Characteristics of understory herb communities across time during restoration in coal mine reclamation areas and their coupling with soil properties

doi:10.11686/cyxb2021151

Abstract

Abstract:

This research studied the understory herbaceous plant communities and associated soil factors over years 3-7 of a restoration process at Juxinlong Coal Mine， Ordos Basin， in order to understand the characteristics of understory herbaceous plant communities and their coupling with soil factors across time during the site restoration. Nearby managed grassland and abandoned grassland plots were used as controls. The species composition and soil physical and chemical properties of herbaceous communities in different plots were investigated， and the relationships between herbaceous plant communities and soil factors， and the response mechanisms were studied using the grey correlation coupling model. It was found that： 1） A total of 55 species of herbaceous plants were present in the study area， and 60% of the species present belonged to the families Poaceae， Asteraceae and Fabaceae. 2） With the passage of time during restoration， the number of understory herbaceous plants initially decreased and then increased， and gradually approached to the number of plant species in managed grassland. The Margalef index and Shannon-Wiener index of the studied plots also showed a trend of initial decrease and then increase， while the Pielou index and Simpson index did not change significantly over time. 3） The diversity of herbaceous plant communities in the study area was closely related to soil silt and gravel content， and to soil pH and bulk density. 4） The degree of coupling and correlation between herbaceous plant diversity and soil properties in the study area followed a pattern of “increase-decrease-increase” with the passage of time during the restoration. Among the collected data， the coupling between herbaceous plants and soil in the sample plots after seven years restoration was the highest （R=0.72）. In summary， the correlation between understory herbaceous plant diversity and soil properties in the studied plots exhibited gradual development， but after seven years has not yet reached its climax.

Key words: coal mine reclamation area, herbaceous plants, species diversity, gray relational coupling model

Rui GAO, Ning AI, Guang-quan LIU, Chang-hai LIU, Fang-fang QIANG. Characteristics of understory herb communities across time during restoration in coal mine reclamation areas and their coupling with soil properties[J]. Acta Prataculturae Sinica, 2022, 31(6): 61-68.

Figures/Tables 6

References 27

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样地编号 Sample number	样地类型 Plot type	修复年限 Restore year （yr）	海拔 Altitude （m）	株距×行距 Plant spacing （m）×row spacing （m）	基径 Base diameter （cm）	高度 Height （cm）	郁闭度 Canopy closure（%）
1	沙棘林Seabuckthorn forest	7	1360	2×2	3.0±0.11	157±3.37	55
2	沙棘林Seabuckthorn forest	6	1360	2×2	3.5±0.11	166±4.64	55
3	沙棘林Seabuckthorn forest	5	1370	2×2	3.7±0.13	183±4.04	60
4	沙棘林Seabuckthorn forest	4	1370	2×2	3.2±0.10	172±2.80	85
5	沙棘林Seabuckthorn forest	3	1340	2×2	3.2±0.13	138±2.62	40
6	撂荒地Abandoned land	7	1390	/	/	/	20
7	人工草地Artificial grassland	7	1390	/	/	/	65

样地编号 Sample number	样地类型 Plot type	修复年限 Restore year （yr）	海拔 Altitude （m）	株距×行距 Plant spacing （m）×row spacing （m）	基径 Base diameter （cm）	高度 Height （cm）	郁闭度 Canopy closure（%）
1	沙棘林Seabuckthorn forest	7	1360	2×2	3.0±0.11	157±3.37	55
2	沙棘林Seabuckthorn forest	6	1360	2×2	3.5±0.11	166±4.64	55
3	沙棘林Seabuckthorn forest	5	1370	2×2	3.7±0.13	183±4.04	60
4	沙棘林Seabuckthorn forest	4	1370	2×2	3.2±0.10	172±2.80	85
5	沙棘林Seabuckthorn forest	3	1340	2×2	3.2±0.13	138±2.62	40
6	撂荒地Abandoned land	7	1390	/	/	/	20
7	人工草地Artificial grassland	7	1390	/	/	/	65

