کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4380316 1303984 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes in landscape pattern of alpine wetlands on the Zoige Plateau in the past four decades
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Changes in landscape pattern of alpine wetlands on the Zoige Plateau in the past four decades
چکیده انگلیسی

Based on RS, GIS and Apack software, the indices of landscape pattern such as landscape area index, landscape diversity index and landscape fragmentation index were chosen in order to describe changes in the spatial pattern of alpine wetland landscape on the Zoige Plateau during 1966–2000. Results showed that alpine wetland landscape was characteristic of marsh wetlands, which had the biggest patch number and the largest area. The alpine wetland landscape had higher spatial heterogeneity. The largest area appeared in Zoige County with the highest wetland ratio; comparatively, Aba County and Luqu County had much lower wetland ratio. The total area of alpine wetland landscape decreased rapidly during 1966–1986, but it began to increase after 1986. The wetland landscape area shrank by 59857.83 hm2 during 1966–2000. The alpine wetland landscape showed the characteristics of concentrated distribution in the past four decades, with higher convergence and dominance indices. The centroid of wetland landscape moved 12.54 km in the northwest direction firstly, 11.33 km in the southeast direction, and then 1.1 km in the north direction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Ecologica Sinica - Volume 28, Issue 5, May 2008, Pages 2245-2252