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土壤水分时空变异及其与环境因子的关系

邱扬1;傅伯杰2;王军1,3;张希来4;孟庆华5   

  1. 1北京师范大学地理学与遥感科学学院,北京 100875;
    2中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京 100085;
    3国土资源部土地整理中心, 北京 100035;
    4陕西省国土资源厅土地整理中心, 西安 710045;
    5国家林业局林业规划设计院, 北京 100055
  • 收稿日期:2006-07-05 修回日期:2006-11-06 出版日期:2007-01-10 发布日期:2007-01-10

Spatiotemporal variation of soil moisture and its relation to environmental factors

QIU Yang1;FU Bo-jie2;WANG Jun1,3;ZHANG Xi-lai4; MENG Qing-hua5   

  1. 1School of Geography, Beijing Normal University, Beijing 100875, China;
    2State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences,
    Chinese Academy of Sciences, Beijing 100085, China;
    3Land Consolidation and Rehabilitation Center, Ministry of Land and Resources, Beijing 100035, China;
    4Land Consolidation and Rehabilitation Center,Department of Land and Resource of Shaanxi Province,
    Xi’an 710045, China;
    5Academy of Forest Inventory and Planning, State Forestry Administration, Beijing 100055, China
  • Received:2006-07-05 Revised:2006-11-06 Online:2007-01-10 Published:2007-01-10

摘要: 土壤水分的时空变异是指在一定的景观内,不同时间、地点和土层的土壤水分特征存在明显的差异性和多样性。土壤水分时空变异是由多重尺度上的土地利用(植被)、气象(降雨)、地形、土壤、人为活动等诸因子综合作用的结果,但就其某一具体地区而言存在着重点尺度和主控因子,土壤水分时空变异的重点尺度与主控因子的时空关系因时间、空间和尺度而异。本文综述了土壤水分(尤其是黄土高原地区)的时空变异与其环境因子时空关系的研究进展,并提出了广泛开展多重时空尺度上土壤水分的时空变异与其诸因素的时空关系,研究土壤水分时空变异性的尺度转换规律,确定重点尺度及其相应的主控因子。

关键词: 森林景观, 几何建模, 林分生长模型, 地理信息系统

Abstract: Spatiotemporal variation of soil moisture represents the differentiation and diversity of soil moisture properties at different scales of time and space, which is related to the joint effects of several environmental factors, including vegetation, land use, meteorological factors (e . g . , rainfall), topography and soil at multiple scales. However, the key scale and dominant factors are differed with different time, space and scale. This paper reviewed the studies on the spatiotemporal variation of soil moisture and its relation to the environmental factors, with the focus on the studies of the Loess Plateau in China. The issues worthy to be further studied were also put forward, including the spatiotemporal variation of soil moisture and its relation to environmental factors at multiple-scales, scaling-up or scaling-down of soil moisture spatiotemporal differentiation, and determination of key scales and corresponding affecting factors.

Key words: Forest landscape, Geometrical modeling, Stand growth model, GIS