Distribution and diversity of herbage under Caragana korshinskii plantation at hillslope scale in the semi-arid loess hilly region

doi:10.7522/j.issn.1000-694X.2020.00115

Journal of Desert Research ›› 2021, Vol. 41 ›› Issue (2): 120-128.DOI: 10.7522/j.issn.1000-694X.2020.00115

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Distribution and diversity of herbage under Caragana korshinskii plantation at hillslope scale in the semi-arid loess hilly region

Ziting Wang¹^,²(), Lei Yang³, Guang Li¹(), Chunshan Chai², Yangdong Zhang², Donghao Liu²

^1.College of Forestry，Gansu Agricultural University，Lanzhou 730070，China
^2.Gansu Academy of Forestry Science，Lanzhou 730020，China
^3.State Key Laboratory of Urban and Regional Ecology，Research Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China

Received:2020-07-06 Revised:2020-11-06 Online:2021-03-20 Published:2021-03-26
Contact: Guang Li

Abstract

Abstract:

Distributions and diversity of herb community were significantly influenced by the introduced shrub restoration. However， the recognition of responding mechanism by which the micro-landform modification and artificial shrub restoration influence the distribution and diversity of herbage at the hill slope scale is limited. In this study， we selected a typical artificial Caragana korshinskii shrub on the hill slope as a research model， and the data of composition of herbaceous community， herbaceous above-ground biomass， C. korshinskii growth， litter moisture content and soil moisture content were collected. The following results were obtained in this study. （1） the composition of herbaceous community was significant difference at different slope aspect. The species richness， dominance and diversity index of herbaceous community in shady slope were significant highly than in semi-sunny and sunny slope. On the contrary， there was no significant difference on the evenness index in different slope aspects. （2） Herbaceous above-ground biomass in different slope aspects was shady slope>semi-sunny slope>sunny slope， but there was not significant difference. Herbaceous above-ground biomass at upper and middle slope positions were significantly higher than at foot slope position in the shady slope aspect， and there was not significant difference between different slope positions in the semi-sunny and sunny slope aspect. （3） Slope aspect affected the hydro thermal conditions on hill slope， and then significantly influenced the diversity of herb community and explained 15.2% variation in herb community. （4） Shrub density of C. korshinski and slope aspect had a significant negative relationship with the species richness of herb community. Heteropappus altaicus and Stipa bungeana had a significant positive relationship with slope aspect， and they were mainly distributed at the shady slope. Artemisia capillaris and Leymus secalinus had a significant negative relationship with slope aspect， and they mainly distributed at the sunny slope. The slope aspect affected the hydro thermal conditions on hill slope， and then reflected the vegetation growth. And the effect of slope position on the growth of herbage can be weakened by the changes of micro topography. And the slope aspect and the shrub density of artificial vegetation determined the distribution pattern of the herbage.

Key words: semi-arid loess hilly region, slope aspect, slope position, Caragana korshinskii, herb community

CLC Number:

Q948.15

Ziting Wang, Lei Yang, Guang Li, Chunshan Chai, Yangdong Zhang, Donghao Liu. Distribution and diversity of herbage under Caragana korshinskii plantation at hillslope scale in the semi-arid loess hilly region[J]. Journal of Desert Research, 2021, 41(2): 120-128.

Figures/Tables 8

References 30

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样地		海拔/m	坡度/（°）	坡向/（°）	土壤容重/（g·cm^-3）
阴坡	上坡位	2 079	25°	291°	1.14±0.05
	中坡位	2 041	33°	264°	1.09±0.10
	下坡位	2 012	22°	282°	1.15±0.05
半阳坡	上坡位	2 106	34°	332°	1.23±0.04
	中坡位	2 061	30°	323°	1.10±0.04
	下坡位	2 017	28°	342°	1.08±0.01
阳坡	上坡位	2 068	33°	0°	1.15±0.02
	中坡位	2 043	30°	4°	1.14±0.06
	下坡位	2 003	27°	0°	1.15±0.02

样地		海拔/m	坡度/（°）	坡向/（°）	土壤容重/（g·cm^-3）
阴坡	上坡位	2 079	25°	291°	1.14±0.05
	中坡位	2 041	33°	264°	1.09±0.10
	下坡位	2 012	22°	282°	1.15±0.05
半阳坡	上坡位	2 106	34°	332°	1.23±0.04
	中坡位	2 061	30°	323°	1.10±0.04
	下坡位	2 017	28°	342°	1.08±0.01
阳坡	上坡位	2 068	33°	0°	1.15±0.02
	中坡位	2 043	30°	4°	1.14±0.06
	下坡位	2 003	27°	0°	1.15±0.02

