Effects of photovoltaic power station construction on plant community and soil characteristics

doi:10.11686/cyxb2024117

Abstract

Abstract:

This research investigated the impact of photovoltaic （PV） power station construction on vegetation and soil in a desert steppe. Two PV power stations in Ningxia with a post-construction vegetation recovery time of one and two years were selected for study and data were collected for three categories of site： between PV panels （BJ）， under PV panels （BX）， and outside the PV power station （control， CK）. Vegetation surveys were conducted and soil sampling carried out， and the plant community characteristics of soil physical and chemical properties were compared under the different treatments and their relationships analysed. The results revealed that the vegetation cover， aboveground biomass and diversity index were the highest in the CK plot after one year of vegetation restoration. The contents of soil organic matter （SOM）， soil total phosphorus and potassium （TP and TK） and soil available phosphorus （AP） in the photovoltaic power station area were significantly higher than those in the control area outside the photovoltaic power station. After 2 years of vegetation restoration， plant community species diversity indices， TK， available nitrogen （AN） and AP were significantly higher for both BJ and BX sites than for CK site. Plant community cover and aboveground biomass were positively correlated with pH， and negatively correlated with electrical conductivity （EC）， SOM and AN. Shannon-Wiener index was positively correlated with EC， SOM and AN. Soil pH and SOM content are the most important factors affecting the characteristics of plant communities in this study. The results show that the construction of a photovoltaic power station has a negative impact on the vegetation community and soil physical and chemical characteristics， but that subsequently there is at least partial recovery from the ecological damage resulting from power station construction.

Key words: photovoltaic panel, plant community characteristics, soil physical and chemical properties, desert steppe of Ningxia

Ping-an BAO, Bo JI, Guo SUN, Na ZHANG, Xu-dong WU, Jian-long HE, Zhan-jun WANG, Ying TIAN. Effects of photovoltaic power station construction on plant community and soil characteristics[J]. Acta Prataculturae Sinica, 2024, 33(12): 23-33.

Figures/Tables 7

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科 Family	种 Species	国能宁东GNND			盐池中能YCZN
科 Family	种 Species	BJ	BX	CK	BJ	BX	CK
禾本科Gramineae	画眉草E. pilosa	18.77	34.50	15.06	5.72	-	6.93
	冠芒草E. borealis	11.04	33.69	13.73	-	-	-
	锋芒草T. mongolorum	4.56	2.54	7.70	-	-	-
	狗尾草S. viridis	23.71	9.49	15.73	3.09	7.62	7.46
	糙隐子草C. squarrosa	-	-	6.50	1.77	2.83	0.99
	短花针茅Stipa breviflora	-	-	-	3.71	4.19	-
	白草Pennisetum flaccidum	-	-	-	21.31	5.71	7.70
	赖草Leymus secalinus	-	-	-	9.72	1.51	-
豆科Fabaceae	狭叶米口袋Gueldenstaedtia stenophylla	-	3.30	10.80	-	0.47	-
	牛枝子Lespedeza potanini	-	-	0.89	1.89	4.10	-
	苦豆子Sophora alopecuroides	-	-	-	2.95	10.53	6.93
菊科Asteraceae	猪毛蒿A. scoparia	27.20	2.31	5.71	4.94	0.78	7.69
藜科Chenopodiaceae	猪毛菜K. collinum	2.69	7.80	-	10.30	15.77	31.53
	虫实Corispermum hyssopifolium	-	-	1.95	7.27	4.54	-
	沙米Agriophyllum squarrosum	-	-	-	-	10.56	-
苋科Amaranthaceae	雾冰藜Grubovia dasyphylla	6.21	-	1.64	4.54	11.78	15.36
苋科Amaranthaceae	灰绿藜Oxybasis glauca	-	-	1.97	8.35	0.86	9.09
远志科Polygalaceae	远志Polygala tenuifolia	-	-	1.37	2.37	0.55	-

