Effects of Water and Energy on Plant Diversity along the Aridity Gradient across Dryland in China

被引：31

作者：

Yao, Shuran ^{[1
]}

Akram, Muhammad Adnan ^{[1
]}

Hu, Weigang ^{[1
]}

Sun, Yuan ^{[1
]}

Sun, Ying ^{[1
]}

Deng, Yan ^{[1
,2
]}

Ran, Jinzhi ^{[1
]}

Deng, Jianming ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China

[2] Southwest Forestry Univ, State Coll Forestry, Bailongsi 300, Kunming 650224, Yunnan, Peoples R China

来源：

PLANTS-BASEL | 2021年 / 10卷 / 04期

基金：

中国国家自然科学基金;

关键词：

aridity gradient; dryland; plant diversity; plant lifeforms; water-energy dynamics; SPECIES RICHNESS; EPHEMERAL PLANTS; CLIMATIC GRADIENTS; DYNAMICS; GROWTH; PHYLOGEOGRAPHY; TEMPERATE; RESPONSES; PATTERNS; DENSITY;

D O I：

10.3390/plants10040636

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Plants need water and energy for their growth and reproduction. However, how water and energy availability influence dryland plant diversity along the aridity gradient in water-limited regions is still lacking. Hence, quantitative analyses were conducted to evaluate the relative importance of water and energy to dryland plant diversity based on 1039 quadrats across 184 sites in China's dryland. The results indicated that water availability and the water-energy interaction were pivotal to plant diversity in the entire dryland and consistent with the predictions of the water-energy dynamic hypothesis. The predominance of water limitation on dryland plant diversity showed a weak trend with decreasing aridity, while the effects of energy on plants were found to be significant in mesic regions. Moreover, the responses of different plant lifeforms to water and energy were found to vary along the aridity gradient. In conclusion, the study will enrich the limited knowledge about the effects of water and energy on plant diversity (overall plants and different lifeforms) in the dryland of China along the aridity gradient.

引用

页数：15

共 56 条

[1] Convergent Variations in the Leaf Traits of Desert Plants [J].