Study on soil nutrient characteristics of Picea schrenkiana var. Tianschanica forest with different canopy densities

doi:10.6048/j.issn.1001-4330.2023.09.016

Xinjiang Agricultural Sciences ›› 2023, Vol. 60 ›› Issue (9): 2216-2222.DOI: 10.6048/j.issn.1001-4330.2023.09.016

• Horticultural Special Local Products·Storage and Preservation Processing·Forestry • Previous Articles Next Articles

Study on soil nutrient characteristics of Picea schrenkiana var. Tianschanica forest with different canopy densities

XI Li(), LI Siyao, XIA Xiaoying, CHEN Yuwen, LI Lin, WANG Jie, MA Xiaolong, Mierzhati Kenijialimu, Aliye Maimaiti, WANG Weixia()

Key Laboratory of Forestry Ecology and Industrial Technology in Arid Area, Xinjiang Education Department/College of Forestry and Landscape Architecture, Xinjiang Agricultural University, Urumqi 830052, China

Received:2022-12-04 Online:2023-09-20 Published:2023-09-19
Correspondence author: WANG Weixia(1981-), female, native place: Xinjiang, associate professor, research direction: Forest ecology and management, (E-mail) wangweixia0993@163.com
Supported by:
National College Students Innovation and Entrepreneurship Training Program Project“Effects of Different Elevation Gradients on Soil Organic Carbon in Picea schrenkiana Forest”(202110758008);National Natural Science Foundation “Effects of Different Land Use Types on Soil Organic Carbon in Southern Xinjiang Basin”(31760199)

不同郁闭度天山云杉林土壤养分特征

席丽(), 李思瑶, 夏晓莹, 陈玉雯, 李林, 王杰, 马小龙, 米尔扎提·柯尼加里木, 阿丽耶·麦麦提, 王卫霞()

新疆农业大学林学与风景园林学院/新疆教育厅干旱区林业生态与产业技术重点实验室,乌鲁木齐 830052

通讯作者: 王卫霞(1981-),女,新疆乌鲁木齐人,副教授,研究方向为森林生态与经营,(E-mail)wangweixia0993@163.com
作者简介:席丽(1997-),甘肃陇西人,硕士研究生,研究方向为森林生态与经营,(E-mail)193848534@qq.com
基金资助:
国家级大学生创新创业训练计划项目“不同海拔梯度对天山云杉林土壤有机碳的影响”(202110758008);国家自然科学基金项目“南疆盆地不同土地利用方式对土壤有机碳库的影响”(31760199)

Abstract

Abstract:

【Objective】 To explore the characteristics of soil nutrients in Picea schrenkiana var.tianschanica forest under different canopy densities in the hope of providing a theoretical basis for the sustainable management of the forest.【Methods】 Picea schrenkiana var.tianschanica forest with different canopy densities were taken as the research object, the effects of different canopy densities on Soil Nutrient Characteristics of the forest were analyzed and discussed by combining field sample investigation and indoor soil measurement and analysis.【Results】 (1)The soil nutrients of Picea schrenkiana var.tianschanica forest with different canopy density showed medium variability and obvious surface aggregation, mainly concentrated in 0-20 cm soil layer.(2) The contents of soil organic matter, alkali hydrolyzable nitrogen, available phosphorus and total nitrogen in 0-20 cm soil layer increased with the increase of canopy density, and the contents of soil organic matter and total nitrogen increased significantly (P<0.05); The variation trend of soil nutrient content in 20-60 cm soil layer with canopy density was inconsistent and had no significant difference.In the whole soil profile, when the canopy density of Picea schrenkiana var.tianschanica forest reached 0.8, it was more conducive to the accumulation of soil nutrients.(3) There was a positive correlation between soil nutrients, and there was a very significant positive correlation between organic matter and alkali hydrolyzable nitrogen, available phosphorus and total nitrogen.【Conclusion】 Canopy density has a significant effect on surface soil organic matter and total nitrogen of Picea schrenkiana var.tianschanica forest(P<0.05).Canopy density of 0.8 is more conducive to soil nutrient accumulation of Picea schrenkiana var.tianschanica forest.

