decline

	English	Abb.	学名	日本語	略称
1	decline			減退
2	decline			衰退
3	decline in biodiversity			生物多様性の減少
4	decline in crop yield			減収
5	decline of economy			景気の下降
6	dramatically decline			激減
7	Population Decline and the Environment			人口減少と環境
8	price decline			物価下落
9	Program for the Prevention of Forest Decline Caused by Acid Deposition, etc.			酸性雨等森林衰退対策事業
10	tree decline			樹木衰退