摘要
以黄土丘陵沟壑区不同土壤侵蚀程度下的猪毛蒿、铁杆蒿、茭蒿3种蒿属种子为研究对象,对3种植物种子产量与萌发特性进行了估算与观测,分析3种蒿类种子的产量、萌发率与土壤侵蚀程度的关系。结果表明:土壤侵蚀程度的不同,对种子产量与萌发率的影响很大,土壤侵蚀越严重,种子的有效性越低;同时,种子产量与种子的萌发率具有一致性,同一立地的种子产量高,其萌发率也高,说明种子的产量与萌发率对土壤侵蚀变化的响应是一致的。
The seed yield and seed germination characteristics of 3 Artemisia species i.e.Artemisia scoparia,Artemisia gmelinii and Artemisia giralaii under different soil erosion conditions were estimated and observed in the hilly-gullied Loess Plateau,and the relationship of seed yield and seed germination rate with soil erosion degree of the 3 Artemisia species were analyzed.The results showed that the degree of soil erosion have a great impact on seed yield and seed germination rate,the more serious soil erosion,the lower availability of seed.And the variation of seed production and seed germination rate has consistency,the site having high seed yield,the germination rate in the site was also high,indicating seed yield and seed germination rate have the same response to the change of soil erosion.
出处
《水土保持研究》
CSCD
北大核心
2010年第1期56-61,共6页
Research of Soil and Water Conservation
基金
国家自然科学基金面上项目"黄丘区土壤种子库分布格局及植被恢复的土壤侵蚀解释"(40771126)
关键词
黄土丘陵沟壑区
土壤侵蚀
种子产量
萌发特性
种子有效性
hilly-gullied Loess Plateau
soil erosion
seed yield
germination characteristic
seed availability
