The spatial distribution characteristics of soil salinity in coastal zone of the Yellow River Delta

Yu, Junbao; Li, Yunzhao; Han, Guoqi; Zhou, Di; Fu, Yuqin; Guan, Bo; Wang, Guangmei; Ning, Kai; Wu, Huifeng; Wang, Jihong

doi:10.1007/s12665-013-2980-0

Cited by 145 publications

(90 citation statements)

References 37 publications

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“…Profile 3 was an exception, here a decreasing tendency was observed. The results (Yu et al 2014) showed that the salinity in topsoil was higher, indicating that the salt in subsoil moved up and accumulated in topsoil as a function of evaporation. The spatial distribution of soil salinity resulted from the comprehensive effects of anthropogenic activities and some natural factors.…”

Section: Resultsmentioning

confidence: 94%

Vertical distribution of phosphorus concentrations, phosphatase activity and further soil chemical properties in salt-affected Mollic Gleysols in Poland

Lemanowicz

Krzyżaniak

2015

Environ Earth Sci

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The paper demonstrates distribution of the content of total and available phosphorus and activity of the alkaline and acid phosphatase against the selected properties of salt-affected Mollic Gleysols. In the adequately prepared soil, the following were determined: pH, total organic carbon, the exchangeable cations (Ca, Mg, Na, K), salinity, the content of phosphorus, the activity of phosphomonoesterases. The distribution of the elements in the soil profiles was described with the value of the Distribution Index. To evaluate the availability of phosphorus, the Index of Mobility was used. The content of phosphorus varies, and it depends on physicochemical soil properties. Both the content of phosphorus available to plants and the activity of phosphatases in the profiles showed a high variation that depends both on the sampling date and on the depth. The lowest content of phosphorus was found in the profiles sampled in spring, during an intensive plant growth, while the greatest content was received in soil profiles sampled in summer. The research showed also a high variation in the time of the activity of phosphatases as well as their changes depending on the soil parameters, which was confirmed by the recorded values of the correlations between the activity of alkaline and acid phosphomonoesterases and the content of carbon, respectively, (r = 0.47, P \ 0.05) and (r = 0.62, P \ 0.05) as well as available phosphorus (r = 0.32, P \ 0.05) and (r = 0.38, P \ 0.05). A many-year seasonal salinity of soil did not decrease the activity of the phosphomonoesterases since it was mostly connected with the natural content of organic carbon.

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Section: Resultsmentioning

confidence: 94%

Vertical distribution of phosphorus concentrations, phosphatase activity and further soil chemical properties in salt-affected Mollic Gleysols in Poland

Lemanowicz

Krzyżaniak

2015

Environ Earth Sci

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“…Yu et al (2010) studied the spatial distribution characteristics of soil nutrients in new-born coastal wetland in the Yellow River Delta and the results showed TOC:N:P ratio of 17.6:9.5:1.9 in an estuarine wetland scale. Related studies also found that element ratios in terrestrial systems appeared to be more variable than those in the ocean, but parallels between the nutrient abundance of organism and the environment seemed to exist in plant communities and forest ecosystems worldwide (Cleveland and Liptzin, 2007;Hedin, 2004;McGroddy et al, 2004;Reich and Oleksyn, 2004).…”

Section: C N and P Stoichiometry In Different Wetland Soils And Plantsmentioning

confidence: 99%

Influences of anthropogenic cultivation on C, N and P stoichiometry of reed-dominated coastal wetlands in the Yellow River Delta

et al. 2014

Geoderma

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Motivated by the previous studies that indicated well-constrained carbon:nitrogen:phosphorus (C:N:P) ratios in planktonic biomass, and their importance to improve our understanding on the biological processes and nutrient cycling in marine ecosystems, ecologists have endeavored to search for similar patterns and relationship in terrestrial ecosystems. Recent analyses indicated that "Redfield-like" ratios existed in plants; such data might provide insight into the nature of nutrient limitation in terrestrial ecosystems. We attempted to determine if analogous C:N:P stoichiometrical ratios exist in the soil and plant in the reed-dominated coastal wetlands of the Yellow River Delta (YRD). Under the influences of anthropogenic cultivation in the YRD, the reeddominated wetlands could be classified into three categories, new-born wetland (NW), farmland converted into wetland (FW) and cotton wetland (CW). In these three wetland categories, our results showed that atomic C:N:P ratios (R CNP ) in both the soil (42.6:1.6:1, 71.2:2.0:1 and 63.2:1.9:1, respectively) and the plant (1753:22.4:1, 1539:23.0:1 and 1196:23.8:1, respectively) were not well-constrained. Though C:N ratios (R CN ) and C:P ratios (R CP ) were of relatively large variation among different wetland soils and plants, average atomic N:P ratios (R CN ) in both the soil (~1.9:1) and the plant (~23:1) were well-constrained in the reed-dominated wetlands at the YRD scale, suggesting that the N limitation and P limitation were found in the soils and the plants, respectively. The results potentially provide a useful reference for ongoing wetland conservation and restoration in the YRD.

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“…The average groundwater table is generally 2-3 m, and only 0.5-1.5 m along the coastline. The natural vegetation is composed of broadleaf deciduous forest (mainly Hankow willow and weeping willow), shrubbery (mainly Chinese tamarisk), and shore coppice [38]. The YRD is one of six of the most beautiful wetlands in China and an important energy base with more than 5 × 10 9 t petroleum and 2.3 × 10 11 m natural gas [23,39].…”

Section: Study Areamentioning

confidence: 99%

Understanding Land Use and Land Cover Dynamics from 1976 to 2014 in Yellow River Delta

Zhang

Feng

et al. 2017

Land

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Long-term intensive land use/cover changes (LUCCs) of the Yellow River Delta (YRD) have been happening since the 1960s. The land use patterns of the LUCCs are crucial for bio-diversity conservation and/or sustainable development. This study quantified patterns of the LUCCs, explored the systematic transitions, and identified wetland change trajectory for the period 1976-2014 in the YRD. Landsat imageries of 1976, 1984, 1995, 2006, and 2014 were used to derive nine land use classes. Post classification change detection analysis based on enhanced transition matrix was applied to identify land use dynamics and trajectory of wetland change. The five cartographic outputs for changes in land use underlined major decreases in natural wetland areas and increases in artificial wetland and non-wetland, especially aquafarms, salt pans and construction lands. The systematic transitions in the YRD were wetland degradation, wetland artificialization, and urbanization. Wetland change trajectory results demonstrated that the main wetland changes were wetland degradation and wetland artificialization. Coastline change is the subordinate reason for natural wetland degradation in comparison with human activities. The results of this study allowed for an improvement in the understanding of the LUCC processes and enabled researchers and planners to focus on the most important signals of systematic landscape transitions while also allowing for a better understanding of the proximate causes of changes.

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The spatial distribution characteristics of soil salinity in coastal zone of the Yellow River Delta

Abstract: In coastal area, salinization is a common and serious problem for crop cultivation and ecological

Cited by 145 publications

References 37 publications

Vertical distribution of phosphorus concentrations, phosphatase activity and further soil chemical properties in salt-affected Mollic Gleysols in Poland

Vertical distribution of phosphorus concentrations, phosphatase activity and further soil chemical properties in salt-affected Mollic Gleysols in Poland

Influences of anthropogenic cultivation on C, N and P stoichiometry of reed-dominated coastal wetlands in the Yellow River Delta

Understanding Land Use and Land Cover Dynamics from 1976 to 2014 in Yellow River Delta

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