资源与生态学报(英文版)
資源與生態學報(英文版)
자원여생태학보(영문판)
JOURNAL OF RESOURCES AND ECOLOGY
2014年
3期
244-252
,共9页
MODIS%粮食作物%时空分布格局%西辽河流域%玉米%小麦%大豆
MODIS%糧食作物%時空分佈格跼%西遼河流域%玉米%小麥%大豆
MODIS%양식작물%시공분포격국%서료하류역%옥미%소맥%대두
MODIS%grain crops%temporal and spatial distribution pattern%West Liaohe River basin%maize%soybean%wheat
研究以西辽河流域为案例区,以MODIS遥感数据为基础,选取2000、2005和2010年时间点,利用NDVI时间序列信息,结合西辽河流域不同作物物候历,运用决策树提取模型,获取西辽河流域春玉米、春小麦和大豆等主要作物的空间分布信息,定量揭示了10年间西辽河流域主要粮食作物的时空分布特征。研究表明:(1)2010年西辽河流域主要粮食作物播种面积为11965.08km2,其中春玉米播种面积约占流域主要粮食作物的92.28%,集中在西辽河流域下游地区;春小麦播种面积占比3.14%,以西辽河流域中游面积最大;大豆播种面积占比4.58%,以西辽河上游流域面积最大。(2)2000-2005年西辽河流域主要粮食作物播种面积大幅增加,涨幅达29.77%,集中在西辽河流域下游地区。其中,春玉米播种面积增长38.99%,春小麦播种面积减少39.04%,大豆播种面积增长21.27%。(3)2005-2010年西辽河流域主要粮食作物播种面积增长缓慢,涨幅为5.18%,集中在西辽河流域下游地区。春玉米播种面积呈现增加趋势,春小麦呈现减少趋势,大豆呈减少趋势。
研究以西遼河流域為案例區,以MODIS遙感數據為基礎,選取2000、2005和2010年時間點,利用NDVI時間序列信息,結閤西遼河流域不同作物物候歷,運用決策樹提取模型,穫取西遼河流域春玉米、春小麥和大豆等主要作物的空間分佈信息,定量揭示瞭10年間西遼河流域主要糧食作物的時空分佈特徵。研究錶明:(1)2010年西遼河流域主要糧食作物播種麵積為11965.08km2,其中春玉米播種麵積約佔流域主要糧食作物的92.28%,集中在西遼河流域下遊地區;春小麥播種麵積佔比3.14%,以西遼河流域中遊麵積最大;大豆播種麵積佔比4.58%,以西遼河上遊流域麵積最大。(2)2000-2005年西遼河流域主要糧食作物播種麵積大幅增加,漲幅達29.77%,集中在西遼河流域下遊地區。其中,春玉米播種麵積增長38.99%,春小麥播種麵積減少39.04%,大豆播種麵積增長21.27%。(3)2005-2010年西遼河流域主要糧食作物播種麵積增長緩慢,漲幅為5.18%,集中在西遼河流域下遊地區。春玉米播種麵積呈現增加趨勢,春小麥呈現減少趨勢,大豆呈減少趨勢。
연구이서료하류역위안례구,이MODIS요감수거위기출,선취2000、2005화2010년시간점,이용NDVI시간서렬신식,결합서료하류역불동작물물후력,운용결책수제취모형,획취서료하류역춘옥미、춘소맥화대두등주요작물적공간분포신식,정량게시료10년간서료하류역주요양식작물적시공분포특정。연구표명:(1)2010년서료하류역주요양식작물파충면적위11965.08km2,기중춘옥미파충면적약점류역주요양식작물적92.28%,집중재서료하류역하유지구;춘소맥파충면적점비3.14%,이서료하류역중유면적최대;대두파충면적점비4.58%,이서료하상유류역면적최대。(2)2000-2005년서료하류역주요양식작물파충면적대폭증가,창폭체29.77%,집중재서료하류역하유지구。기중,춘옥미파충면적증장38.99%,춘소맥파충면적감소39.04%,대두파충면적증장21.27%。(3)2005-2010년서료하류역주요양식작물파충면적증장완만,창폭위5.18%,집중재서료하류역하유지구。춘옥미파충면적정현증가추세,춘소맥정현감소추세,대두정감소추세。
Here, we quantitatively determine temporal and spatial distribution characteristics of main grain crops inthe West Liaohe River basin,Inner Mongolia, China,from 2000 to 2010 based on MODIS remote sensing data and NDVI time series information for the years 2000, 2005 and 2010. Phenological calendars and a decision-making tree extraction model were also usedto obtain spatial distribution information of spring maize, spring wheat and soybean. We found that in 2010, the sown area of the main grain crops inthe West Liaohe River basin was 11 965.08km2, of which, the sown area for spring maize accounted for 92.28%and was concentrated in the lower reaches of the region. Spring wheat accounted for 3.14% and was mainly in the middle reaches. Soybean accounted for 4.58% and was predominantly in the upper reaches. From 2000 to 2005, the sown area of these grain crops inthe West Liaohe River basin grew by 29.77%, mainly in the lower reaches:spring maize grew by 38.99%, spring wheat by 39.04% and soybean by 21.27%. From 2005 to 2010, growth in the sown area of these crops was slow (5.18% growth) and mainly in the lower reaches of the basin. The sown area of spring maize increased, but decreased for both spring wheat and soybean.