Methane uptake by four land-use types in the agro-pastoral region of northern China

Asymmetric response of soil methane uptake rate to land degradation and restoration: Data synthesis

“…Other studies also reported that reduction of human disturbance could significantly increase soil CH 4 uptake rate (Peterson, Hanna, & Steiner, 2019;Zhao et al, 2016). However, the pasture converted to cropland did not significantly affect soil CH 4 uptake (Figure 2a), this phenomenon was possibly caused by the controversial results among different studies (Guo et al, 2015;Rong et al, 2015;Yang, Kang, Hou, & Zhao, 2019).…”

“…A few studies reported that croplands derived from reclaimed grazing or artificial pasture accelerated the CH 4 uptake rate due to the increased soil aeration and reduce soil BD (Ma et al, 2020;Rong et al, 2015;Yang et al, 2019). Other studies reported that the conversion of native pasture to cropland reduced the capacity of soil CH 4 uptake (Lu, Du, Du, Liang, & Qin, 2015;Mosier et al, 1997).…”

“…The conversion of other land use types to cropland was usually associated with intensive tillage and heavy fertilization, which could lead to soil compaction and reduction of methanotroph activity, and then followed by the decreased CH 4 uptake (Reay et al, 2018;Shukla et al, 2013). Yet, other studies found that cropland converted from grazing pasture could increase soil CH 4 uptake (Ma, Yang, Pan, & Rong, 2020;Rong, Ma, & Johnson, 2015). The discrepant results are probably attributed to the distinct land use history and type before land use change in various terrestrial ecosystems (Han & Zhu, 2020;Ma et al, 2020).…”

Effects of Grazing Pattern on Ecosystem Respiration and Methane Flux in a Sown Pasture in Inner Mongolia, China

“…Some other studies found that soil temperature and soil moisture played the major role in driving temporal variation in CH 4 emissions [49][50][51]. Among them, Zhao et al found that during the growing season, soil temperature played the dominant role in driving CH 4 emissions [49].…”

“…Among them, Zhao et al found that during the growing season, soil temperature played the dominant role in driving CH 4 emissions [49]. Rong et al reported that seasonality of CH 4 uptake was related to monthly mean temperature and precipitation, which together explained 56% (range: 40%-83%) of the variability in monthly cumulative soil CH 4 uptake [50]. Roy Chowdhury et al concluded that temporal dynamics of CO 2 production and methanogenesis at −2 • C showed evidence of fundamentally different mechanisms of substrate limitation and inhibited microbial growth at soil water freezing points compared to warmer temperatures [51].…”