【摘 要】
:
In recent years, because of increasing human activities, ecosystems have been substantially disturbed and their service functions have been greatly compromised. Based on the effect of land use changes
【出 处】
:
Chinese Geographical Science
论文部分内容阅读
In recent years, because of increasing human activities, ecosystems have been substantially disturbed and their service functions have been greatly compromised. Based on the effect of land use changes on the major ecosystem services, we estimated the e
其他文献
The cold-island effect of urban wetlands has received increasing attention in recent years due to its important role in the alleviation of urban heat islands.Hangzhou,a representative rapidly urbanizi
The primary object of this paper is to examine the spatial-temporal pattern evolution of manufacturing geographical agglomeration of the old industrial base.Industrial spatial agglomeration index and
Denitrification is an important process of nitrogen removal in lake ecosystems.However,the importance of denitrification across the entire soil-depth gradients including subsurface layers remains poor
A new form of producing and sharing knowledge has emerged as an international(United States of America,Asia,and Europe) research collaboration,known as the Long-Term Ecological Research(LTER) Network.
Deposited in plant cells and their intercellular space,phytoliths,a special form of silica,could be used to determine information on plant structure and physiology especially their size and content.Wi
具有辐射纹的撞击坑是一种特殊的撞击构造,只形成于某些区域一定规模的撞击事件.由于大部分撞击事件都是斜撞击,本文以Messier复合撞击坑为例研究并模拟了斜撞击抛射和辐射纹形成物理过程.Messier复合撞击坑包含Messier撞击坑和Messier A撞击坑,是月球上典型的小角度斜撞击形成的撞击坑.对Messier复合撞击坑的对称性分析发现,Messier A撞击坑对称轴相对于Messier撞击坑
封面图片为全球农情遥感速报系统CropWatch生成的全球主要农业生产国2014年7月至10月最佳植被状况指数图(a)与耕地种植状况图(b),反映出作物长势与耕地利用状况的空间分布特征。CropWatch系统由中国科学院遥感与数字地球所创建,该系统以遥感数据为主要数据源,结合有限的地面观测数据,构建了不同时空尺度的农情遥感监测多层次技术体系,可实现全球尺度,洲际主产区、31个主要农业生产国以及9个
Human activities and climate changes are deemed to be two primary driving factors influencing the changes of hydrological processes, and quantitatively separating their influences on runoff changes wi
Understanding the underlying processes of how communities are structured remains a central question in community ecology. However, the mechanisms of the soil animal community are still unclear, especi
The Songnen Plain has a typical soda-saline soil, which often shrinks and cracks under natural conditions during water evaporation. This study aims to analyze the relationships between the crack chara