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基于長(zhǎng)時(shí)間序列遙感數(shù)據(jù)反演NPP的耕地質(zhì)量評(píng)價(jià)
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國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2017YFF0206801)


Cultivated Land Quality Evaluation Based on Inversion of NPP Based on Longterm Sequence Remote Sensing Data
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    摘要:

    為客觀獲得省域耕地質(zhì)量分布狀況,減少時(shí)間斷點(diǎn)引起的評(píng)價(jià)誤差,,構(gòu)建了一種基于長(zhǎng)時(shí)間序列遙感數(shù)據(jù)反演NPP的耕地質(zhì)量評(píng)價(jià)方法,。首先,在耕地圖斑約束下,,采用時(shí)序LSWI和EVI數(shù)據(jù)識(shí)別水稻和玉米,;然后,采用2000—2010年MODIS的MOD09A1數(shù)據(jù),,結(jié)合氣象站點(diǎn)數(shù)據(jù),,利用VPM模型分別計(jì)算水稻和玉米的凈初級(jí)生產(chǎn)力(NPP),并得到多年NPP均值,,可反映耕地種植作物的常年長(zhǎng)勢(shì),,使用距平分析法消除作物類(lèi)型差異,得到表征耕地質(zhì)量的評(píng)價(jià)結(jié)果,;最后,,以吉林省為研究區(qū),對(duì)本文提出的方法進(jìn)行了實(shí)證與分析,。實(shí)驗(yàn)結(jié)果表明,,長(zhǎng)時(shí)間序列NPP耕地質(zhì)量反演結(jié)果與耕地質(zhì)量利用等別整體空間分布一致。其中,,吉林省中部與北部由于耕地集中連片,,反演結(jié)果準(zhǔn)確。南部山區(qū)耕地斑塊破碎,,耕地與林地混合,,導(dǎo)致反演結(jié)果偏高。本文構(gòu)建的長(zhǎng)時(shí)間序列NPP耕地質(zhì)量評(píng)價(jià)方法對(duì)省域范圍,、集中連片耕地質(zhì)量評(píng)價(jià)具有可行性,,可為我國(guó)耕地質(zhì)量評(píng)價(jià)提供科學(xué)依據(jù)。

    Abstract:

    The evaluation of cultivated land quality can provide support for the management of cultivated land quality. In order to objectively obtain the distribution of cultivated land quality in the province and reduce the evaluation error caused by time breakpoints, an evaluation method of cultivated land quality was constructed based on NPP inversion of longterm sequence remote sensing data. Firstly, rice and maize were identified by using timeseries LSWI and EVI data under the constraints of ploughing maps. Then, the MODIS MOD09A1 data from 2000 to 2010 were used, combined with the meteorological site data, the VPM model was used to calculate the NPP of rice and corn respectively, and the average NPP value was obtained for many years, reflecting the longterm growth of cultivated crops. The anomaly analysis method was used to eliminate the differences in crop types, and the evaluation results of the quality of cultivated land were obtained. Finally, with Jilin Province as the research area, the method proposed was empirically analyzed. The experimental results showed that the longterm sequence NPP cultivated land quality inversion results were consistent with the overall spatial distribution of cultivated land quality utilization. Among them, the inversion results were accurate in the central and northern parts of Jilin Province due to the concentrated arable land. The plaques in the southern mountainous areas were broken, and the cultivated land was mixed with the forest land, resulting in high inversion results. Therefore, the longterm NPP cultivated land quality evaluation method constructed was feasible for the evaluation of provincial and central contiguous arable land quality, and can provide scientific support for the evaluation of cultivated land quality in China.

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馬佳妮,張超,呂雅慧,高璐璐,鄖文聚,朱德海.基于長(zhǎng)時(shí)間序列遙感數(shù)據(jù)反演NPP的耕地質(zhì)量評(píng)價(jià)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2019,50(1):202-208. MA Jiani, ZHANG Chao, LU Yahui, GAO Lulu, YUN Wenju, ZHU Deihai. Cultivated Land Quality Evaluation Based on Inversion of NPP Based on Longterm Sequence Remote Sensing Data[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(1):202-208.

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  • 收稿日期:2018-07-20
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  • 在線發(fā)布日期: 2019-01-10
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