Grassland conversion along a climate gradient in northwest China: Implications for soil carbon and nutrients

2020 ◽  
Vol 36 (3) ◽  
pp. 410-419
Author(s):  
Xiaomin Huang ◽  
Zhenwei Song ◽  
Kees Jan Groenigen ◽  
Zhiyu Xu ◽  
Bo Huang ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Northwest China ◽  
Climate Gradient ◽  
Grassland Conversion

Modeling impacts of management on farmland soil carbon dynamics along a climate gradient in Northwest China during 1981–2000

2015 ◽  
Vol 312 ◽  
pp. 1-10 ◽  
Author(s):  
Fan Zhang ◽  
Changsheng Li ◽  
Zheng Wang ◽  
Stanley Glidden ◽  
Danielle S. Grogan ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Dynamics ◽  
Northwest China ◽  
Soil Carbon Dynamics ◽  
Climate Gradient ◽  
Farmland Soil

scholarly journals Allocation pattern and accumulation potential of carbon stock in natural spruce forests in northwest China

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4859 ◽  
Author(s):  
Jun-Wei Yue ◽  
Jin-Hong Guan ◽  
Lei Deng ◽  
Jian-Guo Zhang ◽  
Guoqing Li ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Fine Roots ◽  
Carbon Stock ◽  
Northwest China ◽  
Carbon Stocks ◽  
Stand Age ◽  
Natural Forests ◽  
Spruce Forests ◽  
Accumulation Potential

Background The spruce forests are dominant communities in northwest China, and play a key role in national carbon budgets. However, the patterns of carbon stock distribution and accumulation potential across stand ages are poorly documented. Methods We investigated the carbon stocks in biomass and soil in the natural spruce forests in the region by surveys on 39 plots. Biomass of tree components were estimated using allometric equations previously established based on tree height and diameter at breast height, while biomass in understory (shrub and herb) and forest floor were determined by total harvesting method. Fine root biomass was estimated by soil coring technique. Carbon stocks in various biomass components and soil (0–100 cm) were estimated by analyzing the carbon content of each component. Results The results showed that carbon stock in these forest ecosystems can be as high as 510.1 t ha−1, with an average of 449.4 t ha−1. Carbon stock ranged from 28.1 to 93.9 t ha−1 and from 0.6 to 8.7 t ha−1 with stand ages in trees and deadwoods, respectively. The proportion of shrubs, herbs, fine roots, litter and deadwoods ranged from 0.1% to 1% of the total ecosystem carbon, and was age-independent. Fine roots and deadwood which contribute to about 2% of the biomass carbon should be attached considerable weight in the investigation of natural forests. Soil carbon stock did not show a changing trend with stand age, ranging from 254.2 to 420.0 t ha−1 with an average of 358.7 t ha−1. The average value of carbon sequestration potential for these forests was estimated as 29.4 t ha−1, with the lower aged ones being the dominant contributor. The maximum carbon sequestration rate was 2.47 t ha−1 year−1 appearing in the growth stage of 37–56 years. Conclusion The carbon stock in biomass was the major contributor to the increment of carbon stock in ecosystems. Stand age is not a good predictor of soil carbon stocks and accurate evaluation of the soil carbon dynamics thus requires long-term monitoring in situ. The results not only revealed carbon stock status and dynamics in these natural forests but were helpful to understand the role of Natural Forest Protection project in forest carbon sequestration as well.

Effect of Vegetation Rehabilitation on Soil Carbon and Its Fractions in Mu Us Desert, Northwest China

2014 ◽  
Vol 17 (6) ◽  
pp. 529-537 ◽  
Author(s):  
Jia-Bin Liu ◽  
Yu-Qing Zhang ◽  
Bin Wu ◽  
Shu-Gao Qin ◽  
Xin Jia ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Northwest China ◽  
Mu Us Desert

Changes in soil carbon flux and carbon stock over a rotation of poplar plantations in northwest China

2010 ◽  
Vol 26 (1) ◽  
pp. 153-161 ◽  
Author(s):  
Jianbiao Zhang ◽  
Tieliang Shangguan ◽  
Ziqiang Meng
Keyword(s):  
Soil Carbon ◽  
Carbon Flux ◽  
Carbon Stock ◽  
Northwest China ◽  
Poplar Plantations

Distribution of soil carbon and grain yield of spring wheat under a permanent raised bed planting system in an arid area of northwest China

2016 ◽  
Vol 163 ◽  
pp. 274-281 ◽  
Author(s):  
Zhongming Ma ◽  
Juan Chen ◽  
Xiaodong Lyu ◽  
Li-li Liu ◽  
Kadambot H.M. Siddique
Keyword(s):  
Grain Yield ◽  
Soil Carbon ◽  
Spring Wheat ◽  
Northwest China ◽  
Arid Area ◽  
Raised Bed ◽  
Planting System
Sign in / Sign up

Export Citation Format

Share Document