干旱区生态环境知识资源中心(Arid): 黄土丘陵半干旱区天然草地土壤水分调控研究

Arid

	黄土丘陵半干旱区天然草地土壤水分调控研究
其他题名	Soil Water Regulation of the Natural Grassland of Semi-Arid Loess Hilly Region
	程积民; 万惠娥; 王静; 雍绍萍
来源期刊	草地学报
ISSN	1007-0435
出版年	2003
卷号	11 期号:4 页码:296-300
中文摘要	以黄土丘陵半干旱区天然草地土壤水分为重点，研究封育和未封草地土壤水分的消耗与恢复过程。结果表明：平水处封育草地鲜草产量达5860.7kg/hm~2，未封草地鲜草产量仅785.4kg/hm~2，植物生长期降水补充量封育草地39.4mm，未封草地29.2mm；在丰水年干物质生产2.65kg/(hm~2·mm)；平水年1.94kg/(hm~2·mm)；枯水年仅0.64kg/(hm~2·mm)。在未封草地上采用工程整地措施修筑蓄水带和畜水沟，13年0～500cm土壤含水量为11.3%～13.5%，比对照提高3.0～5.2个百分点，鲜草产量提高5～8倍。采用调控措施集蓄土壤水分是促进植物生长和提高草地生产力的关键。
英文摘要	A Study of the depletion and restoration of soil water in closed and non-closed natural grassland of the semi-arid loess hilly region shows that with normal rainfall) the yearly fresh yield on the closed grassland amounts to 5860.7 kg/hm~2 while that of the non-closed grassland is only 785.4 kg/hm2. During the plant growing period,compensatory water for the closed grassland totalled 39. 4 mm, and for the non-closed one, 29. 2 mm. In an abundant precipitation year, the grassland’s dry substance yield averaged 2.65 kg/(hm~2·mm) j in a mormal precipitation year, l.94 kg/(hm2·mm), and merely 0. 64 kg/(hm2·mm) in a scanty precipitation year. In the non-closed grassland,construction of water-storing ditches and wells had increased the water conent of soil of 0~500 cm depth 11.5%~13.5% in 13 years (1987~1999), 3%~5.2% higher than the grassland without constructing any water-storing projects, and had increased the fresh yield by 5~8 times. The soil water regulation plans promote the growth of plant and raise the grassland yield.
中文关键词	草原学 ; 黄土丘陵区 ; 天然草地 ; 土壤水分特征 ; 土壤水分调控
英文关键词	grassland science loess hilly region natural crassland characteristic and regulation of soil water
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:1252035
来源机构	西北农林科技大学 ; 中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203844
作者单位	中国科学院水利部水土保持研究所，西北农林科技大学水土保持研究所, 杨陵, 陕西 712100, 中国
推荐引用方式 GB/T 7714	程积民,万惠娥,王静,等. 黄土丘陵半干旱区天然草地土壤水分调控研究[J]. 西北农林科技大学, 中国科学院水利部水土保持研究所,2003,11(4):296-300.
APA	程积民,万惠娥,王静,&雍绍萍.(2003).黄土丘陵半干旱区天然草地土壤水分调控研究.草地学报,11(4),296-300.
MLA	程积民,et al."黄土丘陵半干旱区天然草地土壤水分调控研究".草地学报 11.4(2003):296-300.