Key words: canopy density; Picea schrenkiana var.tianschanica forest; soil nutrient

摘要：

【目的】研究不同郁闭度下天山云杉林土壤养分特征,为天山云杉林的可持续经营提供理论依据。【方法】以不同郁闭度的天山云杉林为研究对象,采用野外样地调查和室内土壤测定分析相结合方法,分析不同郁闭度对天山云杉林土壤养分特征的影响。【结果】(1) 不同郁闭度天山云杉林土壤养分均为中等变异性,具有明显的聚表性,主要集中在0~20 cm土层。(2) 0~20 cm土层土壤有机质、碱解氮、速效磷、全氮含量均随郁闭度的增大呈递增的趋势,其中土壤有机质和全氮含量增加显著(P<0.05);20~60 cm土层土壤各养分含量随郁闭度变化其变化趋势不一致且均无显著差异。整个土壤剖面上天山云杉林郁闭度达到0.8时更有利于土壤养分的积累。(3) 土壤各养分之间均存在正相关关系,其中有机质与碱解氮、速效磷、全氮两两之间呈极显著正相关。【结论】郁闭度对天山云杉林表层土壤有机质、全氮有显著影响(P<0.05),郁闭度0.8条件下更有利于天山云杉林土壤养分的积累。

关键词: 郁闭度, 天山云杉林, 土壤养分

CLC Number:

S757
S153

XI Li, LI Siyao, XIA Xiaoying, CHEN Yuwen, LI Lin, WANG Jie, MA Xiaolong, Mierzhati Kenijialimu, Aliye Maimaiti, WANG Weixia. Study on soil nutrient characteristics of Picea schrenkiana var. Tianschanica forest with different canopy densities[J]. Xinjiang Agricultural Sciences, 2023, 60(9): 2216-2222.

席丽, 李思瑶, 夏晓莹, 陈玉雯, 李林, 王杰, 马小龙, 米尔扎提·柯尼加里木, 阿丽耶·麦麦提, 王卫霞. 不同郁闭度天山云杉林土壤养分特征[J]. 新疆农业科学, 2023, 60(9): 2216-2222.

Figures/Tables 5

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郁闭度 Canopy density		海拔 Aititude (m)	坡度 Slope gradient	坡向 Slope direction	坡位 Slope position	龄组 Stand age
0.2	Ⅰ	2 070	28	阴坡	上坡	中龄林
	Ⅱ	2 001	20	阴坡	中坡	中龄林
	Ⅲ	2 017	29	阴坡	中坡	中龄林
0.4	Ⅰ	2 099	25	阴坡	上坡	中龄林
	Ⅱ	1 990	28	阴坡	上坡	中龄林
	Ⅲ	1 911	25	阴坡	上坡	中龄林
0.6	Ⅰ	2 067	24	阴坡	上坡	中龄林
	Ⅱ	1 972	22	阴坡	中坡	中龄林
	Ⅲ	1 944	19	阴坡	中坡	中龄林
0.8	Ⅰ	1 947	24	阴坡	上坡	中龄林
	Ⅱ	1 970	27	阴坡	上坡	中龄林
	Ⅲ	1 949	21	阴坡	上坡	中龄林

郁闭度 Canopy density		海拔 Aititude (m)	坡度 Slope gradient	坡向 Slope direction	坡位 Slope position	龄组 Stand age
0.2	Ⅰ	2 070	28	阴坡	上坡	中龄林
	Ⅱ	2 001	20	阴坡	中坡	中龄林
	Ⅲ	2 017	29	阴坡	中坡	中龄林
0.4	Ⅰ	2 099	25	阴坡	上坡	中龄林
	Ⅱ	1 990	28	阴坡	上坡	中龄林
	Ⅲ	1 911	25	阴坡	上坡	中龄林
0.6	Ⅰ	2 067	24	阴坡	上坡	中龄林
	Ⅱ	1 972	22	阴坡	中坡	中龄林
	Ⅲ	1 944	19	阴坡	中坡	中龄林
0.8	Ⅰ	1 947	24	阴坡	上坡	中龄林
	Ⅱ	1 970	27	阴坡	上坡	中龄林
	Ⅲ	1 949	21	阴坡	上坡	中龄林

