Effects of different vegetation restoration measures on soil physical properties in Hulun Buir Sandy Land

doi:10.13466/j.cnki.lczyyj.2025.03.006

Abstract

Abstract:

In order to find out the effect of different plant restoration measures in Hulun Buir Sandy Land,grasp the difference of soil physical properties in different plant management areas,and provide reasonable suggestions for practical technology of sand management,five plant restoration measures of Corethrodendron fruticosum(UH),Caragana korshinskii(UC),Pinus sylvestris var. mongolica Litv.(UP),Corethrodendron fruticosum+Elymus dahuricus+Agropyron cristatum(HEA),Pinus sylvestris var.mongolica Litv+Corethrodendron fruticosum(HP)in Hulun Buir Sandy Land were taken as the research objects,and the mobile sandy land without any control measures was taken as the control(CK).The soil water content,bulk density and porosity in 0-100 cm soil layer of each region were measured,and the differences of soil physical properties in different regions were compared.The results showed that:1)The soil water content under UH,UC and HEA was relatively high,which increased by 121.90%,47.87% and 44.96%,respectively,compared with CK.The soil saturated water-holding capacity under UH、UC、UP、HEA、HP was significantly higher than that of CK(P<0.05),which increased by 27.48%,3.57%,5.44%,7.37% and 3.46%,respectively,and fluctuated with the increase of soil depth.2)Except for HP measure,the soil bulk density under the other four measures(UH,UC,UP,HEA)was significantly different from that of CK(P<0.05),which decreased by 5.42%,3.01%,2.41% and 1.81%,respectively,and decreased first and then increased with soil depth.3)The soil porosity under UH and UC measures increased by 3.48% and 2.47%,respectively,compared with CK,and there was no significant difference between other measures and CK.4)Through the comprehensive analysis of membership function,it was found that single shrub measures(UH,UC)and shrub-grass combination measures(HEA)had better overall recovery effect on the control area.

Key words: soil water content, soil bulk density, soil porosity, soil saturated water holding capacity, governance model, Hulun Buir Sandy Land

CLC Number:

S157
S718.5

ZHU Lei, YUAN Limin, MENG Zhongju. Effects of different vegetation restoration measures on soil physical properties in Hulun Buir Sandy Land[J]. Forest and Grassland Resources Research, 2025, (3): 45-53.

Figures/Tables 11

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样地模式	组成要素	海拔/ m	坡向	坡度/ (°)	密度/ (株/hm²)	总盖度/ %	样地面积/ hm²	治理时间/ a
UH	羊柴(Corethrodendron fruticosum)	611	阴坡	20	2 275	45	2 000	4
UC	拧条锦鸡儿(Caragana korshinskii)	602	阳坡	15	3 800	75	2 500	4
UP	樟子松(Pinus sylvestris var.mongolica Litv)	622	阳坡	24	650	75	3 500	5
HEA	羊柴(Corethrodendron fruticosum)	631	阴坡	10	1 200	75	3 000	4
	披碱草(Elymus dahuricus)				1 350
	冰草(Agropyron cristatum)				1 450
HP	樟子松(Pinus sylvestris var.mongolica Litv)	616	阳坡	28	450	60	2 500	5
HP	羊柴(Hedysarum fruticosum)	616	阳坡	28	3 545	60	2 500	5
CK	沙土	611	阳坡	15	0	0	1 500

样地模式	土壤含水量/ %	土壤容重/ (g/cm³)	土壤孔隙度/ %	土壤饱和持水量/ %	均值隶属函数
UH	0.51	0.65	0.47	0.49	0.53
UC	0.48	0.46	0.63	0.51	0.52
UP	0.58	0.33	0.50	0.43	0.46
HEA	0.29	0.47	0.64	0.48	0.47
HP	0.35	0.52	0.55	0.47	0.47
CK	0.36	0.50	0.58	0.39	0.46