Abundant moisture, moderate to high temperatures, and variegated physiography support luxuriant and highly diversified plant growth. Broad-leaved evergreen forests, intermixed with coniferous and deciduous trees, originally covered much of the land, while a more tropical type of vegetation predominates on the south coast. With the exception of the more remote mountainous areas, much of this natural vegetation cover has been stripped by fire and by the use of trees and shrubs for fuel. This circumstance, together with millennia of uninterrupted cultivation, has resulted in much of the natural vegetation now taking the form of secondary forests of hardwoods and horsetail pine. On the more severely eroded hills, coarse grasses and ferns have taken hold. Bamboo groves, varying greatly in height and extent, are widespread, particularly in humid river valleys. The most productive and least disturbed forests cover the mountainous areas. Certain trees, notably camphor, have been revered and protected for centuries and are found around cultivated fields. Since 1949, massive afforestation programs have been undertaken. In the highlands, where coniferous and deciduous species thrive together, the broad-leaved evergreen forests are characterized by tropical oaks, tan oaks (oaks that yield tannin), and chestnut oaks (or chinquapins). The more significant coniferous species of economic value include horsetail pine, Chinese fir, and Chinese hemlock. Some of the species of cypress and pine are little known outside China. Truly tropical monsoon rainforests are common in the south.

Among the mammals found in Guangdong are many tropical bats, and squirrels, mice, and rats of many species are abundant. Insectivores are generally more diverse than in other regions of China, and carnivores are exemplified by civet cats and small-clawed otters. Types of birds vary according to habitat. In the tropical forest, wildfowl, peacocks, and silver pheasants are common. Reptiles are more restricted in distribution. Guangdong has a number of pit vipers, including the huge and deadly Chinese vipers and bamboo vipers, as well as nonpoisonous pythons, which can grow up to 20 feet (6 metres) long. Insects of every description—crickets, butterflies, dragonflies, grasshoppers, cicadas, and beetles—are found in profusion. Amphibians include ground burrowers and many types of frogs and toads. Tigers, rhinoceroses, leopards, wolves, bears, and foxes once roamed the hills of Guangdong, but their numbers have been decimated by forest fires, persistent deforestation, and hunting; they are now considered to be nearly extinct in the area. In the tropical monsoon forest, however, a great number of animals, many of which live in the trees, still remain. In addition, dozens of natural protection zones have been set up in the province to provide refuge for those endangered species.

Population composition

Guangdong is populated largely by the Han (Chinese), the other ethnic minorities totaling only a tiny portion of its population. The Yao are the largest ethnic minority in Guangdong and are concentrated principally near its northwestern border in autonomous counties. A heavily Sinicized group, the Zhuang, live in northwestern Guangdong in Lianshan. Another group, the She, live in the northeast and in the north around Shaoguan, notably in an autonomous county west of the city. The Jing were transferred to Guangxi in 1965, when the multinational Dongxing (now Fangcheng) autonomous county in extreme southwestern Guangdong changed its provincial jurisdiction. The so-called Boat People—the Tan (Dan) or Tanka (Danjia in the Cantonese language)—are not officially designated as a national minority. Whereas some scholars believe they are descendants of aboriginal people, others regard them simply as a people who live on boats and speak Cantonese. They generally live along the rivers in the Xi-Pearl basin as well as along the coast.

The relative ethnic homogeneity prevailing in Guangdong stands in contrast to the great diversity of dialects and languages. By far the most important of these is Cantonese, spoken in central and western Guangdong. Once thought to be a dialect of Chinese, Cantonese is now considered to be a language in its own right. There is considerable variety among the Cantonese speakers, but the form spoken in Guangzhou is generally regarded as the standard. Hakka is another important language, which predominates in the north and northeast areas of the province. Offshoots of Hakka are common in central Guangdong. A third major language, Southern Min (Minnan), is spoken mostly along an eastern coastal area centred on Shantou (Swatow).

In addition to these Sinitic languages, there are the languages and dialects of the ethnic minorities. New scripts have been created for a number of these languages. They not only are taught in minority-area schools but also are used in conjunction with Chinese in official communications in minority communities.

Ancestor worship, folk religions, and the institutional religions of Daoism, Buddhism, Christianity, and Islam coexist in the province, as they do in most places in China. Among these religions, ancestor worship has the most pervasive influence. Although some folk religions are national in outlook, others are of a more regional or local character, such as the worship of Tianhou Shenmu, the goddess of fishing and navigation. With the possible exception of Muslims and Christians, people in Guangdong are polytheistic, visiting temples or priests of different faiths as occasions demand.