Positive tree species are mostly found in foothills, forest margins, valleys, beaches, streams and cliff crevices, forming small pure forests or mixed with other tree species.
Strong adaptability, like calcium, like being born in limestone mountains, but also growing in granite and sandstone areas. Drought-tolerant and barren, with well-developed roots, it often hovers and stretches between cracks in rocks. Medium growth rate, strong germination and long life. There are thousands of ancient trees left in temples in Shandong and other places.
Light-loving, drought-resistant, saline-alkali resistant, barren soil resistant, drought-resistant, cold-resistant, without freezing buds at -35℃. Not waterproof and moisture-proof. Developed root system, strong resistance to harmful gases.