摘要
南岭山地是国家25个重点生态功能区之一,但其土壤保持功能较弱。文章以南岭国家级自然保护区及其周边地区为例,分析气候、土壤、地形、植被、人类活动等因素对土壤保持的影响。研究发现,该区域兼有水力侵蚀和冻融侵蚀;大东山花岗岩风化的南岭土壤易受流水侵蚀;山体高差较大、坡度较陡且水系发育,导致水流冲刷能力极强;因此该地非常容易诱发水土流失。而不合理的人类活动,已对局部造成严重的水土流失。保护区的森林植被使原本易受侵蚀的南岭土壤得到保护,使南岭的生态功能和价值得以体现。因此,南岭的森林植被是控制水土流失的决定性因素,也是实现土壤保持功能最核心的因子。
Nanling Mountain is one of the 25 important ecological functions zones in China. However, its soil conservation function was weak. Taking Nanling National Nature Reserve as an example, this paper analyzed the effects of climate, soil, topography, vegetation and human activities on soil retention. The study found that the region had both hydraulic erosion and freezing and thawing erosion. The weathered Nanling soil of Dadongshan granite was easily eroded by water, and the higher altitude difference and steeper gradient, and the developed water system resulted in the stronger water erosion. Therefore, the soil erosion was easily induced in Nanling Mountain. Besides, unreasonable human activities had caused serious locality soil erosion. The ecological benefts of soil retention of forest vegetation in these areas had preserved the original eroded Nanling soil and realized the ecological function and value of Nanling. Therefore, the forest vegetation in Nanling was the decisive factor to control soil erosion and the core factor to realize soil retention.
作者
温美丽
杨龙
王钧
付淑清
张玉玲
黄钰辉
甘先华
WEN Meili;YANG Long;WANG Jun;FU Shuqing;ZHANG Yuling;HUANG Yuhui;GAN Xianhua(Guangdong Open Laboratory of Geospatial Information Technology and Application/Guangzhou Institute of Geography, Guangzhou, Guangdong 510070,China;Guangdong Province Key Laboratory of Silviculture, Protection and Utilization/Guangdong Academy of Forestry, Guangzhou, Guangdong510520,China)
出处
《林业与环境科学》
2018年第2期123-130,共8页
Forestry and Environmental Science
基金
国家自然科学基金(41301301)
广东省水利科技创新项目(2012-14)
广东南岭国家级自然保护区2013年
2014年中央林业补助资金"数字化监测与管护平台"(DHS15SGHG09093)
广东南岭森林生态系统定位观测研究站运行补助(2017-LYPT-DW-068)
广东省科学院科研平台环境与能力建设专项(2016GDAs PTO301)
广东省科学院实施创新驱动发展能力建设专项资金项目(2017GDASCX-0101)
关键词
植被
南岭山地
土壤侵蚀
影响因素
vegetation
Nanling mountain
soil erosion
infuence factors
