城市绿化带植被覆盖度对盐碱地土壤盐分的调节

doi:10.7525/j.issn.1673-5102.2022.01.007

植物研究 ›› 2022, Vol. 42 ›› Issue (1): 62-70.doi: 10.7525/j.issn.1673-5102.2022.01.007

城市绿化带植被覆盖度对盐碱地土壤盐分的调节

彭晓莉¹^,³, 吴旺泽²(), 沈娟², 成宏斌², 贺江涛²

^1.甘肃公航旅建设集团有限公司，兰州 730000
^2.西北师范大学生命科学学院，兰州 730070
^3.兰州新区市政投资管理集团有限公司，兰州 730300

收稿日期:2020-08-14 出版日期:2022-01-20 发布日期:2021-12-30
通讯作者: 吴旺泽 E-mail:wangzew78@sina.cn
作者简介:彭晓莉（1977—），女，博士，高级工程师，主要研究方向为城市生态系统及景观园艺。
基金资助:
国家自然科学基金(31860113);校企合作项目(50090033);西北师范大学青年教师科研能力提升计划(NWNU-LKQN-16-12)

Regulation of Soil Salinity by Vegetation Coverage in Urban Greenbelt Saline-alkali Land

Xiaoli Peng¹^,³, Wangze Wu²(), Juan Shen², Hongbin Cheng², Jiangtao He²

^1.Gansu HATG Construction Group Co. Ltd. ，Lanzhou 730000
^2.College of Life Sciences，Northwest Normal University，Lanzhou 730070
^3.Lanzhou New Area Municipal Investment Group Co. ，Ltd，Lanzhou 730300

Received:2020-08-14 Online:2022-01-20 Published:2021-12-30
Contact: Wangze Wu E-mail:wangzew78@sina.cn
About author:PENG Xiao-Li（1977—），female，Ph.D，senior engineer，interested in urban ecology and Landscape gardening.
Supported by:
National Natural Science Foundation of China(31860113┫：School-enterprise Cooperation Projects┣50090033);Young Teachers’ Scientific Research Capacity Enhancement Program of NWNU(NWNU-LKQN-16-12)

摘要/Abstract

摘要：

城市绿化带土壤盐渍化成为近年来城镇化发展亟待解决的环境问题，本试验系统研究兰州新区城市绿化带植被覆盖度和不同肥力措施对盐碱地盐分的调节。结果表明“七叶树（Aesculus chinensis Bunge）+花叶楸（Catalpa bungei C.）+四季玫瑰（Rosa rugosa Thunb.）”的景观组合Ⅱ，在有机肥添加微生物菌剂的处理下，一个生长季平均植被覆盖度高达70.06%，表土脱盐率能达到53.51%，而“裸地”对照仅分别为20.62%和5.46%。景观组合Ⅱ处理pH值和电导率分别下降了12.54%和63.83%，“裸地”仅下降了3.14%和12.28%。相关性分析（P<0.05）表明，植被覆盖度与土壤含盐量（r=-0.949）高度负相关，与土壤有机质（r=0.887）和全氮（r=0.853）高度正相关。本研究认为，通过增加绿化带植被覆盖度、改善土壤肥力能有效改良盐碱地土壤盐分。

关键词: 植被覆盖度, 城市绿化带, 土壤盐渍化, 景观组合, 脱盐率

Abstract:

Soil salinization was a global problem， which not only seriously affected agricultural production， and also greatly threatened landscape and urban planning projects. In present study， different landscape combinations and fertility measures were used to investigate the adjustable mechanism of the vegetation coverage to the urban green belt saline-alkali soil in the Lanzhou New District. The results showed that “Aesculus chinensis Bunge + Catalpa bungei C. + Rosa rugosa Thunb.” landscape combination Ⅱ， treated with organic fertilizer and microbial inoculants，the average vegetation coverage reached to 70.06% during a growth season. And the topsoil desalination rate could reach to 53.51%， while the "bare land" was only 20.62% and 5.46% respectively. The pH value and electrical conductivity of the landscape combination Ⅱ decreased by 12.54% and 63.83%， respectively， while the “bare land” only decreased by 3.14% and 12.28%. Correlation analysis（P<0.05） shown that vegetation coverage was highly negatively correlated with soil salinity（r= -0.949）， but highly positively correlated with soil organic matter（r=0.887） and with total nitrogen（r=0.853） respectively. These results indicated that can effectively improve the salt content of saline-alkali soil in the Lanzhou New District， by increasing the vegetation coverage of the green belt and improving soil fertility.

Key words: vegetation coverage, urban green belt, soil salinization, landscape combinations, desalination rate

中图分类号:

S731.2

彭晓莉, 吴旺泽, 沈娟, 成宏斌, 贺江涛. 城市绿化带植被覆盖度对盐碱地土壤盐分的调节[J]. 植物研究, 2022, 42(1): 62-70.

Xiaoli Peng, Wangze Wu, Juan Shen, Hongbin Cheng, Jiangtao He. Regulation of Soil Salinity by Vegetation Coverage in Urban Greenbelt Saline-alkali Land[J]. Bulletin of Botanical Research, 2022, 42(1): 62-70.

