【摘 要】
：
Speleothem carbonates are precipitated continuously from inorganic carbon dissolved in seepage water infiltrating from the land surface,that reflects a mixture of atmospheric CO_2,respired soil carbon
论文部分内容阅读
Speleothem carbonates are precipitated continuously from inorganic carbon dissolved in seepage water infiltrating from the land surface,that reflects a mixture of atmospheric CO_2,respired soil carbon,and epikarst sources,each with distinct δ~(13)C val
其他文献
The present study was an effort to understand the amount of litter fall and its subsequent decomposition and quantify the release of available nutrients and soil physicochemical characteristics in pla
This paper selected the typical wind-water erosion crisscross region Xiliugou watershed for research to reveal the impact of the landscape pattern change of the underlying surface in wind-water erosio
巴丹吉林沙漠东南缘新近发现的多处砂楔群和融冻褶皱,分别形成于砂砾石层和湖相沉积地层中,楔内充填物的光释光年龄证明其是末次冰期和晚冰期的产物.巴丹吉林沙漠在末次冰期和晚冰期时处于多年冻土带,年平均气温约为-3~-6℃,较现在降温约12~15℃.其时,整个阿拉善高原与纬度多年冻土带和青藏高原冻土区相连接,沙漠腹地及周边的沙丘应处于冻土状态,沙丘的移动和风沙地貌发育均会受到影响.在冷期,巴丹吉林沙漠很有
Soil salinization may negatively affect microbial processes related to carbon dioxide(CO_2) and nitrous oxide(N_2O) emissions. A short-term laboratory incubation experiment was conducted to investigat
Regression models for predicting soil bulk density(BD) have usually been related to organic matter content, but it remains unknown whether soil acidity modifies this relationship, particularly for aff
Forest management practices such as prescribed burning and thinning in forest ecosystems may alter the properties of soil organic matter(SOM). In this study, surface soils from field plots in the Bank
Restoration of forests poses a major challenge globally, particularly in the tropics, as the forests in these regions are more vulnerable to land-use change. We studied land-use change from natural fo
Soil organic carbon(SOC) pool has the potential to mitigate or enhance climate change by either acting as a sink, or a source of atmospheric carbon dioxide(CO_2) and also plays a fundamental role in t
A behavior-oriented formula is improved to calculate the annual coastal bathymetry evolution caused by a reclamation work. This formula is based on a simple hypothesis that, on the time scale of years
新疆地质环境监测院『大地绽放的景观群—新疆地质遗迹』选用大量精美的图片,配以细腻优美的文字为读者描绘了占中国国土总面积六分之一,汇集天地万千宠爱,坐拥自然绝美风光的全景新疆。作为新疆重要地质遗迹调查项目的成果之一,该画册全面介绍了新疆复杂的地质构造、多样的地貌形态、丰富的地质遗迹,通过通俗易懂的话语,加之视觉冲击的图片,深入浅出的讲解了花岗岩地貌、雅丹地貌、丹霞地貌、石林地貌等专业的地学知识。不仅