物种	阴坡			半阳坡			阳坡
物种	上坡位	中坡位	下坡位	上坡位	中坡位	下坡位	上坡位	中坡位	下坡位
赖草(Leymus secalinus)	0.201±0.071	0.179±0.061	0.161±0.056	0.363±0.124	0.205±0.066	0.342±0.116			0.039±0.034
长芒草(Stipa bungeana)	0.126±0.050	0.033±0.029	0.266±0.003	0.155±0.068	0.210±0.048	0.201±0.107	0.296±0.059	0.336±0.034	0.134±0.054
中华隐子草(Cleistogenes chinensis)						0.006±0.005			0.020±0.018
狗尾草(Setaria viridis)				0.068±0.036	0.054±0.041	0.019±0.017	0.052±0.016	0.054±0.014	0.058±0.020
灰绿藜(Chenopodium glaucum)							0.020±0.018		0.012±0.010
大花蚓果芥(Torularia humilis)	0.002±0.002	0.024±0.012	0.033±0.013		0.030±0.003	0.045±0.016	0.034±0.017	0.022±0.019	0.032±0.016
二裂委陵菜(Potentilla bifurca)				0.041±0.016		0.021±0.018	0.053±0.027
西山委陵菜(Potentilla sischanensis)	0.004±0.003	0.010±0.006	0.021±0.012	0.004±0.003	0.014±0.005		0.023±0.013
伏毛山莓草(Sibbaldia adpressa)	0.041±0.020	0.057±0.020	0.028±0.020	0.011±0.006	0.059±0.010	0.052±0.021	0.054±0.029	0.080±0.029	0.098±0.032
糙叶黄耆(Astragalus scaberrimus)							0.013±0.011
甘肃棘豆(Oxytropis kansuensis)		0.021±0.012
天蓝苜蓿(Medicago lupulina)	0.069±0.047	0.003±0.003	0.018±0.015	0.010±0.009
野亚麻(Linum stelleroides)			0.005±0.004			0.019±0.010
骆驼蓬(Peganum harmala)	0.054±0.027	0.048±0.019		0.022±0.019	0.040±0.021		0.043±0.022		0.035±0.031
远志(Polygala tenuifolia)			0.031±0.018
裂叶堇菜(Viola dissecta)			0.029±0.009			0.010±0.008
早开堇菜(Viola prionantha)							0.003±0.003
北方獐牙菜(Swertia diluta)			0.021±0.018
鹅绒藤(Cynanchum chinense)	0.006±0.005
地梢瓜(Cynanchum thesioides)	0.029±0.025	0.014±0.012	0.019±0.016			0.029±0.025	0.017±0.015	0.056±0.029
田旋花(Convolvulus arvensis)								0.036±0.032
蒙古芯芭(Cymbaria mongolica)	0.009±0.008	0.005±0.005	0.019±0.010				0.022±0.019
角蒿(Incarvillea sinensis)						0.033±0.029		0.067±0.046
阿尔泰狗娃花(Heteropappus altaicus)	0.073±0.022	0.047±0.024	0.159±0.025	0.094±0.009	0.238±0.070	0.128±0.050	0.225±0.051	0.245±0.076	0.300±0.100
铁杆蒿(Artemisia sacrorum)	0.068±0.059	0.028±0.024		0.118±0.102	0.007±0.006	0.061±0.042			0.019±0.016
茵陈蒿(Artemisia capillaris)	0.248±0.050	0.343±0.108	0.067±0.034	0.112±0.057	0.012±0.010
冷蒿(Artemisia frigida)	0.061±0.036	0.0214±0.019	0.053±0.046		0.085±0.060			0.032±0.028	0.014±0.012
束伞亚菊(Ajania parviflora)	0.023±0.013	0.167±0.060			0.040±0.035	0.034±0.030	0.144±0.048	0.072±0.040	0.239±0.051
大蓟(Cirsium japonicum)			0.046±0.040
抱茎风毛菊(Saussurea chingiana)			0.001±0.001
苦荬菜(Ixeris polycephala)			0.020±0.010		0.006±0.005
小苦荬(Ixeridium dentatum)			0.005±0.004

