中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 黄土丘陵区草地生态系统不同植物群落土壤生态化学计量学特征 西北农业学报 2016,25 (5) 779-787
Position: Home > Articles > Study on Soil Microbial Biomass and Soil Ecological Stoichiometry Characteristics under Different Vegetation Types in the Loess Plateau Acta Agriculturae Boreali-occidentalis Sinica 2016,25 (5) 779-787

黄土丘陵区草地生态系统不同植物群落土壤生态化学计量学特征

作  者：
刘衡;吕家珑
单  位：
西北农林科技大学资源环境学院;农业部西北植物营养与农业环境重点实验室
关键词：
黄土高原;植物群落;生态化学计量学;微生物生物量;铁杆蒿
摘  要：
研究土壤微生物生物量碳、氮及其生态化学计量学特征指标对植物群落的响应,有助于准确评价植被恢复的生态环境效益。以黄土高原丘陵沟壑区草地生态系统下5种植物群落(茭蒿群落样地、沙棘群落样地、铁杆蒿群落样地、百里香群落、芦苇群落)土壤为对象,对土壤有机质(SOM),全氮(TN),全磷(TP),速效磷(AV.P),速效钾(AV.K),土壤微生物生物量氮(SMBN)和土壤微生物生物量碳(SMBC)及其化学计量特征进行研究。结果表明:5种植物群落下,表层土壤微生物生物量碳氮、有机质(SOM)、全氮(TN)显著高于下层土壤,铁杆蒿群落显著高于其他4种植物群落,其对土壤碳氮磷具有显著地累积作用,对于提高土壤碳氮磷储量具有重要的意义。土壤碳氮比(C∶N)在5种植被群落下较为稳定,土壤SOM与TN存在极显著的正相关性(P<0.01);土壤碳氮比(C∶N)、氮磷比(N∶P)受植被类型的影响较大,铁杆蒿群落显著高于其他4种植物群落,土壤C∶P、N∶P之间存在极显著的正相关性(P<0.01)。0~20cm和20~40cm土层SMBN、SMBC均表现为:铁杆蒿群落显著高于其他植被群落,说明不同植物群落对土壤表层和下层的微生物具有明显的影响。可见,植被恢复对土壤质量的改善作用明显,铁杆蒿群落对该区土壤碳氮磷等养分的累积作用较好。
译  名：
Study on Soil Microbial Biomass and Soil Ecological Stoichiometry Characteristics under Different Vegetation Types in the Loess Plateau
作  者：
LIU Heng;L Jialong;College of Natural Resource and Environment,Northwest A&F University;
关键词：
The Loess Plateau;;Vegetation types;;Soil ecological stoichiometry;;Soil microbial biomass;;Artemisia sacrorum
摘  要：
Response of vegetation restoration on the soil microbial biomass carbon and nitrogen and soil ecological stoichiometry characteristics will be helpful to accurately evaluate the ecological environment benefit for the vegetation restoration.5kinds of plant communities(Artemisia giraldii,Hippophae rhamnoides,Artemisia sacrorum,Thymus mongolicus and Phragmites australis)as subjects in Loess Plateau were studied in this paper.The soil organic matter(SOM),total nitrogen(TN),total phosphorus(TP),available P(AV.P),available potassium(AV.K),biomass nitrogen(SMBN),biomass carbon(SMBC)and its C∶N∶P ratios had been studied.The results showed that0-20 cm soil layer,the concentrations for SOM and TN were higher than those in 20-40 cm soil layer.These concentrations for Artemisia sacrorum were the highest,suggesting that Artemisia sacrorum could promote the accumulation of soil organic carbon and total nitrogen.The significant relationship between SOM and TN resulted in a narrow range for soil C∶N ratio(P<0.01).Vegetation types had a significant effect on soil N∶P ratio and C∶P ratio with the highest ones for Artemisia sacrorum.There was significant relationships between soil C ∶ P ratio and soil N ∶ P ratios(P<0.01).SMBC and SMBN for Artemisia sacrorum was the highest than the other four vegetation types regardless of soil layers,indicating that Artemisia sacrorum had much greater effects on the soil microbial biomass,which could improve the soil quality.In conclusion,Artemisia gmelinii is more suitable herb species than the other vegetation types in the process of vegetation restoration in the Loess Plateau.

相似文章

导出引用
计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46