Temporal and Spatial Variation Characteristics of Natural Woodland in the Upper Reaches of the Tarim River in Recent 25 Years

International Symposium on Earth Observation for One Belt and One Road

地球科学;政治学;社会学;经济学

Ran, Q.Y.^1 ; Bai, L.Y.^1 ; Feng, J.Z.^2 ; Zhao, Y.^1 ; Guo, M.Q.^1 ; Wang, K.^1

Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing

100094, China^1

Key Lab of Agri-information Service Technology, Ministry of Agriculture of P. R. China, Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing

100081, China^2

关键词: Agricultural land use;    Dynamic monitoring;    Economic and social benefits;    Human activities;    Natural environments;    Remote sensing images;    Tarim River basin;    Temporal and spatial variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/57/1/012055/pdf
DOI  :  10.1088/1755-1315/57/1/012055

来源: IOP

【 摘 要 】

Natural woodland is highly prized in the Tarim River Basin for its great ecological, economic and social benefits, and it occupies an important position in the "The Belt and Road" strategy, but influenced by the natural environment changes and human activities, the natural woodland has changed in some way. So we implemented the dynamic monitoring of land use and natural woodland in the upper reach of the Tarim River and analyzed their changes, based upon the Landsat remote sensing images of 1990-2015. The results showed that: (1) From 1990 to 2015, the land use degree in the study area showed a significantly increasing trend, yet the land use degree and development intensity stayed in a relatively low level between two counterparts of the natural and agricultural land use. (2) In the past 25 years, the natural woodland area reached higher level in the middle terms (1995-2005), while remained lower at both ends. Additionally, the dynamic changes had a high increase speed during 1990-1995 as well as had a high decrease speed during 2005-2010. (3) The transfer features of natural woodland from 1990 to 2015 was: natural woodland were mainly changed into farmland, and the newly increased natural woodland mainly came from grassland and saline alkali land.