کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
865866 | 909685 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spatial Heterogeneity of Vegetation in China
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spatial Heterogeneity of Vegetation in China Spatial Heterogeneity of Vegetation in China](/preview/png/865866.png)
چکیده انگلیسی
The spatial heterogeneity and ecological characteristics of 74 vegetation types and the lack of vegetation type within the 9.6 million km2 of Chinese territory were studied using data from the China vegetation map. The analysis used 877 large quadrats 10 mmÃ10 mm (actual size 100 kmÃ100 km), which covered about 8.77 million km2. Each large-quadrat was divided into four small 5 mmÃ5 mm quadrats (actual size 50 kmÃ50 km). The frequency of occurrence of all vegetation types was recorded in each small quadrat. The survey using the Shiyomi method of vegetation analysis based on the beta-binomial distribution was adopted to describe the frequency of occurrence and spatial heterogeneity for each kind of vegetation. The weighted average heterogeneity of all the vegetation types in the landscape provides a measure of the landscape level heterogeneity which describes the spatial intricacy of the existing vegetation composition. The maximum spatial vegetation heterogeneity was 0.8620 in the frigid-temperate coniferous forest of Larix (V1), which dominates cold moist northeast China. The minimum spatial heterogeneity with a low occurrence was the Caragana tibetica in the gravel desert in the western Yellow River Hetao area. The minimum occurrence with a low spatial heterogeneity was the Monsoon rainforest on rock in Guangxi and Yunnan Provinces. The vegetation types on the Qing-Zang Plateau were found to be representative of Chinese vegetation because of the very high occurrence and spatial heterogeneity of these vegetation types. The weighted average of the heterogeneity was 0.677, while the vegetation diversity index was 3.29.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tsinghua Science & Technology - Volume 12, Issue 4, August 2007, Pages 424-434
Journal: Tsinghua Science & Technology - Volume 12, Issue 4, August 2007, Pages 424-434
نویسندگان
Huang (é»å¤§æ), Wang (çæ±ç), Shiyomi Masae, Liu (æ³å°å¦®), Song (å®ç¾æ), Chen (é ä¿), Shigeo Takahashi, Hori Yoshimichi, Yamamura Yasuo,