Vegetation diversity and its relationship with soil physical and chemical properties in Hedong Sandy Land， Ningxia

doi:10.7522/j.issn.1000-694X.2024.00027

Journal of Desert Research ›› 2024, Vol. 44 ›› Issue (4): 202-211.DOI: 10.7522/j.issn.1000-694X.2024.00027

Vegetation diversity and its relationship with soil physical and chemical properties in Hedong Sandy Land， Ningxia

Shuai Wang¹^,²(), Dengke Ma¹, Zhibin He¹(), Weihao Sun¹^,², Jun Du¹, Rui Li¹, Wen Wang¹^,², Shuping Yang¹^,², Shuxuan Zhao¹^,²

^1.Linze Inland River Basin Research Station，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^2.University of Chinese Academy of Sciences，Beijing 100049，China

Received:2024-01-10 Revised:2024-03-06 Online:2024-07-20 Published:2024-08-29
Contact: Zhibin He

Abstract

Abstract:

Clarifying the relationship between vegetation diversity and soil physical and chemical properties is the premise for vegetation protection and desertification control in sandy land. Vegetation community characteristic， soil physical and chemical properties and their relationship were studied in the typical area of Hedong Sandy Land in Ningxia. The results showed that there were 41 species， which belongs to 34 genera， 15 families. There were 29 genera only have one species and 11 families only have one genus. Herbaceous plants accounted for an absolute advantage， with a total of 36 species， accounting for 87.80 %. Only 5 shrubs were recorded and no tree distributed in the study area. The species diversity indices （0.60-1.07） and the evenness indices （0.46-0.68） are both low， while the predominant indices （0.46-0.68） were relatively high， which reflected that the vegetation composition in the studied area was simple and the dominant species have significant impacts on the community characteristics. The soil in this area was mainly alkaline soil， with some area been strongly alkaline soil， but the soil has a low salt content. The soil organic matter content （1.68-2.80 g·kg^-1） and total nitrogen content （0.12-0.20 g·kg^-1） were equivalent to those in Horqin Sandy Land and Maowusu Sandy Land， but the available phosphorus content （0.41-1.85 mg·kg^-1） had an order of magnitude difference with Horqin. Which indicates that there might have been phosphorus limitation on formation and distribution of vegetation in Hedong Sandy Land. Redundancy analysis （RDA） was applied， and the results showed that soil properties could effectively explain the vegetation community characteristics in Ningdong Sandy Land. The interpretation rate of the first sorting axis reached 75.87%， with a total interpretation rate of 49.20% for total nitrogen， organic matter， and C∶N of surface soil. This showed that surface soil organic matter and nitrogen had important impacts on vegetation formation and distribution in the Hedong Sandy Land. By further analysis， it was found that vegetation coverage has extremely significant negative correlation with surface soil water content and also has significant negative correlation with soil nutrients. The vegetation height has significant negative correlation with surface soil organic matter and total nitrogen content. There was a negative correlation between species richness and species diversity indices and soil nutrients in Hedong Sandy Land.

Key words: Hedong Sandy Land, community characteristics, species diversity, soil nutrients, Redundancy analysis（RDA）

CLC Number:

Q948

Shuai Wang, Dengke Ma, Zhibin He, Weihao Sun, Jun Du, Rui Li, Wen Wang, Shuping Yang, Shuxuan Zhao. Vegetation diversity and its relationship with soil physical and chemical properties in Hedong Sandy Land， Ningxia[J]. Journal of Desert Research, 2024, 44(4): 202-211.

Figures/Tables 8

References 46

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样地编号	优势种	盖度 /%	平均高度 /cm	Patrick 丰富度指数	Shannon- Wiener 多样性指数	Simpson 优势度指数	Pielou 均匀度指数
1	软毛虫实（Corispermum puberulum）、雾冰藜（Grubovia dasyphylla）	35	28.72	18	0.82	0.56	0.54
2	软毛虫实（Corispermumpuberulum）、沙蓬(Agriophyllum squarrosum)	25	37.41	10	0.90	0.55	0.58
3	猪毛菜（Salsola collina）	75	20.94	8	0.93	0.53	0.56
4	猪毛菜（Salsola collina）、软毛虫实（Corispermumpuberulum）	75	41.32	14	1.03	0.49	0.61
5	狗尾草（Setaria viridis）	45	18.10	14	0.60	0.68	0.46
6	黑沙蒿(Artemisia ordosica）、猪毛菜（Salsola collina）	65	26.54	11	1.07	0.46	0.63
7	雾冰藜（Grubovia dasyphylla）、狗尾草（Setaria viridis）	70	33.31	16	0.71	0.59	0.52