修复年限 Restore year （yr）	物种数总数 Total number of plant species	重要值前五位 Top five importance values
7	26	狗尾草 Setaria viridis	黄花蒿 Artemisia annua	苦苣 Sonchus oleraceus	芦苇 Phragmites australis	芨芨草 A. splendens
7	26	0.2187	0.1003	0.0821	0.0645	0.0610
6	23	黄花蒿 A. annua	鹅绒藤 Cynanchum chinense	苦苣 S. oleraceus	芨芨草 A. splendens	刺儿菜 Cirsium setosum
6	23	0.1476	0.1335	0.1234	0.0721	0.0454
5	13	黄花蒿 A. annua	狗尾草 S. viridis	羊茅草 Festuca	稗草 Echinochloa crusgalli	芦苇 P. australis
5	13	0.1280	0.1204	0.1093	0.0985	0.0978
4	15	黄花蒿 A. annua	稗草 E. crusgalli	油蒿 Artemisia ordosica	角蒿 Incarvillea sinensis	大籽蒿 Artemisia sieversiana
4	15	0.1903	0.1484	0.1171	0.0867	0.0821
3	20	芨芨草 A. splendens	稗草 E. crusgalli	羊草 Leymus chinensis	猪毛蒿 Artemisia scoparia	拂子茅 Calamagrostis epigeios
3	20	0.1135	0.0966	0.0952	0.0883	0.0811
撂荒地 Abandoned land	28	大籽蒿 A. sieversiana	芨芨草 A. splendens	铁杆蒿 Artemisia sacrorum	鹅绒藤 C. chinense	茵陈蒿 Artemisia capillaris
撂荒地 Abandoned land	28	0.1035	0.0816	0.0787	0.0787	0.0612
人工草地 Artificial grassland	32	芨芨草 A. splendens	鹅绒藤 C. chinense	芦苇 P. australis	大籽蒿 A. sieversiana	细叶葱 Allium tenuissimum
人工草地 Artificial grassland	32	0.1107	0.0794	0.0768	0.0729	0.0677

修复年限 Restore year （yr）	物种数总数 Total number of plant species	重要值前五位 Top five importance values
7	26	狗尾草 Setaria viridis	黄花蒿 Artemisia annua	苦苣 Sonchus oleraceus	芦苇 Phragmites australis	芨芨草 A. splendens
7	26	0.2187	0.1003	0.0821	0.0645	0.0610
6	23	黄花蒿 A. annua	鹅绒藤 Cynanchum chinense	苦苣 S. oleraceus	芨芨草 A. splendens	刺儿菜 Cirsium setosum
6	23	0.1476	0.1335	0.1234	0.0721	0.0454
5	13	黄花蒿 A. annua	狗尾草 S. viridis	羊茅草 Festuca	稗草 Echinochloa crusgalli	芦苇 P. australis
5	13	0.1280	0.1204	0.1093	0.0985	0.0978
4	15	黄花蒿 A. annua	稗草 E. crusgalli	油蒿 Artemisia ordosica	角蒿 Incarvillea sinensis	大籽蒿 Artemisia sieversiana
4	15	0.1903	0.1484	0.1171	0.0867	0.0821
3	20	芨芨草 A. splendens	稗草 E. crusgalli	羊草 Leymus chinensis	猪毛蒿 Artemisia scoparia	拂子茅 Calamagrostis epigeios
3	20	0.1135	0.0966	0.0952	0.0883	0.0811
撂荒地 Abandoned land	28	大籽蒿 A. sieversiana	芨芨草 A. splendens	铁杆蒿 Artemisia sacrorum	鹅绒藤 C. chinense	茵陈蒿 Artemisia capillaris
撂荒地 Abandoned land	28	0.1035	0.0816	0.0787	0.0787	0.0612
人工草地 Artificial grassland	32	芨芨草 A. splendens	鹅绒藤 C. chinense	芦苇 P. australis	大籽蒿 A. sieversiana	细叶葱 Allium tenuissimum
人工草地 Artificial grassland	32	0.1107	0.0794	0.0768	0.0729	0.0677

土壤因子 Soil factor	Margalef指数 Margalef index	Pielou指数 Pielou index	Simpson指数 Simpson index	Shannon-Wiener指数 Shannon-Wiener index
黏粒Clay	0.69	0.64	0.50	0.61
粉粒Silt	0.78	0.59	0.67	0.64
砂粒Sand	0.61	0.58	0.71	0.68
土壤水分Soil moisture	0.75	0.56	0.70	0.69
土壤容重Soil bulk density	0.67	0.66	0.62	0.84
饱和含水量Saturation moisture content	0.62	0.65	0.56	0.58
毛管持水量Capillary capacity	0.68	0.64	0.64	0.67
总孔隙度Total porosity	0.61	0.67	0.54	0.56
pH值pH value	0.58	0.75	0.57	0.54
电导率Electric conductivity	0.68	0.56	0.70	0.72
有机质Organic matter	0.62	0.62	0.70	0.78
速效磷Available phosphorus	0.72	0.68	0.64	0.64
全磷Total phosphorus	0.63	0.53	0.64	0.73
速效钾Available potassium	0.68	0.61	0.69	0.59
速效氮Available nitrogen	0.65	0.74	0.50	0.62