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样地 Sample sites	土层 Soil depths /cm	含盐量 Salinity content /（g·kg^-1）	pH值 pH value	电导率 Electrical conductivity /（ms·cm^-1）	有机质 Organic matter /（g·kg^-1）	全氮 Total N /（g·kg^-1）	全磷 Total P /（g·kg^-1）	全钾 Total K /（g·kg^-1）
1#	0~10	6.53d	8.15d	0.49b	7.63a	0.58a	0.57bc	23.72a
	10~30	5.94g	8.03e	0.29gh	4.14d	0.57a	0.63a	23.72a
	30~50	5.79f	7.92f	0.31fg	2.52g	0.23d	0.47c	21.71c
2#	0~10	6.89c	8.36b	0.45c	5.04c	0.33b	0.44d	22.71b
	10~30	6.23e	8.17d	0.39e	5.43b	0.33b	0.55b	23.73a
	30~50	6.13e	7.85g	0.27h	3.22e	0.30c	0.39e	21.24c
3#	0~10	7.22a	8.52a	0.52a	2.81fg	0.20e	0.33fg	20.72d
	10~30	7.12b	8.23c	0.39e	2.24h	0.21de	0.47c	19.72e
	30~50	7.32a	8.02ef	0.41d	1.51i	0.12f	0.31g	19.73e

景观组合 Landscape groups	施肥方式 Fertilization patterns	5月 May	6月 June	7月 July	8月 August	9月 September	10月 October	平均植被覆盖度 Average vegetation coverage /%
五角枫+花叶楸+鲁冰花 A. mono Maxim.+C. bungei+ L. polyphyllus Lindl.	CK	18.46eE	28.56eD	34.45fC	51.68fB	55.35fA	18.35fE	34.48f
	YFS	22.34cF	35.89dD	42.38dC	68.46dA	61.78dB	26.47dE	42.89d
	YF	20.45dE	30.56eD	38.47eC	62.56eA	58.47eB	22.58eE	38.85e
七叶树+花叶楸+四季玫瑰 A. chinensis Bunge+ S. bungei+R. rugosa Thunb.	CK	31.24bF	45.56cE	57.85cC	75.87cA	74.45cB	42.56cD	54.59c
	YFS	36.46aF	62.73aE	78.45aC	92.67aA	88.58aB	67.45aD	70.06a
	YF	32.46bD	52.45bC	68.43bB	82.48bA	82.67bA	55.36bC	61.98b
裸地 Bare land	CK	4.57gE	8.24fD	14.35iC	25.86iA	20.15iB	9.38iD	13.76i
	YFS	6.89fE	8.36fE	25.86gC	36.32gA	28.78gB	17.48gD	20.62g
	YF	5.87fF	8.26fE	22.43hC	38.46hA	25.43hB	12.43hD	18.81h

景观组合 Landscape group	施肥方式 Fertilization patterns	1~10 cm			10~30 cm			30~50 cm
景观组合 Landscape group	施肥方式 Fertilization patterns	处理前 Before treatment /（g·kg^-1）	处理后 After treatment /（g·kg^-1）	脱盐率 Desalination rate /%	处理前 Before treatment /（g·kg^-1）	处理后 After treatment /（g·kg^-1）	脱盐率 Desalination rate /%	处理前 Before treatment /（g·kg^-1）	处理后 After treatment /（g·kg^-1）	脱盐率 Desalination rate /%
五角枫+花叶楸+鲁冰花 A. mono Maxim.+C. bungei+L. polyphyllus Lindl.	CK	6.53g	5.62d	13.94	5.94c	5.28cd	11.11	5.79de	5.62c	3.00
	YFS	6.64f	5.02f	24.40	5.89c	4.82e	18.17	5.72e	5.26d	8.02
	YF	6.55f	5.42e	17.25	6.02c	5.26de	12.62	5.90cd	5.56cd	5.79
七叶树+花叶楸+四季玫瑰 A. chinensis Bunge+ S. bungei+R. rugosa Thunb.	CK	6.89d	4.75g	31.06	6.23b	5.05e	18.94	6.13bc	5.69c	7.18
	YFS	6.84e	3.18i	53.51	6.32b	4.41g	30.22	6.02c	5.05e	16.11
	YF	6.83e	3.85h	43.63	6.28b	4.46f	25.80	6.18b	5.38d	12.94
裸地 Bare land	CK	7.22b	7.42a	-2.77	7.12a	7.01a	1.54	7.32a	7.44b	-1.64
	YFS	7.34b	6.94c	5.46	7.14a	6.85b	4.06	7.35a	7.41b	-0.82
	YF	7.37a	7.12b	3.39	7.20a	7.05a	2.08	7.44a	7.52a	-1.08

	平均覆盖度 Average vegetation	含盐量 Salinity content	pH值 pH value	电导率 Electrical conductivity	有机质 Organic matter	全氮 Total N	全磷 Total P	全钾 Total K
平均覆盖度 Average vegetation	1	-0.949^**	-0.717^*	-0.536	0.887^**	0.853^**	0.472	0.642^*
含盐量 Salinity content		1	0.593^*	0.420	-0.740^*	-0.836^**	-0.366	-0.501
pH值 pH value			1	0.876^**	-0.748^*	-0.754^*	-0.840^**	-0.758^*
电导率 Electrical conductivity				1	-0.463	-0.632^*	-0.829^**	-0.768^*
有机质 Organic matter					1	0.769^*	0.492	0.630^*
全氮 Total N						1	0.552	0.732^*
全磷 Total P							1	0.416
全钾 Total K								1

城市绿化带植被覆盖度对盐碱地土壤盐分的调节

Regulation of Soil Salinity by Vegetation Coverage in Urban Greenbelt Saline-alkali Land

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