Material Evidence Analysis and Regional Classification and Identification of Soil Based on X-ray Fluorescence Spectrometry and X-ray Diffraction [PDF]
In the field of forensic science identification, geochemical-related materials such as soils and rocks were important sources of material evidence. In actual case analysis, the information provided by material evidence often pointed to unknown areas ...
Enhao ZHAO +6 more
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Characteristics of the aboveground biomass and diversity along altitudinal gradients in alpine meadows of the upper reaches of the Yarlung Zangbo River [PDF]
[Objective] The Yarlung Zangbo River is the most important river in the Tibetan Plateau, and the study of aboveground biomass and species diversity of the Yarlung Zangbo River is of great significance for the understanding of grassland resources and ...
DONG Ruizhen +5 more
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长期氮沉降和地上凋落物处理对半干旱区沙质草地表层土壤碳氮组分的影响
Shuitu Baochi Xuebao, 2023 为揭示半干旱区沙质草地生态系统中表层土壤C、N组分对长期氮添加和地上凋落物处理的响应特征,以科尔沁沙地西南部国家野外科学观测研究站建立的长期(9年)氮添加和凋落物处理样地为平台,测定并分析该样地表层土壤环境因子、铵态氮、硝态氮、总有机碳、不同碳氮组分。结果表明:(1)持续9年的氮添加和地上凋落物处理对表层土壤环境因子和不同碳氮组分无交互作用;(2)氮添加处理显著降低土壤pH ...
詹瑾 +8 more
doaj
Exploration on the surface water leakage mechanism of travertine pools in Salix cupularis shrub area of Huanglong Scenic Spot, Sichuan Province [PDF]
Recently, some travertine landscape groups in Huanglong Scenic Spot have been degraded to varying degrees. Surface water leakage, blackening and desertification have occurred on a large scale in the dense distribution area of Salix cupularis shrub, which
Dong SUN +8 more
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Transformation of Stock Farming Production Practices in the Horqin District of Inner Mongolia －Case Study of the Agropastoral Village Dalanail Gacha－ [PDF]
, 2020 ホルチンという言葉は本来モンゴル遊牧民の中の一部族であるホルチン部を指してきたが、徐々にホルチン部族が生活する地域を「ホルチン地区」と呼ぶようになった。特に中華人民共和国の成立後、興安嶺の東南麓に位置する内モンゴル自治区東部の通遼市を中心として指すようになった。 ホルチン地域は清朝時代の移民開墾を経て、農耕を中心とするようになり、モンゴル人の半農半牧村落社会が形成された。モンゴル人総人口の80％ 以上はこの東部地域に居住し、主に農業と「半農・半牧」生業を営んでいる。西部地域は、主に牧畜業を営み ...
包 周娜
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Effects of different land use types on soil structure and hydraulic characteristics of reclaimed coal mines in semi-arid areas [PDF]
In order to explore the water characteristics of soil in reclaimed coal mines in semi-arid areas and make better use of the land in reclaimed mining areas, the basic physical properties, water characteristic curves, unsaturated water conductivity and ...
Duomei LI +5 more
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, 2014 契丹辽朝虽然是游牧民族建立的封建王朝,但早已在其前史中就开始接触州县行政了。循契丹辽朝州县建置的发展脉络,以州县人口来源为根据,契丹辽朝州县大体可分为移民州县、燕云接收州县和边防城三类。契丹辽朝移民州县的设置和燕云州县的整体接收,巧妙地解决了原有部落组织的保留与中原州县行政的移植之间的尖锐矛盾,从而充分地体现了契丹辽朝“因俗而治“的统治策略,而且透视出国家经济一体化的形成轨迹。厦门大学985工程重点学科“马克思主义理论 ...
王明前
core
The effects of drought stress on the stoichiometric characteristics of C, N, and P in Pinus yunnanensis seedlings [PDF]
[Objective] This study aims to investigate the effects of drought stress on the distribution of carbon (C), nitrogen (N), and phosphorus (P) elements and stoichiometry in organs of Pinus yunnanensis seedlings, and to provide a theoretical basis for ...
CHEN Gang +5 more
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Zhejiang Daxue xuebao. Lixue banDeserts are the result of the combined effects of aeolian, fluvial, and other surface processes. Sediment grain shape serves as an important carrier of information on these surface processes.
ZHANG Deyang(张德阳) +2 more
doaj +1 more source