样地编号	优势种	盖度 /%	平均高度 /cm	Patrick 丰富度指数	Shannon- Wiener 多样性指数	Simpson 优势度指数	Pielou 均匀度指数
1	软毛虫实（Corispermum puberulum）、雾冰藜（Grubovia dasyphylla）	35	28.72	18	0.82	0.56	0.54
2	软毛虫实（Corispermumpuberulum）、沙蓬(Agriophyllum squarrosum)	25	37.41	10	0.90	0.55	0.58
3	猪毛菜（Salsola collina）	75	20.94	8	0.93	0.53	0.56
4	猪毛菜（Salsola collina）、软毛虫实（Corispermumpuberulum）	75	41.32	14	1.03	0.49	0.61
5	狗尾草（Setaria viridis）	45	18.10	14	0.60	0.68	0.46
6	黑沙蒿(Artemisia ordosica）、猪毛菜（Salsola collina）	65	26.54	11	1.07	0.46	0.63
7	雾冰藜（Grubovia dasyphylla）、狗尾草（Setaria viridis）	70	33.31	16	0.71	0.59	0.52

	C	H	R	H'	λ	J_sw
C	1.000
H	0.307	1.000
R	0.089	0.137	1.000
H'	0.137	-0.001	0.602^**	1.000
λ	-0.139	0.071	-0.421^*	-0.964^**	1.000
J_sw	0.133	-0.095	0.084	0.831^**	-0.921^**	1.000

	C	H	R	H'	λ	J_sw
C	1.000
H	0.307	1.000
R	0.089	0.137	1.000
H'	0.137	-0.001	0.602^**	1.000
λ	-0.139	0.071	-0.421^*	-0.964^**	1.000
J_sw	0.133	-0.095	0.084	0.831^**	-0.921^**	1.000

样地编号	土壤深度/cm	SWC/%	pH	EC/(μS·cm^-1)	SOM/(g·kg^-1)	TN/(g·kg^-1)	AP/(mg·kg^-1)
1	0~20	10.10±1.23^a	8.69±0.07^b	45.51±8.39^abc	1.85±0.38^b	0.12±0.02^b	0.89±0.28^bc
	20~40	4.86±1.44^ab	8.67±0.11^b	42.52±7.82^cd	1.91±0.39^bc	0.14±0.04^bc	0.79±0.17^ab
2	0~20	8.53±2.23^ab	9.12±0.21^a	55.86±12.28^a	1.74±0.59^b	0.13±0.05^ab	0.95±0.13^bc
	20~40	4.53±1.18^ab	9.32±0.17^a	68.79±12.12^a	1.82±0.14^bc	0.12±0.01^bc	0.98±0.24^ab
3	0~20	3.80±0.80^c	8.69±0.11^b	65.95±9.35^a	2.86±0.27^ab	0.18±0.02^ab	0.80±0.20^bc
	20~40	3.15±0.45^b	8.63±0.04^b	70.25±8.55^a	2.65±0.08^ab	0.20±0.01^ab	0.55±0.10^ab
4	0~20	5.50±2.42^c	8.75±0.05^b	38.70±2.86^c	1.91±0.14^b	0.13±0.01^ab	0.75±0.05^bc
	20~40	6.57±1.26^a	8.74±0.02^b	36.20±0.22^d	1.68±0.26^c	0.11±0.02^c	0.61±0.05^b
5	0~20	6.85±0.81^bc	8.69±0.06^b	55.48±6.31^ab	2.80±0.45^a	0.19±0.03^a	1.51±1.07^ab
	20~40	5.00±1.53^ab	8.66±0.06^b	65.73±13.06^ab	2.38±0.30^ab	0.17±0.02^ab	0.87±0.46^ab
6	0~20	6.37±0.34^c	8.78±0.05^b	41.00±4.62^bc	2.06±0.40^ab	0.15±0.02^ab	0.42±0.12^c
	20~40	4.87±2.13^ab	8.74±0.04^b	39.63±2.42^cd	1.95±0.62^bc	0.14±0.04^bc	0.41±0.22^b
7	0~20	9.85±0.66^a	8.78±0.10^b	53.82±9.31^ab	2.47±0.65^ab	0.17±0.05^ab	1.85±0.36^a
	20~40	3.40±0.92^b	8.66±0.27^b	54.22±9.49^bc	2.67±0.43^a	0.20±0.04^a	1.25±0.43^a

Vegetation diversity and its relationship with soil physical and chemical properties in Hedong Sandy Land， Ningxia

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	C	H	R	H'	λ	J_sw
SWC-A	-0.442^*	0.031	-0.044	-0.147	0.174	-0.214
pH-A	-0.271	0.283	0.081	-0.181	0.261	-0.306
EC-A	0.024	-0.220	-0.258	-0.110	0.061	0.021
SOM-A	0.086	-0.434^**	-0.361^*	-0.133	0.059	0.064
TN-A	-0.008	-0.473^**	-0.322	-0.148	0.085	0.021
AP-A	0.364^*	0.159	-0.318	-0.366^*	0.339^*	-0.235
C/N-A	0.386^*	0.110	-0.307	-0.022	-0.053	0.163
SWC-B	0.074	0.239	0.090	0.042	-0.030	-0.036
pH-B	-0.222	0.302	0.223	0.016	0.089	-0.178
EC-B	-0.173	-0.160	0.085	-0.075	0.130	-0.171
SOM-B	0.315	-0.258	-0.021	-0.023	0.002	0.009
TN-B	0.345^*	-0.210	-0.003	-0.022	0.001	0.017
AP-B	0.172	0.211	-0.123	-0.332^*	0.351^*	-0.269
C/N-B	-0.199	-0.040	-0.016	0.063	-0.058	0.015

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