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| Evaluation index system of land ecological security in the Pearl River Delta urban agglomeration |
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| Abstract: |
| Based on consulting extensive literature，this study concluded the most acceptable indicators from the current evaluation of land ecological security，then built the evaluation indicator system of land ecological security in the Pearl River Delta urban agglomeration. Ordered by the systematical and practical principle，18 indicators were selected as the evaluation of land ecological security indicators from the original 29 indicators. Principal component analysis on the 18 indicators was carried out with the data of 2011，lately the indicators system in the Pearl River Delta was built，along with which was the evaluation on the land ecological security of 2011 in the same area. The results showed that:the evaluation indicator system of land ecological security in the Pearl River Delta consisted of 14 main indicators; the result of the evaluation of land ecological security in the Pearl River Delta in 2011 was as following：Shenzhen（11.49）＞ Guangzhou（4.25）＞ Zhuhai（1.18）＞ Dongguan（0.47）＞ Zhongshan（-0.93）＞ Zhaoqing（-2.63）＞Huizhou（-3.38）＞ Foshan（-5.06）＞ Jiangmen（-5.12）. |
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