Phthalate esters in surface water of Songhua River watershed associated with land use types, Northeast China

An improved understanding of changes in carbon storage of terrestrial ecosystems is very important for assessing the impacts of increasing atmospheric CO2 concentration and climate change on the terrestrial biosphere. Accurately predicting terrestrial carbon (C) storage requires understanding the carbon stock, because it helps us understand how ecosystems would respond to natural and anthropogenic disturbances under different management strategies. We investigated organic C storage in aboveground biomass, litter, roots, and soil organic matter (SOM) in five land-use types (i.e. artificial pasture, AP; natural meadow, NM; corn plantation, CP; temperate savanna, TS; and bush wood, BW) in meadow steppe of Northeast China. The primary objective of this study was to ascertain the impact of different land-use types on the carbon stock. The total C storage (including C stored in aboveground biomass, litter, roots, and 0–100-cm soil layers) did not significantly differ between one and another type among the five pairs (P>0.05), with the exception of AP2-BW pair. The total C storage changes in value varying from 5958.09 g C m-2 for plot NM2 to 11922.87 g C m-2 for plot CP1. The C stored in the aboveground biomass was less than 1177.96 g C m-2, accounting for negligible amounts (<1% of the total) of total C storage in the ecosystem except corn plantation. The amount of C stored in SOM accounted for less than 85% of the total C storage in TS, AP2, and NM3, and the C stored in litter was very low (<1.5%), compared to other pools in the ecosystem. The amount of C stored in the roots varied from 0 g C m-2 for plot BW, CP1, and CP2 to 2032.32 g C m-2 for plot NM3, and it accounted for less than 20% of C storage in the grassland.

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A sustainable plan for conserving forest biodiversity in far East Russia and northeast China

The Forestry Chronicle ◽

10.5558/tfc73565-5 ◽

1997 ◽

Vol 73 (5) ◽

pp. 565-571 ◽

Cited By ~ 3

Author(s):

Bruce G. Marcot ◽

Sergei S. Ganzei ◽

Tiefu Zhang ◽

Boris A. Voronov

Keyword(s):

Land Use ◽

Resource Use ◽

Northeast China ◽

Far East ◽

Sustainable Land Use ◽

Forest Biodiversity ◽

River Watershed ◽

East Russia ◽

Land Use Plan

An ongoing, trinational project is providing the first environmentally sustainable economic development plan for the Ussuri River watershed (URW) in Far East Russia and northeast China. The URW is host to a unique mix of northern taiga and southern subtropical biota, and contains many endemic, relict, and highly threatened species of plants and animals. In Russia, severe monetary inflation and a shift to a market economy have left some aspects of forest biodiversity in jeopardy, particularly policing for wildlife poachers, regulating CITES (international wildlife trafficking) violations, ensuring long-term sustained production of timber and non-timber forest products, protecting unique habitats, and adequately staffing scientific reserves and funding needed research. In China, broad scale conversion of remaining wetlands to agriculture and rice paddies, and of diverse native forests to intensively managed, monocultural plantations, is helping to sustain the economy but is sacrificing biodiversity. A proposed sustainable land use plan has (1) mapped resource use areas, including both proposed and existing transborder nature areas, (2) encouraged foreign investment in both countries, and (3) encouraged sustainable development of natural resource markets that will be compatible with long-term conservation of biodiversity. A hallmark of this plan is integrating the needs of the people with the capacity of the land through both environmental protection and wise resource use. Key words: Russia, China, Far East, Ussuri River watershed, biodiversity, sustainable, land use plan, wildlife

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The Variation of the Soil Bacterial and Fungal Community Is Linked to Land Use Types in Northeast China

Sustainability ◽

10.3390/su11123286 ◽

2019 ◽

Vol 11 (12) ◽

pp. 3286 ◽

Cited By ~ 2

Author(s):

Jincai Ma ◽

Sumiya Nergui ◽

Ziming Han ◽

Guannan Huang ◽

Huiru Li ◽

...

Keyword(s):

Land Use ◽

Fungal Community ◽

Northeast China ◽

Fungal Communities ◽

Soil Parameters ◽

Land Use Type ◽

Forest Land ◽

Soil Microbial ◽

Crop Land ◽

Land Use Types

From the west to the east across Northeast China, there are three major land use types, ranging from agricultural-pastoral interlaced land, crop land, and forest land. The soil microbial community of each land use type has been reported; however, a thorough comparison of the soil microbial ecology of soils from each land use type has not been made. In the current study, soil samples from agricultural-pastoral land, crop land, and an artificial economic forest were collected from Tongliao, Siping, and Yanji, respectively. The structure and composition of bacterial and fungal communities was investigated by a next generation sequencing protocol, and soil physicochemical properties were also determined. Pair-wise analysis showed some soil parameters were significantly different between agricultural-pastoral land and crop land or forest land, while those soil parameters shared more similarities in crop land and forest land soils. Principal coordinates analysis and dissimilarity analyses jointly indicated that bacterial and fungal communities from each sampling site were quite different. Canonical correspondence analysis and a partial Mantel test showed that the community structures of bacteria and fungi were mainly affected by clay, pH, water soluble organic carbon (WSOC), and total soluble nitrogen (TN). Co-occurrence network analysis and the associated topological features revealed that the network of the bacterial community was more complex than that of the fungal community. Clay, pH, WSOC, and NH4+-N were major drivers and pH and WSOC were major factors in shaping the network of the bacterial community and the fungal community, respectively. In brief, our results indicated that microbial diversity, co-occurrence network patterns, and their shaping factors differed greatly among soils of distinct land use types in Northeast China. Our data also provided insights into the sustainable use of soils under different land use types.

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