Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1006/jare.1999.0497 |
Effect of nitrogen amendments on microbial biomass, above-ground biomass and nematode population in the Negev Desert soil | |
Alon, A; Steinberger, Y | |
通讯作者 | Steinberger, Y |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
出版年 | 1999 |
卷号 | 41期号:4页码:429-441 |
英文摘要 | Nitrogen amendments (0, 25, 50 and 100 kg NH4NO3/ha) were used to study the responses of primary production, microbial biomass and nematode population in desert soil. The study was conducted in the Israeli Negev Desert, a region characterized by low and randomly distributed rainfall. Over a 1-year study period, nitrogen amendments resulted in a significant (p < 0.01) increase in soil microbial biomass. Soil microbial biomass also increased concomitantly with the increase in soil organic matter. The number of free-living nematodes in the soil increased with the increase in soil moisture, ranging from 43,000 individuals per square metre at the end of the summer to 351,000 individuals per square metre during the rainy season. No significant correlation was found between the nitrogen treatments and the nematode population, whereas a significant positive correlation was found between the nitrogen amendments and the above-ground biomass (r(2) = 0.94, p < 0.03). The nitrate proportion of the total soluble nitrogen in the soil also increased with the increase in soil moisture. This study provides baseline data for nitrogen amendments on soil microbial status, as well as insights into the importance of nitrogen in fertility in arid environments. (C) 1999 Academic Press. |
英文关键词 | nitrogen amendments microbial biomass qCO(2) nematode population primary production |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000081318200006 |
WOS关键词 | SHRUB ZYGOPHYLLUM-DUMOSUM ; ABOVEGROUND BIOMASS ; MATURITY INDEX ; ORGANIC-MATTER ; ECOSYSTEM ; DYNAMICS ; DECOMPOSITION ; FERTILIZER ; PROFILE ; CANOPY |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/137562 |
作者单位 | (1)Bar Ilan Univ, Fac Life Sci, IL-52900 Ramat Gan, Israel |
推荐引用方式 GB/T 7714 | Alon, A,Steinberger, Y. Effect of nitrogen amendments on microbial biomass, above-ground biomass and nematode population in the Negev Desert soil[J],1999,41(4):429-441. |
APA | Alon, A,&Steinberger, Y.(1999).Effect of nitrogen amendments on microbial biomass, above-ground biomass and nematode population in the Negev Desert soil.JOURNAL OF ARID ENVIRONMENTS,41(4),429-441. |
MLA | Alon, A,et al."Effect of nitrogen amendments on microbial biomass, above-ground biomass and nematode population in the Negev Desert soil".JOURNAL OF ARID ENVIRONMENTS 41.4(1999):429-441. |
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