Vegetation restoration technique system and its ecological functions of the degraded ecosystem in the arid-hot valleys

Ji, Zhonghua; Liao, Chengfei; Yang, Yongsheng; Fang, Haidong; Pan, Zhixian; Sha, Yucang

doi:10.1007/s11859-008-0301-3

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Ecological and environmental effects of vegetation restoration on degraded ecosystems have been reported in various terrestrial ecosystems (Ji et al, 2008; Peng et al, 2003). In arid desert ecosystems, vegetation restoration plays a predominant role in influencing ecosystem hydrological and edaphic processes, thus mediating water and nutrient availability, which limits plant growth and ecosystem productivity (Lindh et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Response of soil inorganic nitrogen dynamics to planting age and vegetation type in artificial sand‐fixing land

Yang,

Chen,

Zhao

et al. 2024

Ecosphere

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Vegetation restoration in dryland regions may be a powerful way to control desertification and promote local habitat recovery. In these artificial revegetation systems, ecosystem processes and functioning are strongly determined by nitrogen (N) availability, while soil inorganic N (SIN) is the major available N form and is absorbed as a main N source for plants. However, SIN dynamics, their influencing factors, and their relative importance to the ecosystem of these N‐limited systems are not well understood. A field investigation was conducted to examine the monthly variations in SIN and its response to planting age and vegetation type in a typical artificial sand‐fixing system in northwestern China. The SIN content in topsoil (0–20 cm) during the growing season ranged from 7.10 to 95.65 mg kg−1, with a mean value of 27.14 mg kg−1. Soil nitrate N had a dominant role in determining SIN monthly dynamics, which showed a fluctuating trend with two peak values in early July and late August. SIN showed a significant increasing trend with the planting age of sand‐fixing vegetation, and it was highest for Nitraria sphaerocarpa (55.66 ± 5.76 mg kg−1), followed by Haloxylon ammodendron (29.81 ± 3.47 mg kg−1) and interspace (11.39 ± 1.13 mg kg−1). SIN displayed a hump‐shaped relationship with air temperature (R2 = 0.96, p < 0.01) and had a maximum at 19.88°C. The change rate of SIN was positively correlated with accumulated precipitation (R2 = 0.99, p < 0.05). SIN was correlated significantly with soil organic carbon (SOC), total nitrogen (TN), and soil clay content. Our results revealed that climatic (air temperature and precipitation), abiotic (soil texture), plant (planting age and vegetation type), and nutrient‐related (SOC and TN) factors regulate SIN dynamics in artificial sand‐fixing vegetation systems. Climate was the predominant factor affecting soil ammonium N, and soil nutrients (SOC and TN) were the predominant factor affecting soil nitrate N. Therefore, these factors should be integrated into optimizing regional vegetation establishment and improving ecosystem management practices in sand‐fixing lands.

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Section: Discussionmentioning

confidence: 99%

Response of soil inorganic nitrogen dynamics to planting age and vegetation type in artificial sand‐fixing land

Yang,

Chen,

Zhao

et al. 2024

Ecosphere

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“…Soil water content is determined by the input, such as precipitation and irrigation, together with the output, such as infiltration and evapotranspiration. Plants can increase infiltration rate (Ji et al, 2008) and water holding capacity but also consume a large amount of water during transpiration. As a result, soil water content may be increased or decreased by coexisting species (Bréda et al, 1995, D'Odorico et al, 2007.…”

Section: The Effect Of Herbaceous Species On the Growth Of Shrubmentioning

confidence: 99%

Rapid revegetation by sowing seed mixtures of shrub and herbaceous species

et al. 2015

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Abstract. Fast revegetation by means of sowing seed mixtures of shrub and herbaceous species is a measure to prevent bare soils from wind and water erosion. A field experiment was used to test the effect of species selection and the ratio of shrub to herbaceous species on vegetation formation and shrub growth. Results showed that herbaceous species hastened cover formation and maintained a high coverage for a longer period. However, the growth of shrubs was hindered. In the North China Plain or where the soil and climate are similar, the ratio of shrub to herbaceous seeds is proposed to be 6 : 4-7 : 3 (weight ratio). Among the herbaceous species tested, Festuca arundinacea Schreb. grows relatively slow, so it should be mixed with other fast-growing species in the practice of rapid revegetation, and a seeding density lower than 6 g m −2 is proposed when applied; Orychophragmus violaceus O. E. Schulz. wilts when the seeds are ripe, leading to a significant decrease of coverage, so other species with different phenology should be involved when it is applied; Viola philippica Car. is a good ground cover plant which grows fast and maintains a stable coverage from July to October, and a seeding density of 1.5 g m −2 is proposed for rapid revegetation. Herbaceous species have different traits. Three different types of herbs were found in our experiment: slowgrowing stable species (F. arundinacea), fast-growing unstable species (O. violaceus) and fast-growing stable species (V. philippica). Shrubs, slow-growing stable species and fastgrowing unstable species should not be used alone because they cannot cover the ground fast or they cannot maintain a long period of good coverage. A small seeding rate of fastgrowing stable species should be used to ensure a fair coverage against erosion. Because natural environmental conditions are heterogeneous and stochastic, more species should be added to enhance the stability of plant community.

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Section: The Effect Of Herbaceous Species On the Growth Of Shrubmentioning

confidence: 99%

Rapid revegetation by sowing seed mixtures of shrub and herbaceous species

Feng¹,

Zhang²,

Zhao³

2015

Preprint

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Abstract. Fast revegetation by means of sowing seed mixture of shrub and herbaceous species is a measure to prevent bare soils from wind and water erosion. Field experiment was used to test the effect of species selection and the ratio of shrub to herbaceous species on vegetation formation and shrub growth. Results showed that herbaceous species hastened cover formation and maintained a high coverage for longer period. However, the growth of shrubs was hindered. In North China Plain or where the soil and climate are similar, the ratio of shrub to herbaceous seeds is proposed to be 6:4–7:3 (weight ratio). Among the herbaceous species tested, Festuca arundinacea Schreb. grows relatively slow so it should be mixed with other fast-growing species in the practice of rapid revegetation, and a seeding density lower than 6 g m−2 is proposed when applied; Orychophragmus violaceus O. E. Schulz. wilts when the seeds are ripe, leading to a significant decrease of coverage, so other species with different phenology should be involved when it is applied; Viola philippica Car. is a good ground cover plant, which grows fast and maintains a stable coverage form July to October, and a seeding density of 1.5 g m−2 is proposed for rapid revegetation.

show abstract

Vegetation restoration technique system and its ecological functions of the degraded ecosystem in the arid-hot valleys

Cited by 3 publications

References 6 publications

Response of soil inorganic nitrogen dynamics to planting age and vegetation type in artificial sand‐fixing land

Response of soil inorganic nitrogen dynamics to planting age and vegetation type in artificial sand‐fixing land

Rapid revegetation by sowing seed mixtures of shrub and herbaceous species

Rapid revegetation by sowing seed mixtures of shrub and herbaceous species

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