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Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from inner Mongolia Grasslands
It is suggested that the critical threshold for N-induced species loss to mature Eurasian grasslands is below 1.75gNm � 2 yr � 1, and that changes in aboveground biomass, species richness, and plant functional group composition to both mature and degraded ecosystems saturate at N addition rates of approximately 10.5 gNm� 2 yr� 1. Expand
Ecosystem stability and compensatory effects in the Inner Mongolia grassland
The study provides new insights for better management and restoration of the rapidly degrading Inner Mongolia grassland and corroborate some previous findings of compensatory effects. Expand
Primary production and rain use efficiency across a precipitation gradient on the Mongolia Plateau.
The results clearly indicate that the patterns of both ANPP and RUE are scale dependent, and the seemingly conflicting patterns of RUE in space vs. time suggest distinctive underlying mechanisms, involving interactions among precipitation, soil N, and biotic factors. Expand
Grassland ecosystems in China: review of current knowledge and research advancement
Major findings of scientific significance in China's grassland ecosystem research include: (i) improved knowledge on succession and biogeochemistry of the semi-arid and temperate grassland ecosystems, and (ii) development of effective management strategies for controlling rodent pests in grass land ecosystems. Expand
Carbon and nitrogen store and storage potential as affected by land-use in a Leymus chinensis grassland of northern China
Understanding the store and storage potential of carbon (C) and nitrogen (N) helps us understand how ecosystems would respond to natural and anthropogenic disturbances under different managementExpand
Aridity threshold in controlling ecosystem nitrogen cycling in arid and semi-arid grasslands.
Investigation of soil N isotopic values along a 3,200 km aridity gradient reveals a hump-shaped relationship between soil δ(15)N and aridity index (AI) with a threshold at AI=0.32, and suggests different controlling factors of N-cycling on either side of the threshold. Expand
Nitrogen deposition weakens plant-microbe interactions in grassland ecosystems.
It is found that soil acidification resulting from N addition, rather than changes in the plant community, was most closely related to shifts in soil microbial community composition and decline of microbial respiration, indicating a down-regulating effect of high N availability on plant-microbe interactions. Expand
Positive linear relationship between productivity and diversity: evidence from the Eurasian Steppe
Summary 1 Understanding the productivity–diversity relationship (PDR) is a key issue in biodiversity–ecosystem functioning research, and has important implications for ecosystem management.Expand
The Three Gorges Dam: an ecological perspective
The Three Gorges Dam in China is the largest dam ever built. Its impacts on the biodiversity and ecological processes in the region are causing concern to ecologists worldwide. The dam and associatedExpand
Temperature and soil moisture interactively affected soil net N mineralization in temperate grassland in Northern China
Intact soil cores from three adjacent sites (Site A: grazed, Site B: fenced for 4 years, and Site C: fenced for 24 years) were incubated in the laboratory to examine effects of temperature, soilExpand