基于Landsat TM数据的大兴安岭森林景观空间格局及其关联性.

In order to study the formation and maintenance mechanism of forest landscape structure in Daxing’an Mountains, this paper studied the main forest landscape types（Larix gmelinii-Betula platyphylla mixed forest, Natural Larix gmelinii forest, Natural Betula platyphylla forest and Natural coniferous-broadleaved mixed forest） and their spatial distribution by using the first-order conditional intensity kernel density function and second-order conditional intensity O-ring statistic method based on Landsat TM remote sensing images in 2010 and a type of investigation data. The results showed that:（1） The main landscape types in Daxing’an Mountains were natural Larix gmelinii-Betula platyphylla mixed forest, natural Larix gmelinii forest, natural Betula platyphylla forest and natural coniferous-broadleaved mixed forest, accounting for 72.44% of the total area.（2） The results of kernel density analysis showed that spatial distribution of the four main landscape types had obvious aggressive characteristics. The mean patch density was 2.33-6.0 patch/km², and the coefficient of spatial variation was 39.7%-49.5%.（3） The four landscape types showed aggregative distribution on small scale（0-20 km）, and with the increase of scales, they showed random distribution or even distribution. （4） The landscape types showed significant positive or negative correlation on a small scale, but on a large scale they were mostly negative or no correlation. This study is the theoretical basis for sustainable forest management in this area. [ABSTRACT FROM AUTHOR]