东阿拉善—西鄂尔多斯地区特有濒危植物适生生境景观破碎化与优先保护序的相关分析

Analysis of correlation between landscape fragmentation of suitable habitat and priority protection order of endangered plants peculiar to Eastern Alashan-Western Erdos Area

为了确定东阿拉善—西鄂尔多斯地区特有濒危植物适生生境的破碎化程度与优先保护序之间的关系,以东阿拉善—西鄂尔多斯地区特有濒危植物为研究对象,采用常规的样地调查方法,结合3S技术所获取的相关数据,对特有濒危植物景观粒度、景观破碎指数等指标进行定量计算,分析所得结果并与各物种的优先保护序进行比较,发现各物种适生生境景观破碎化的指标计算结果与物种的优先保护序之间存在着一定密切关系。结果表明,只要依据各物种在该区域的生物学性状与特征,选择适宜的景观破碎公式计算,完全能够准确反映该地区濒危植物的濒危程度。

In order to determine the correlation between the degree of landscape fragmentation and the priority protection order of the endangered plants peculiar to Eastern Alashan-Westem Erdos Area, the endangered plants in Eastern Alashan-Westem Erdos Area were studied with the conventional method of sample investigation. Based on the correlative geographical data obtained with the 3S technology, a quantitative calculation of indices such as landscape size and landscape fragmentation was conducted. A comparative analysis of the calculation results and the priority protection orders of all species found out that there was a certain correlation between the results of the indices of the landscape fragmentation of suitable habitats and the priority protection orders of the species. The findings showed that a suitable landscape fragmentation equation based on the biological properties and characteristics of species in an area could accurately reflect the endangered degree of endangered plants. [ Ch, 6 tab. 14 ref. ]