陆地系统中的露石及其生态作用  

Rock Outcrop and Its Ecological Function in Terrestrial Ecosystem

作　　者：沈有信[1] 赵志猛[1,2] 毕胜春 赵高卷 刘娟 Shen Youxin;Zhao Zhimeng;Bi Shengchun;Zhao Gaojuan;Liu Juan(Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun Yunnan 666303, China;University of Chinese Academy of Sciences, Beijing 100049, China;Shilin Flowers and Trees Co., Ltd., Shilin Yunnan 652208, China)

机构地区：[1]中国科学院西双版纳热带植物园,云南勐仑666303 [2]中国科学院大学,北京100049 [3]石林花木有限责任公司,云南石林652208

出　　处：《地球科学进展》2018年第4期343-349,共7页Advances in Earth Science

基　　金：国家重点研发计划项目"断陷盆地山地土壤流失过程与驱动机制"(编号:2016YFC0502503);国家自然科学基金项目"喀斯特生态系统裸露岩体集水径流及其生态水文效应研究"(编号:41671031)资助~~

摘　　要：露石在陆地生态系统中十分常见,喀斯特生态系统尤为突出。露石在各种生态系统中产生积极或负面的影响,他们承接来自大气的降水(含穿透雨)、干湿沉降,殖居菌、藻、苔藓甚至高等维管束植物,可看成与邻近土壤斑块有鲜明对比的子生态系统。其承接和生产的水分和各种有机物质及无机物质输入邻近土壤斑块,影响水分、营养物质分配,进而对生长于土壤上的各种植物产生影响。定量测量露石承接、分配降水及其内含物的研究较少,评价其生态水文效应的研究更少,严重影响喀斯特生态系统演化机制的阐明与石漠化治理方略的制订。Rock Outcrop（ ROC） is very common in terrestrial ecosystems,typically in karst. ROCs play both positive and negative effects in ecosystems. They may collect precipitation（ including throughfall）,wet/dry deposition,host bacteria,fungi,muss and lichen,and even vascular plants. Both plants and their growing matrixes on ROCs differ greatly from their nearby soil patches. Water and organic and inorganic materials received and produced on ROCs is easily redistributed to their nearby soil patches,put strong influence on water and elements process in soil patches,and thus,affect the plants growing on soil surface. However,quantitative study on water and materials received and produced is scarce,nor on the eco-hydrology effect,thus,blocking the explanation of karst ecosystem succession,block the strategy formulation on countermeasures of karst desertification.

关 键 词：露石 生物植居 生态水文 石漠化 

分 类 号：P951[天文地球—自然地理学]