土层 Soil depth	指标 Index	极小值 Min	极大值 Max	均值 Mean	标准差 SD	偏度 Skewness	峰度 Kurtosis	K-S Sig	变异系数 CV(%)
0~20 cm	有机质(g/kg)	57.54	248.09	154.03	58.56	-0.03	-1.02	0.20	38
	碱解氮(mg/kg)	65.06	189.35	106.25	37.43	1.22	1.04	0.19	35
	速效磷(mg/kg)	14.34	30.64	23.36	5.89	-0.15	-1.52	0.18	25
	速效钾(mg/kg)	109.16	186.22	138.12	21.82	1.26	1.30	0.13	16
	全氮(g/kg)	1.65	6.77	4.59	1.52	-0.38	-0.42	0.20	33
20~60cm	有机质(g/kg)	22.29	77.96	38.78	18.39	1.18	0.36	0.20	47
	碱解氮(mg/kg)	22.07	78.38	47.12	19.79	0.08	-1.53	0.20	42
	速效磷(mg/kg)	5.60	28.28	13.65	7.61	1.10	-0.26	0.20	56
	速效钾(mg/kg)	74.92	142.25	115.00	17.82	-0.69	1.25	0.20	15
	全氮(g/kg)	0.70	2.20	1.24	0.50	0.59	-0.71	0.20	40

土层 Soil depth	指标 Index	极小值 Min	极大值 Max	均值 Mean	标准差 SD	偏度 Skewness	峰度 Kurtosis	K-S Sig	变异系数 CV(%)
0~20 cm	有机质(g/kg)	57.54	248.09	154.03	58.56	-0.03	-1.02	0.20	38
	碱解氮(mg/kg)	65.06	189.35	106.25	37.43	1.22	1.04	0.19	35
	速效磷(mg/kg)	14.34	30.64	23.36	5.89	-0.15	-1.52	0.18	25
	速效钾(mg/kg)	109.16	186.22	138.12	21.82	1.26	1.30	0.13	16
	全氮(g/kg)	1.65	6.77	4.59	1.52	-0.38	-0.42	0.20	33
20~60cm	有机质(g/kg)	22.29	77.96	38.78	18.39	1.18	0.36	0.20	47
	碱解氮(mg/kg)	22.07	78.38	47.12	19.79	0.08	-1.53	0.20	42
	速效磷(mg/kg)	5.60	28.28	13.65	7.61	1.10	-0.26	0.20	56
	速效钾(mg/kg)	74.92	142.25	115.00	17.82	-0.69	1.25	0.20	15
	全氮(g/kg)	0.70	2.20	1.24	0.50	0.59	-0.71	0.20	40

土层 Soil depth (cm)	郁闭度 Canopy density	有机质 Organic matter (g/kg)	碱解氮 Alkaline nitrogen (mg/kg)	速效磷 Available phosphorus (mg/kg)	速效钾 Available potassium (mg/kg)	全氮 Total nitrogen (g/kg)	碳氮比 C/N
0~20	0.2	103.73±28.97	95.19±18.89	21.27±4.25	131.13±6.84	3.27±0.82	18.63±2.00
	0.4	109.11±9.31	98.69±6.07	21.82±0.96	151.81±17.61	3.43±0.30	18.73±2.10
	0.6	193.99±27.11	110.57±39.40	24.73±4.67	143.08±15.04	5.66±0.85	19.76±0.85
	0.8	209.30±5.20	120.56±20.52	25.60±4.00	126.45±9.54	5.99±0.20	20.30±0.42
20-60	0.2	33.89±0.49	53.49±5.95	13.08±6.01	132.36±35.75	1.15±0.20	18.62±1.99
	0.4	33.91±10.76	39.65±12.43	9.62±0.83	117.97±12.21	1.23±0.27	18.71±2.10
	0.6	48.79±15.75	56.02±13.07	10.80±1.83	115.26±5.76	1.45±0.42	19.76±0.62
	0.8	38.51±13.48	39.31±15.46	21.11±5.09	137.76±14.87	1.14±0.36	20.65±0.33
P	郁闭度	0.390	0.950	0.425	0.688	0.516	0.548
	土层	0.000	0.000	0.002	0.009	0.000	0.367
	郁闭度×土层	0.000	0.035	0.052	0.268	0.000	0.877

Study on soil nutrient characteristics of Picea schrenkiana var. Tianschanica forest with different canopy densities

不同郁闭度天山云杉林土壤养分特征

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Figures/Tables 5

References 25

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	有机质 Organic matter (g/kg)	碱解氮 Alkaline nitrogen (mg/kg)	速效磷 Available phosp horus (mg/kg)	速效钾 Available potas sium (mg/kg)	全氮 Total nitrogen (g/kg)
有机质 Organic matter (g/kg)	1
碱解氮 Alkaline nitrogen (mg/kg)	0.852^**	1
速效磷 Available phosphorus (mg/kg)	0.623^**	0.628^**	1
速效钾 Available potassium (mg/kg)	0.314	0.275	0.413^**	1
全氮 Total nitrogen (g/kg)	0.984^**	0.823^**	0.664^**	0.346	1

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