期刊
PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
卷 45, 期 1, 页码 7-19出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0309133320949865
关键词
Critical zone; karst; rock; soil; Southwest China; vegetation
资金
- National Natural Science Foundation of China [41571130044]
This paper systematically reviews the research progress of vegetation ecology associated with bedrock features in the karst CZ in subtropical Southwest China. The differences in soil formation and features between karst and non-karst regions are highlighted, as well as the impact of plant roots development in crevices on water and nutrient absorption, which are crucial for vegetation distribution and growth in the karst CZ. The knowledge about the effects of bedrock-related interactions can guide the implementation of vegetation restoration and the control of further rocky desertification in the subtropical karst CZ.
The role of bedrock geochemistry in vegetation growth within karst areas has been examined in recent works, implying that the approach of the critical zone (CZ) extending from the canopy to the groundwater bottom enhances the understanding of vegetation ecology. In this paper, the research progress of vegetation ecology associated with bedrock features in the karst CZ in subtropical Southwest China is systematically reviewed. There are great differences in soil formation and soil features (water-holding capacity, particle size, and soil chemistry) between karst and non-karst regions, even between dolomite and limestone within a karst region. Water and soil are easily leached due to the connected underground crevices in karst, particularly in limestone-dominated regions, leading to water deficits in karst CZ plants in subtropical Southwest China. The development of plant roots in crevices affects the water and nutrient absorption by plants and microbial activities in the soil, which form the basis for vegetation distribution and growth in the karst CZ. The organic acids from plants also increase weathering rates. As extensive human activities have accelerated vegetation degradation and soil erosion and further led to rocky desertification characterized by increasing areas of rock exposure, state-of-the-art knowledge about the effects of bedrock-associated belowground and aboveground interactions can guide the implementation of vegetation restoration and the control of further rocky desertification in the subtropical karst CZ.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据