Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simulation of Urban Expansion and Farmland Loss in China by Integrating
  Cellular Automata and Random Forest   China has encountered serious land loss problems along with urban expansion
due to rapid urbanization. Without considering complicated spatiotemporal
heterogeneity, previous studies could not extract urban transition rules at
large scale well. This study proposed a random forest algorithm (RFA) based
cellular automata (CA) model to simulate China's urban expansion and farmland
loss in a fine scale from 2000 to 2030. The objectives of this study are to 1)
mine urban conversion rules in different homogeneous economic development
regions, and 2) simulate China's urban expansion process and farmland loss at
high spatial resolution (30 meters). Firstly, we clustered several homogeneous
economic development regions among China according to official statistical
data. Secondly, we constructed a RFA-based CA model to mine complex urban
conversion rules and carried out simulation of urban expansion and farmland
loss at each homo-region. The proposed model was implemented on Tianhe-1
supercomputer located in Guangzhou, China. The accuracy evaluation demonstrates
that the simulation result of proposed RFA-based CA model is more in agreement
with actual land use change. This study proves that the primary factor of
farmland loss in China is rapid urbanization from 2000, and the farmland loss
rate is expected to slow down gradually and will stabilize from 2010 to 2030.
It shows that China is able to preserve the 1.20 million km farmland without
crossing the "red line" within the next 20 years, but the situation remains
severe.

8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn