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神农架自然保护区位于湖北省西部,是大巴山山脉向东南的延伸部分。全保护区面积约3250平方公里,属北亚热带与暖温带的过渡地区。年降水量在800-2500mm之间。夏季降水一般在300-700mm,占全年降水量的39-45%,最大暴雨日降水量可达171.0mm。该地区地质地貌复杂,母岩种类较多。由于地势陡峭,风化强烈及冲刷、搬运频繁,形成了该地区不同的母质和母质层次,影响了该地区的土壤构型和土壤性质。该地区生物资源丰富,既是自然保护区,也是发展林特产品的良好基地。1986年7-8月份,我们从东北向西南(简称北线,代号N),另从南向北(简称南线,代号S),进行该区的土壤及其环境条件的考察,并采土样分析研究。本文仅就土壤物理性质研究结果报导如下。
Shennongjia Nature Reserve is located in western Hubei Province, Daba Mountains is an extension of the southeast. The total area of about 3250 square kilometers of protected area, a transition zone between the northern subtropical and warm temperate zone. Annual precipitation between 800-2500mm. Summer precipitation is generally 300-700mm, accounting for 39-45% of the annual rainfall, the maximum rainfall day up to 171.0mm. The area is complex in geology and geomorphology with many types of parent rocks. Due to steep terrain, strong weathering, erosion and frequent handling, different layers of parent material and parent material have been formed in the area, affecting the soil configuration and soil properties in the area. The area is rich in biological resources, is both a nature reserve and a good base for developing Lint products. From July to August 1986, we investigated the soil and its environmental conditions from northeast to southwest (North Line, code N) and from south to north (South line, code S) Sample analysis and research This article reports on the results of the study of soil physical properties are as follows.