sphacelata + Festuca arundinacea + Macroptilium atropurpureum" significantly improved the grassland vegetation coverage and litter weight. The water retention capacity was significantly correlated with weight of the litter. Soil root biomass was significantly positively correlated with the soil disintegration time. Significant increase in vegetation cover,litter and root weight of shrub-grass vegetation effectively improved the water-holding capacity and the cut-off flow,delayed the soil disintegration time,and consolidated soil stability,and it is hence of great importance to prevent the mountainous grassland in the hot arid valley from soil erosion and land slide.
中文关键词	干热河谷区 ; 退化山地草地 ; 灌草复合型草地 ; 水土保持
英文关键词	Jinsha river hot-arid valley degraded mountainous grassland composite shrub-grassland soil and water conservation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3709690
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223991
作者单位	云南农业大学草业科学系, 昆明, 云南 650201, 中国
推荐引用方式 GB/T 7714	毕玉芬,车伟光,许岳飞. 干热河谷区灌草草地的水土保持效应[J],2009,30(8):1176-1180.
APA	毕玉芬,车伟光,&许岳飞.(2009).干热河谷区灌草草地的水土保持效应.,30(8),1176-1180.
MLA	毕玉芬,et al."干热河谷区灌草草地的水土保持效应".30.8(2009):1176-1180.