科 Family	种 Species	国能宁东GNND			盐池中能YCZN
科 Family	种 Species	BJ	BX	CK	BJ	BX	CK
禾本科Gramineae	画眉草E. pilosa	18.77	34.50	15.06	5.72	-	6.93
	冠芒草E. borealis	11.04	33.69	13.73	-	-	-
	锋芒草T. mongolorum	4.56	2.54	7.70	-	-	-
	狗尾草S. viridis	23.71	9.49	15.73	3.09	7.62	7.46
	糙隐子草C. squarrosa	-	-	6.50	1.77	2.83	0.99
	短花针茅Stipa breviflora	-	-	-	3.71	4.19	-
	白草Pennisetum flaccidum	-	-	-	21.31	5.71	7.70
	赖草Leymus secalinus	-	-	-	9.72	1.51	-
豆科Fabaceae	狭叶米口袋Gueldenstaedtia stenophylla	-	3.30	10.80	-	0.47	-
	牛枝子Lespedeza potanini	-	-	0.89	1.89	4.10	-
	苦豆子Sophora alopecuroides	-	-	-	2.95	10.53	6.93
菊科Asteraceae	猪毛蒿A. scoparia	27.20	2.31	5.71	4.94	0.78	7.69
藜科Chenopodiaceae	猪毛菜K. collinum	2.69	7.80	-	10.30	15.77	31.53
	虫实Corispermum hyssopifolium	-	-	1.95	7.27	4.54	-
	沙米Agriophyllum squarrosum	-	-	-	-	10.56	-
苋科Amaranthaceae	雾冰藜Grubovia dasyphylla	6.21	-	1.64	4.54	11.78	15.36
苋科Amaranthaceae	灰绿藜Oxybasis glauca	-	-	1.97	8.35	0.86	9.09
远志科Polygalaceae	远志Polygala tenuifolia	-	-	1.37	2.37	0.55	-

土壤因子 Soil factor	国能宁东GNND			盐池中能YCZN
土壤因子 Soil factor	板间BJ	板下BX	对照CK	板间BJ	板下BX	对照CK
pH	8.26±0.03b	8.44±0.01a	8.45±0.01a	8.35±0.01b	8.31±0.01c	8.38±0.01a
电导率Electrical conductivity （dS·m^-1）	0.11±0.001a	0.06±0.001b	0.06±0.001b	0.07±0.001b	0.10±0.001a	0.06±0.001c
有机质Organic matter （g·kg^-1）	4.91±0.15a	2.59±0.06b	2.08±0.03c	1.26±0.02c	3.69±0.06a	1.64±0.03b
全氮Total nitrogen （g·kg^-1）	0.49±0.09a	0.28±0.02b	0.30±0.03b	0.15±0.00b	0.23±0.02b	0.38±0.04a
全磷Total phosphorus （g·kg^-1）	0.51±0.01a	0.52±0.01a	0.38±0.01b	0.36±0.00a	0.36±0.00a	0.38±0.02a
全钾Total potassium （g·kg^-1）	14.51±0.21a	14.55±0.04a	13.82±0.10b	14.86±0.05a	14.30±0.12b	13.51±0.06c
碱解氮Available nitrogen （mg·kg^-1）	47.12±4.36a	21.00±2.01b	21.43±4.91b	10.70±0.00b	18.55±0.02a	8.66±1.25b
有效磷Available phosphorus （mg·kg^-1）	8.09±1.88a	7.96±0.73a	4.43±0.45b	6.91±0.93a	4.35±0.47b	7.35±1.12a
速效钾Available potassium （mg·kg^-1）	85.13±1.77a	66.37±0.88b	84.58±1.35a	130.19±0.80a	105.63±0.48b	57.95±0.52c

土壤因子 Soil factor	国能宁东GNND			盐池中能YCZN
土壤因子 Soil factor	板间BJ	板下BX	对照CK	板间BJ	板下BX	对照CK
pH	8.26±0.03b	8.44±0.01a	8.45±0.01a	8.35±0.01b	8.31±0.01c	8.38±0.01a
电导率Electrical conductivity （dS·m^-1）	0.11±0.001a	0.06±0.001b	0.06±0.001b	0.07±0.001b	0.10±0.001a	0.06±0.001c
有机质Organic matter （g·kg^-1）	4.91±0.15a	2.59±0.06b	2.08±0.03c	1.26±0.02c	3.69±0.06a	1.64±0.03b
全氮Total nitrogen （g·kg^-1）	0.49±0.09a	0.28±0.02b	0.30±0.03b	0.15±0.00b	0.23±0.02b	0.38±0.04a
全磷Total phosphorus （g·kg^-1）	0.51±0.01a	0.52±0.01a	0.38±0.01b	0.36±0.00a	0.36±0.00a	0.38±0.02a
全钾Total potassium （g·kg^-1）	14.51±0.21a	14.55±0.04a	13.82±0.10b	14.86±0.05a	14.30±0.12b	13.51±0.06c
碱解氮Available nitrogen （mg·kg^-1）	47.12±4.36a	21.00±2.01b	21.43±4.91b	10.70±0.00b	18.55±0.02a	8.66±1.25b
有效磷Available phosphorus （mg·kg^-1）	8.09±1.88a	7.96±0.73a	4.43±0.45b	6.91±0.93a	4.35±0.47b	7.35±1.12a
速效钾Available potassium （mg·kg^-1）	85.13±1.77a	66.37±0.88b	84.58±1.35a	130.19±0.80a	105.63±0.48b	57.95±0.52c

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