id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
asir-15777	Qi, Liyan; Zhang, Yuntao; Zhang, Xuliang	Protecting Heritage Trees in Weifang City, Shandong Province, Northern China	2023	17	.pdf	application/pdf	7100	303	50	The Individuals, Density and Individuals per Capita of Heritage Trees in the County-level Administrative Regions in Weifang City Administrative region Acreage (km2) Population (×104capita) Individuals Density (individuals/km2) Individuals per capita (individuals/1×104capita) Weicheng District 270 35.8 33 0.12 0.92 Hanting District 1301 40.0 12 0.01 0.30 Kuiwen District 168 55.2 20 0.12 0.36 Fangzi District 896 55.4 6 0.01 0.11 Changyi City 1628 58.7 30 0.02 0.51 Shouguang City 1990 110.3 300 0.15 2.72 Qingzhou City 1569 95.5 123 0.08 1.29 Anqiu City 1712 97.6 84 0.05 0.86 Zhucheng City 2151 110.9 94 0.04 0.84 Gaomi City 1527 89.6 15 0.01 0.17 Linqu County 1831 92.6 147 0.08 1.59 The distribution of heritage trees is different in different areas because fewer heritage trees in the four urban districts and two county-level cities (Changyi City and Gaomi City) were protected compared to the other four county-level cities and Linqu County as the four urban districts and two county-level cities are traditional industrial area and underwent urbanization and industrialization early. There are some challenges in protecting heritage trees, such as urbanization, habitat deterioration, natural disasters, anthropic activities, health decline, and inadequate management.	cache/asir-15777.pdf	txt/asir-15777.txt