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Earthworm biomass and abundance, soil chemical and physical properties under different poplar plantations in the north of Iran

机译:伊朗北部不同杨树人工林的worm生物量和丰度,土壤化学和物理性质

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摘要

We evaluated earthworm abundance and biomass in plantations of different poplar species and clones as well as the effect of some soil chemical and physical properties on them. Even-aged poplar species and clones, planted at Safrabasteh Poplar ResearchStation about 18 years ago in the north of Iran, included: Popu-lus deltoides Bartr. cv. 69/55 (P. d. 69/55), Populus deltoides Bartr. cv. 63/51 (P. d. 63/51), Populus euramericana Guinier. cv. 45/51 (P. e. 45/51), Populus euramericana Guinier. triplo (P. e. triplo), and Populus caspica Born M. {P. caspica), as endemic and endangered poplar species, were selected in this study. Earthworm abundance and biomass, soil texture, bulk and particle density (BD, PD), pH, organic carbon (OC), total nitrogen (N), available phosphorus (P) and exchangeable potassium (K) were evaluated. The results showed that the earthworm abundance and biomass, OC, P and N in P. d. 63/51 were higher than in the other poplar species and clones. The correlation coefficients showeda positive correlation of OC, N and a negative correlation of pH, clay, BD and P with earthworm biomass. Based on the results, compared to the other species and clones P. d. 63/51 creates favourable conditions to produce more organic matter and higher abundance and biomass of earthworms, hence it could be beneficial for maintaining the soil quality status for successive plantings.
机译:我们评估了不同杨树物种和克隆的人工林中worm的丰度和生物量,以及一些土壤化学和物理特性对其的影响。大约18年前在伊朗北部的Safrabasteh Poplar ResearchStation上种植的偶龄白杨树种和无性系包括:Popu-lus deltoides Bartr。简历。 69/55(P. d。d。69/55),Populus deltoides Bartr。简历。 63/51(p。d。63/51),Populus euramericana Guinier。简历。 45/51(P. e。45/51),欧洲杨(Populus euramericana Guinier)。 Triplo(P. e。triplo)和Populus caspica Born M. {P.在本研究中选择了作为特有和濒临灭绝的白杨树种。评估了worm的丰度和生物量,土壤质地,体积和颗粒密度(BD,PD),pH,有机碳(OC),总氮(N),有效磷(P)和可交换钾(K)。结果表明,P中worm的丰度和生物量,OC,P和N含量较高。 63/51高于其他杨树品种和克隆。相关系数显示with,氮与土壤生物量呈正相关,pH,黏土,BD和P呈负相关。根据结果​​,与其他物种和克隆相比。 63/51为创造更多的有机物质,提高more的生物量和生物量创造了有利条件,因此可能有利于维持后续种植的土壤质量状况。

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