Given the following article, write a summary of the key ideas.

This is the article:
Despite the city’s support, the number of farms in Tokyo has been slowly declining for years, by nearly 14.5 percent between 2005 and 2015. Over the same period, the average age of Tokyo’s farmers increased by 3.3 years, to nearly 64. Today, Ryoto Matsuzawa says there are 1,250 farms left, most of which are under one hectare in size. “We want to preserve those at all costs.”

The city recently made a crucial decision to do so. Eighty percent of the farms protected under the Law on Productive Green Areas were registered the year that law was enacted, in 1992. The law stipulates that after 30 years, the landowners can ask the city to buy their land at market price. But most cities, strapped for cash, can’t afford to. If they don’t, the land loses its tax subsidy and can be sold for commercial development.

In other words, about 80 percent of the farms protected under the law were eligible to come up for sale in 2022. “These areas are nearly 45 percent of the agricultural land in Tokyo,” says Ryoto Matsuzawa.
system
nimnlikhit lekh ko dekhte hue, pramukh vichaaron kaa saransh likhen.

yah lekh he:
shahar ke samarthan ke baavjood, tokyo main kheton kii sankhya dhire -dhire varshon se ghat rahi he, 2005 or 2015 ke bich lagbhag 14.5 pratishat tak. isi avadhi main, tokyo ke kisaanon kii ausat aayu 3.3 varsh main bad gai, lagbhag 64 ho gai.matsujava kaa kahana he ki 1,250 khet bache hai, jinamein se adhikansh ek hectare aakaar main hai."ham har keemat par un logon ko sangrakshit karnaa chaahate hai."

shahar ne haal hi main aisa karne ke liye ek mahatvapurn nirnay liya.utpaadak hare kshetron par kanoon ke tahat sangrakshit kheton main se assi pratishat kheton ko us varsh panjikrut kiya gaya tha jab kanoon lagu kiya gaya tha, 1992 main. kanoon yah nirdhaarit karata he ki 30 saal baad, bhuswami shahar ko bazaar mulya par apni jameen kharidne ke liye kah sakate hai.lekin zyaadaatar shahar, nakadi ke liye bandhe hue, ko bardaasht nahin kar sakate.yadi ve nahin karte hai, to bhoomi apni kar sabsidi kho detii he or vanijyik vikaas ke liye bechi ja sakati he.

duusare shabdon main, kanoon ke tahat sangrakshit lagbhag 80 pratishat kheton main 2022 main bikri ke liye aane ke liye paatr the. "ye kshetra tokyo main krishi bhoomi ke lagbhag 45 pratishat hai," rayato matsujava kehete hai.
user
2005 or 2015 ke bich, tokyo main kheton kii sankhya main 14.5 pratishat kii kami ai or kisaanon kii ausat aayu main 3.3 varsh main vruddhi hui.tokyo ke shesh 1,250 chote kheton ko sangrakshit karnaa kai logon ke liye anmol lagata he, lekin ek jari mudda he, jahaan kai shahar bazaar mulya par utpaadak hare kshetron ke kanoon ke tahat sangrakshit bhoomi ko kharidne kaa jokhim nahin uthaa sakate hai, jaisaa ki kanoonee rup se aavashyak he.yah krishi upyog ke liye khoi ja rahi bhoomi kii ore jaataa he, or aamtaur par vanijyik vikaas ke liye bechaa jaataa he.
assistant
<|system|>
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<|user|>
nimnlikhit lekh ko dekhte hue, pramukh vichaaron kaa saransh likhen.

yah lekh he:
shahar ke samarthan ke baavjood, tokyo main kheton kii sankhya dhire -dhire varshon se ghat rahi he, 2005 or 2015 ke bich lagbhag 14.5 pratishat tak. isi avadhi main, tokyo ke kisaanon kii ausat aayu 3.3 varsh main bad gai, lagbhag 64 ho gai.matsujava kaa kahana he ki 1,250 khet bache hai, jinamein se adhikansh ek hectare aakaar main hai."ham har keemat par un logon ko sangrakshit karnaa chaahate hai."

shahar ne haal hi main aisa karne ke liye ek mahatvapurn nirnay liya.utpaadak hare kshetron par kanoon ke tahat sangrakshit kheton main se assi pratishat kheton ko us varsh panjikrut kiya gaya tha jab kanoon lagu kiya gaya tha, 1992 main. kanoon yah nirdhaarit karata he ki 30 saal baad, bhuswami shahar ko bazaar mulya par apni jameen kharidne ke liye kah sakate hai.lekin zyaadaatar shahar, nakadi ke liye bandhe hue, ko bardaasht nahin kar sakate.yadi ve nahin karte hai, to bhoomi apni kar sabsidi kho detii he or vanijyik vikaas ke liye bechi ja sakati he.

duusare shabdon main, kanoon ke tahat sangrakshit lagbhag 80 pratishat kheton main 2022 main bikri ke liye aane ke liye paatr the. "ye kshetra tokyo main krishi bhoomi ke lagbhag 45 pratishat hai," rayato matsujava kehete hai.</s>
<|assistant|>
2005 or 2015 ke bich, tokyo main kheton kii sankhya main 14.5 pratishat kii kami ai or kisaanon kii ausat aayu main 3.3 varsh main vruddhi hui.tokyo ke shesh 1,250 chote kheton ko sangrakshit karnaa kai logon ke liye anmol lagata he, lekin ek jari mudda he, jahaan kai shahar bazaar mulya par utpaadak hare kshetron ke kanoon ke tahat sangrakshit bhoomi ko kharidne kaa jokhim nahin uthaa sakate hai, jaisaa ki kanoonee rup se aavashyak he.yah krishi upyog ke liye khoi ja rahi bhoomi kii ore jaataa he, or aamtaur par vanijyik vikaas ke liye bechaa jaataa he.</s>
