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 > 川西北草地沙化对土壤可溶性有机氮及酶活性的影响 干旱地区农业研究 2018 (1) 66-71
Position: Home > Articles > Soil dissolved organic nitrogen and enzyme activities at different desertification grasslands in Northwest Sichuan Agricultural Research in the Arid Areas 2018 (1) 66-71

川西北草地沙化对土壤可溶性有机氮及酶活性的影响

作  者：
舒向阳;胡玉福;杨雨山;何佳;佘淑凤;贾安都;姜正博;孙锦杨
单  位：
四川农业大学管理学院;四川农业大学资源学院
关键词：
川西北草地;沙化;可溶性有机氮;土壤酶
摘  要：
为探究草地沙化对川西北高寒草地土壤可溶性有机氮及酶活性的影响,采用样地调查方法,研究了不同沙化程度草地可溶性有机氮、脲酶、蛋白酶、硝酸还原酶及精氨酸脱氨酶的变化特征。结果表明:随草地沙化程度加剧,土壤脲酶、蛋白酶、硝酸还原酶及精氨酸脱氨酶活性显著降低。与未沙化草地相比,重度沙化草地0~20cm土层脲酶、蛋白酶、硝酸还原酶及精氨酸脱氨酶活性分别降低了40.54%、30.68%、39.85%和44.00%;土壤可溶性有机氮随沙化程度增加呈下降趋势,相较于未沙化,轻度沙化、中度沙化和重度沙化草地土壤可溶性有机氮含量分别下降了22.36%、48.72%和67.77%,且0~20 cm土层变化最为显著。相关分析结果表明,酶活性与土壤氮素呈极显著正相关;硝酸还原酶与铵态氮、硝态氮、微生物量氮和可溶性有机氮的相关系数最高,分别达到0.868、0.850、0.789和0.701。
译  名：
Soil dissolved organic nitrogen and enzyme activities at different desertification grasslands in Northwest Sichuan
作  者：
SHU Xiang-yang;HU Yu-fu;YANG Yu-shan;HE Jia;SHE Shu-feng;JIA An-du;JIANG Zheng-bo;SUN Jin-yang;College of Resources,Sichuan Agricultural University;College of Management,Sichuan Agricultural University;
关键词：
grasslands in northwest Sichuan;;desertification;;dissolved organic nitrogen;;soil enzyme
摘  要：
In order to explore the changes of soil dissolved organic nitrogen and enzyme activities in the process of the alpine desertification grassland in Northwest Sichuan,we studied the dissolved organic nitrogen and the vertical distribution characteristics of urease,protease,nitrate reductase and arginine deaminase. The results showed that with the aggravation of desertification,all enzyme activities decreased sharply. Compared with the nondesertification grassland,the activities of urease,protease,nitrate reductase and arginine deaminase of the grassland were decreased by 40.54%,30.68%、39.85% and 44.00% at 0 ~ 20 cm soil depth,respectively. With the increase of the degree of desertification,soil dissolved organic nitrogen showed a declining trend. Compared with the non-desertification grassland,the soil dissolved organic nitrogen concentrations of light desertification grassland,middle desertification grassland,serious desertification grassland were decreased by 22.36%,48.72% and 67.77%respectively,especially at the 0 ~ 20 cm soil layer. Correlation analysis showed a significant positive correlation between soil enzyme activity and soil nitrogen.

相似文章

导出引用
计量
文章访问数: 6
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