Comparison of nitrogen nutrition and soil carbon status of afforested stands established in degraded soil of the Loess Plateau, China

Hu, Bin; Zhou, Minghua; Dannenmann, Michael; Saiz, Gustavo; Simon, Judy; Bilela, Silvija; Liu, Xiping; Hou, Lin; Chen, Hui; Zhang, Shuoxin; Butterbach‐Bahl, Klaus; Rennenberg, Heinz

doi:10.1016/j.foreco.2016.12.011

Cited by 39 publications

(8 citation statements)

References 76 publications

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“…Nitrogen‐fixing species can affect the nutritional status of adjacent non‐nitrogen‐fixing species (Hu et al ). Here, we found the nitrogen‐fixing species planted as neighbors significantly changed the nutritional status of Chinese pine, and these changes were also dependent on neighbor identity.…”

Section: Discussionmentioning

confidence: 99%

Neighborhood effects on soil properties, mycorrhizal attributes, tree growth, and nutrient status in afforested zones

Sheng

Chen

et al. 2020

Restoration Ecology

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A harmonious interspecies relationship is the key to the success of mixed afforestation. This study was conducted to assess the responses of afforestation species to their neighboring trees. We examined five types of stands—monocultures of Chinese pine (Pinus tabuliformis), black locust (Robinia pseudoacacia), sea‐buckthorn (Hippophae rhamnoides), and two mixtures (Chinese pine × black locust mixture and Chinese pine × sea‐buckthorn mixture)—in the Loess Plateau, northwestern China. The height and diameter at breast height of each tree species were measured, and rhizosphere soil, shoot, and root were sampled. In monocultures, black locust was taller than Chinese pine and sea‐buckthorn, while the height of Chinese pine and sea‐buckthorn was similar. In mixtures, Chinese pine grew better with sea‐buckthorn than alone as a result of modified soil properties and plant nutrition, but not with black locust. When Chinese pine was used as neighbors, it affected the level of arbuscular mycorrhizal (AM) colonization of black locust, soil properties and AM fungal spore density of black locust and sea‐buckthorn, but did not significantly affect their growth. Our results suggest that the reciprocal effects between tree species in mixture are not symmetric, and thus planning for efficient mixed afforestation requires knowledge of species‐specific growth rate, nutrient requirements, and species interactions.

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Section: Discussionmentioning

confidence: 99%

Neighborhood effects on soil properties, mycorrhizal attributes, tree growth, and nutrient status in afforested zones

Sheng

Chen

et al. 2020

Restoration Ecology

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“…Moreover, forest land can improve the availabilities of soil N and organic C, and R . pseudoacacia cou1d enhance the concentration of NO 3 – as well as the availabilities of soil TN and OM in the rhizosphere soil because of the N 2 -fixing functions of its roots [ 78 ]. The Hippophae rhamnoides mixed forests significantly increased the OM, TN, AP, and AK contents compared with the pure forests [ 79 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of vegetation, terrain and soil layer depth on eight soil chemical properties and soil fertility based on hybrid methods at urban forest scale in a typical loess hilly region of China

