3.1 Paddy land use change from the 1980s to 2000 
Based on the 1:100 000 land use vector datasets for the years 
1980s and 2000 (RESDC, 2011), the land use change map for 
paddy fields (Fig. 2) was generated. Most of the counties in the 
SJP show a high increase in paddy land use except for Raohe 
County with a decrease and Muling County with no change. 
Almost all the counties in the northern part of the SJP show an 
increase of more than 100 96. In Suibin and Jixian County, the 
increment is even more than 20 times. In the southern part of 
the SJP, most counties show an increase of less than 50 %. In 
the counties of Yilan, Shuanyashan, Boli and Qitaihe, an 
increase between 50 and 100 % occurred. In Hulin County, also 
located in the southern part, the increase even exceeds 1 000 %. 
  
"SESS X 180°E 7 131°E 152‘E 133 E 134°E 135°E 
7^ Change in paddy land use (%): 1980s to 2000 
: b 
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48"N4 
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48*N4 
       
Russia 
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1: Jiamusi 
  
  
  
Muling 9 2: Shuangyashan 
: P 50% 3: Qitaihe 
; . - 100% 
. à s s Data Source: 
: 7) - 1.000 % NGCC, Beijing, China, 2011 
basen ; 3 > 1000-2000 % CBSED, Harbin, China, 2011 
B LRR, Russia, 2011 
Will - 2000 -4500* Map Author: Q. Zhao, 2012. 44M 
Jilin Province ur mis 
130°E ^ 131°E 132°E 133°E 134° 135°E) 
  
Figure 2. Change in paddy land use (%) from the 1980s to 2000 
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012 
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia 
    
  
  
  
  
  
  
  
   
   
  
   
  
   
  
  
  
  
   
    
  
   
   
  
  
  
  
  
   
    
      
   
   
3.2 Land use change for representative counties from the 
1980s to 2000 
Table 2 shows the land use change for the two periods from the 
1980s to 1995 and from 1995 to 2000. Considering the whole 
SJP, paddy land area decreased by 28.3 % in the first period, 
and sharply increased by 157.2 % in the second period. On the 
contrary, the area of dryland increased by 14.6 % in the first 
period and decreased by 7.7% in the second period. The 
grassland at first dramatically decreased by 45% and then 
increased only by 2.4 %. The area of wetland decreased all over 
the years, with a decline of more than 10 % for each period. The 
other land use classes did not change as much in total. For 
example, in Fujin County, a 1.6-fold increase for paddy land 
and 9.5 % for dryland occurred from 1995 to 2000. On the other 
hand, both grassland and wetland sharply decreased in these 
years. In Yilan County, from 1980s to 1995, dryland increased 
and paddy fields decreased. At the same time, grassland 
decreased by more than half whereas wetland slightly increased. 
For the following five years until 2000, paddy fields show a 
high increase. Dryland decreased, accompanied by a more than 
10 % decrease of wetland and 9.9 % increase of grassland. 
3.3 Total sown area (TSA) from 1950 to 2010 
The development of the TSA for the non-farm area in the SJP 
during the last 60 years is shown in Fig. 3. Overall, the TSA 
increased strongly from 1950 to 2010. In 1950, the TSA was 
less than 20 000 ha in most counties. However, until 2010 it 
increased to more than 150 000 ha in one third of the counties. 
In the first 15 years, most of the counties showed an increase. In 
1965, the TSA in 19 counties was already more than 20 000 ha. 
In e.g. Baoging County, the TSA increased by more than 3.5 
times. In the following 15 years from 1965, the increase was 
less pronounced. Many counties, e.g. Luobei, Suibin and 
Mishan County, even show a loss in TSA. Although it is not 
clearly to be seen in the map due to the classification, the TSA 
rose from 1980 to 1994. From 1994 to 2004, the TSA in each 
county increased rapidly. It reached more than 150 000 ha in 
Fujin, Baoqing, Huanan and Yilan County. From 2004 to 2010, 
the TSA continued to increase strongly. Now, in more than a 
half of the SJP counties, the TSA exceeds 70 000 ha. 
  
  
Land use change (%) 
Paddy field Dryland Grassland Wetland Others 
Time 1980s 1995 1980s to 1995 1980s to 1995 1980s 1995 1980s to 1995 
to 1995 to 2000 1995 to 2000 1995 to 2000 to 1995 to 2000 1995 to 2000 
Baoging -88.5 1097.7 73.8 -40.3 -18.3 -17.0 -24.9 -11.2 -1.1 -3.8 
Luobei 216.9 550.7 15.4 -28.6 -47.5 15.5 -27.3 -8.3 0.3 -3.1 
Mishan -56.6 185.4 24.3 -13.5 -2.9 -38.2 -7.4 -14.9 3.5 -6.6 
Fuyuan 6.5 161.9 61.5 9.5 -89.3 -87.6 -7.3 -7.4 10.7 -1.4 
Hulin 18.6 145.7 45.0 -4.9 -70.3 33.5 -3.0 -22.2 7:5 -2.2 
Yilan -14.9 80.5 11.6 -10.0 -54.9 9.9 4.2 -11.3 -0.6 -1.0 
Huachuan 61.0 732 -7.3 -12.7 280.6 -6.0 4.6 -56.3 -16.1 -45 
Tangyuan -13.5 62.4 8.9 -14.8 16.6 -37.7 70.9 -41.5 -9.8 92 
Fujin 99.1 43.3 3.6 -0.2 -29.8 23.6 -8.3 -3.8 1.3 -0.7 
Youyi 1204.4 42.4 2.6 3.1 33.9 25.3 -45.0 -443 5.8 -0.5 
Muling -22.3 28.7 -32 10.4 3.6 -2.5 no wetland no wetland 1.8 3.7 
Total change -28.3 157.2 14.6 “7,7 -45.0 2.4 -11.3 -10.6 1.6 -3.9 
  
Table 2. Land use change (?6) for selected classes from the 1980s to 2000 in the SJP for the representative counties 
  
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