物种	阴坡			半阳坡			阳坡
物种	上坡位	中坡位	下坡位	上坡位	中坡位	下坡位	上坡位	中坡位	下坡位
赖草(Leymus secalinus)	0.201±0.071	0.179±0.061	0.161±0.056	0.363±0.124	0.205±0.066	0.342±0.116			0.039±0.034
长芒草(Stipa bungeana)	0.126±0.050	0.033±0.029	0.266±0.003	0.155±0.068	0.210±0.048	0.201±0.107	0.296±0.059	0.336±0.034	0.134±0.054
中华隐子草(Cleistogenes chinensis)						0.006±0.005			0.020±0.018
狗尾草(Setaria viridis)				0.068±0.036	0.054±0.041	0.019±0.017	0.052±0.016	0.054±0.014	0.058±0.020
灰绿藜(Chenopodium glaucum)							0.020±0.018		0.012±0.010
大花蚓果芥(Torularia humilis)	0.002±0.002	0.024±0.012	0.033±0.013		0.030±0.003	0.045±0.016	0.034±0.017	0.022±0.019	0.032±0.016
二裂委陵菜(Potentilla bifurca)				0.041±0.016		0.021±0.018	0.053±0.027
西山委陵菜(Potentilla sischanensis)	0.004±0.003	0.010±0.006	0.021±0.012	0.004±0.003	0.014±0.005		0.023±0.013
伏毛山莓草(Sibbaldia adpressa)	0.041±0.020	0.057±0.020	0.028±0.020	0.011±0.006	0.059±0.010	0.052±0.021	0.054±0.029	0.080±0.029	0.098±0.032
糙叶黄耆(Astragalus scaberrimus)							0.013±0.011
甘肃棘豆(Oxytropis kansuensis)		0.021±0.012
天蓝苜蓿(Medicago lupulina)	0.069±0.047	0.003±0.003	0.018±0.015	0.010±0.009
野亚麻(Linum stelleroides)			0.005±0.004			0.019±0.010
骆驼蓬(Peganum harmala)	0.054±0.027	0.048±0.019		0.022±0.019	0.040±0.021		0.043±0.022		0.035±0.031
远志(Polygala tenuifolia)			0.031±0.018
裂叶堇菜(Viola dissecta)			0.029±0.009			0.010±0.008
早开堇菜(Viola prionantha)							0.003±0.003
北方獐牙菜(Swertia diluta)			0.021±0.018
鹅绒藤(Cynanchum chinense)	0.006±0.005
地梢瓜(Cynanchum thesioides)	0.029±0.025	0.014±0.012	0.019±0.016			0.029±0.025	0.017±0.015	0.056±0.029
田旋花(Convolvulus arvensis)								0.036±0.032
蒙古芯芭(Cymbaria mongolica)	0.009±0.008	0.005±0.005	0.019±0.010				0.022±0.019
角蒿(Incarvillea sinensis)						0.033±0.029		0.067±0.046
阿尔泰狗娃花(Heteropappus altaicus)	0.073±0.022	0.047±0.024	0.159±0.025	0.094±0.009	0.238±0.070	0.128±0.050	0.225±0.051	0.245±0.076	0.300±0.100
铁杆蒿(Artemisia sacrorum)	0.068±0.059	0.028±0.024		0.118±0.102	0.007±0.006	0.061±0.042			0.019±0.016
茵陈蒿(Artemisia capillaris)	0.248±0.050	0.343±0.108	0.067±0.034	0.112±0.057	0.012±0.010
冷蒿(Artemisia frigida)	0.061±0.036	0.0214±0.019	0.053±0.046		0.085±0.060			0.032±0.028	0.014±0.012
束伞亚菊(Ajania parviflora)	0.023±0.013	0.167±0.060			0.040±0.035	0.034±0.030	0.144±0.048	0.072±0.040	0.239±0.051
大蓟(Cirsium japonicum)			0.046±0.040
抱茎风毛菊(Saussurea chingiana)			0.001±0.001
苦荬菜(Ixeris polycephala)			0.020±0.010		0.006±0.005
小苦荬(Ixeridium dentatum)			0.005±0.004

指标	草本地上生物量	灌木密度	0—40 cm 土壤水分含量	40—200 cm 土壤水分含量
草本地上生物量	1	-0.355^n.s.	0.197^n.s.	0.433^n.s.
灌木密度		1	-0.034^*	0.130^n.s.
0—40 cm土壤水分含量			1	0.38^n.s.
40—200 cm土壤水分含量				1

Distribution and diversity of herbage under Caragana korshinskii plantation at hillslope scale in the semi-arid loess hilly region

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