摘要
通过对乌江流域碳酸盐岩区不同立地条件下立地因子及土壤性质特征的综合调查，研究了岩溶宜林石质山地的主要立地因子与土壤特征的关系，结果表明，直接影响碳酸盐岩区立地质量的主导因子为①大地貌、气候及海拔。是制约岩溶山地的水热条件、适宜树种及自然植被恢复方式的主导因子；②岩石组性质。影响立地的中小地貌形态、土壤性质及分布规律、水文地质特征；③地形坡度。影响土体分布状况和基岩裸露率及造林施工的困难程度；④土体连续性。直接体现了立地质量，分为连续土、半连续土、零星土、岩漠。
Based on the investigation of each site factor and soil character in carbonate area of Wujiang River Watershed, studied the relationship of the factors, the results are as follows. great geomaphice,climate and altitude are the mainly factors of affecting conditions of water, heat, suitable type of trees and ways of recovering of natural vegetation; the character of rocky group controls the land form, soil character,soil distribution, hydrographical condition and classification of small site which is divided into 4 group;angle of slope affected the distribution of soil body, exposing rate of rock, and difficulty of plantation,it can be divided into 4 kinds of slope; soil continuum means the quality of site,it can be divided into continuous, half continuous, odd, rock desert.
出处
《山地农业生物学报》
1999年第4期209-215,共7页
Journal of Mountain Agriculture and Biology
关键词
乌江流域
岩溶
宜林石质山地
立地因子
森林生境
Wujiang River WatershedKarst rocky mountain for forestsite factorsite(forests)
