Spatio-temporal variations in soil moisture and physicochemical properties of a typical semiarid sand-meadow-desert landscape as influenced by land use
Spatio-temporal variations in soil moisture and physicochemical properties of a typical semiarid sand-meadow-desert landscape as influenced by land use
复制标题
土地利用影响典型半干旱沙草甸荒漠景观土壤水分和理化性质的时空变化
DOI：
10.5194/hess-15-1865-2011
复制
发表时间：
2011-01-01
影响因子：
6.3
通讯作者：
Luo, Y.
中科院分区：
文献类型：
--
作者：
Duan, L.;Liu, T.;Luo, Y.
抽象的。了解土地覆盖变化与水文条件(如土壤水分)和土壤物理化学性质(如土壤细小颗粒和养分)的变化之间的相互关系，对于维持半干旱土地(如中国的科尔沁沙地)脆弱的水文和环境条件至关重要，但现有文献缺乏。这项研究的目的是研究：(1)半干旱地区土壤水分和理化性质的时空变化；(2)土地覆盖变化对这些变化的影响。利用科尔沁沙地9.71km2观测区采集的数据，对土壤水分和理化性质的时空变化进行了目测和统计分析。结果表明，研究区土壤水分和理化性质受当地地形、土壤质地、植被密度和人类活动的影响。长期的农业复垦使土壤水分降低了23%以上，且显著(p
Abstract. A good understanding of the interrelations between land cover alteration and changes in hydrologic conditions (e.g., soil moisture) as well as soil physicochemical properties (e.g., fine soil particles and nutrients) is crucial for maintaining the fragile hydrologic and environmental conditions of semiarid land, such as the Horqin Sandy Land in China, but is lacking in existing literature. The objectives of this study were to examine: (1) spatio-temporal variations of soil moisture and physicochemical properties in semiarid land; and (2) how those variations are influenced by land cover alteration. Using the data collected in a 9.71 km2 well-instrumented area of the Horqin Sandy Land, this study examined by visual examination and statistical analyses the spatio-temporal variations of soil moisture and physicochemical properties. The results indicated that for the study area, the soil moisture and physicochemical properties were dependent on local topography, soil texture, vegetation density, and human activity. Long-term reclamation for agriculture was found to reduce soil moisture by over 23 % and significantly (p-value