【摘要】 以贵州省毕节鸭池中度石漠化示范区为例,根据小生境的形成原因、外部形态特征、面积比例的量化指标等将中度石漠化生境划分成石面、石沟、石隙、台地、石洞、土面6种小生境类型。分别测定了各样地中各小生境的数量和面积比例,并绘制了小生境类型图。利用不同面积比例的样地,研究了不同小生境的分布格局、破碎化、多样性、均匀度、优势度、丰富度以及不同小生境之间的相关关系等;阐明了中度石漠化地区小生境的类型特征及空间格局分布情况。更多还原

【Abstract】 Taking Yachi moderate rocky desertification demonstration area of Bijie in Guizhou Province as an example,the habitats of moderate rocky desertification were divided into 6 types of microhabitats including stone surface,stone gully,stone gap,platform,stone cave and soil surface according to the forming reason,external morphological characteristics and quantitative index of area proportion and so on of microhabitats.The quantity and area proportion of each microhabitat in different sample plots were respectively determined and the microhabitat types maps were drawn.The sample plots with different area ratio were used to study the distribution pattern,fragmentation,heterogeneity,evenness,dominance,richness and the relationships among different microhabitats.The type features and spatial pattern distribution of the microhabitats in moderate rocky desertification areas were enucleated.更多还原