Zhang¹,

Wang

Fan

et al. 2018

PLoS ONE

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Although the spatial mapping and fertility assessment of soil chemical properties (SCPs) are well studied in the Loess Plateau region of China at farmland scale, little is known about spatial mapping the SCPs and their fertility and their influence factors at urban forest scale. The objectives of this study were to (1) compare the performance of two spatial interpolation methods, Ordinary kriging (OK) and regression kriging (RK), and (2) explain the relationships of the vegetation, terrain, and soil layer depth between the eight SCPs and their fertility, and (3) find the limiting factors of soil comprehensive fertility in this study area? The Yan’an urban forest was taken as study case, used hybrid spatial interpolation methods based on OK and RK to mapping eight SCPs and the soil fertility in each soil layer (0–20 cm, 20–40 cm, and 40–60 cm) for 285 soil samples. The results indicated that RK outperformed OK for total nitrogen (TN), available potassium (AK), organic matter (OM) in 0–60 cm profile and available phosphorus (AP) in the 0–20 cm and 40–60 cm soil layers because RK considered the impact of terrain. The terrain factors, comprising the relative terrain position, slope, aspect, and relative elevation significantly affected the SCPs and spatial heterogeneity of fertility, where the vegetation cover types determined the average SCPs to some extent. On average, the six SCPs (except total potassium and AP) and the fertility decreased as the soil layer depth increased. Ten vegetation cover types comprising broadleaved mixed natural forest (BM), cultivated land (CL), economic forest (EF), grassland (GL), Platycladus orientalis natural forest (PON), Platycladus orientalis plantation (POP), Pinus tabuliformis plantation (PT), Quercus wutaishanica natural forest (QW), Robinia pseudoacacia plantation (RP), and Shrubwood (SW) were associated with significant differences in TN, OM, AN, AP, and AK, across the three soil layers. QW, PON, and BM also had higher content of TN, OM, AN, and AK contents than the other vegetation cover types. There were small differences in TK, AK, and pH among the 10 vegetation cover types. We concluded that AN, TN, and OM are the limiting factors of soil comprehensive fertility in this region. These results improve understanding of the spatial mapping, influence and limiting factors of SCPs and their fertility at urban forest scales.

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“…It has been found that N-fixing species are able to not only enhance soil fertility but also affect the plant nutrition status of adjacent nonnitrogen-fixing species (Hu et al, 2017). For instance, Persian walnut is considered as a non-nitrogen-fixing species that exhibits weak N uptake capability grown in monoculture (Chifflot, Bertoni, Cabanettes, & Gavaland, 2006;Loewenstein & Pallardy, 2002), whereas its N nutrition can be greatly improved if interplanted with suitable N-fixing nurse tree species such as black locust (Bohanek & Groninger, 2005;Clark, Hemery, & Savill, 2008;Jose, Williams, & Zamora, 2006 et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Why does oriental arborvitae grow better when mixed with black locust: Insight on nutrient cycling?

Chen

Tang

Zhang

et al. 2017

Ecology and Evolution

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To identify why tree growth differs by afforestation type is a matter of prime concern in forestry. A study was conducted to determine why oriental arborvitae (Platycladus orientalis) grows better in the presence of black locust (Robinia pseudoacacia) than in monoculture. Different types of stands (i.e., monocultures and mixture of black locust and oriental arborvitae, and native grassland as a control) were selected in the Loess Plateau, China. The height and diameter at breast height of each tree species were measured, and soil, shoot, and root samples were sampled. The arbuscular mycorrhizal (AM) attributes, shoot and root nutrient status, height and diameter of black locust were not influenced by the presence of oriental arborvitae. For oriental arborvitae, however, growing in mixture increased height and diameter and reduced shoot Mn, Ca, and Mg contents, AM fungal spore density, and colonization rate. Major changes in soil properties also occurred, primarily in soil water, NO 3‐N, and available K levels and in soil enzyme activity. The increase in soil water, N, and K availability in the presence of black locust stimulated oriental arborvitae growth, and black locust in the mixed stand seems to suppress the development of AM symbiosis in oriental arborvitae roots, especially the production of AM fungal spores and vesicles, through improving soil water and N levels, thus freeing up carbon to fuel plant growth. Overall, the presence of black locust favored oriental arborvitae growth directly by improving soil water and fertility and indirectly by repressing AM symbiosis in oriental arborvitae roots.

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Comparison of nitrogen nutrition and soil carbon status of afforested stands established in degraded soil of the Loess Plateau, China

Cited by 39 publications

References 76 publications

Neighborhood effects on soil properties, mycorrhizal attributes, tree growth, and nutrient status in afforested zones

Neighborhood effects on soil properties, mycorrhizal attributes, tree growth, and nutrient status in afforested zones

Effects of vegetation, terrain and soil layer depth on eight soil chemical properties and soil fertility based on hybrid methods at urban forest scale in a typical loess hilly region of China

Why does oriental arborvitae grow better when mixed with black locust: Insight on nutrient cycling?

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