我在故宫修文物

After the desert turns green, harder work begins_我的网站

一 | 据外国媒体报道，索尼在今天的圣地亚哥发布会上宣布了两个主要的固件更新，分别是A9和A7R III和A7III。

Shi Jianyang (L) and his grandfather check the growth of crops on a farmland near a forest area along the Maowusu Desert in northwest China's Shaanxi Province in 2026.(Xinhua)A drone sweeps above the pine forest, sending images of the woods to a screen below. Under the trees stands Shi Jianyang whose grandfather and hundreds of villagers came 40 years ago with shovels and saplings to stop advancing sand.
At 29, Shi belongs to a new generation of desert-control workers equipped with drones, machines and remote irrigation systems. An earth auger can now do in a day what once required about 200 laborers, while a single phone can control drip irrigation across more than 1,000 mu (about 66.67 hectares) of woodland.
For the older Shi's generation, the challenge was getting trees to survive in moving dunes. For the grandson, it is figuring out how to make those forests healthier and more resilient for decades to come.
Their story captures a broader shift in desert control along the southern edge of the Maowusu Desert in northwest China's Shaanxi Province: turning shifting sand into forest was only the beginning.
In 1986, Shi Guangyin, Shi Jianyang's grandfather, led more than 300 villagers into Langwosha, a sandy area in Dingbian County in Yulin City. He had raised 60,000 yuan (about 17,377 U.S. dollars at the time) by selling his family's 84 sheep and borrowing from relatives and banks to contract 3,500 mu of barren sandy land.
The early setbacks were severe. Strong winds destroyed about 90 percent of the saplings in the first year, and about 80 percent of those planted the following year failed to survive.
After seeking advice from forestry experts, Shi and the villagers laid out checkerboard-shaped barriers on windward slopes to hold the sand in place, then planted trees, shrubs and grasses within them. Sapling survival rates rose to about 80 percent.
Over the next four decades, Shi and those working alongside him treated 250,000 mu of sandy and saline-alkali land, with more than 53 million trees and shrubs taking root.
Greening the Maowusu Desert is part of a much larger national undertaking. It is one of the three major battlefronts of China's Three-North Shelterbelt Forest Program, a decades-long effort to curb desertification across northern China.
China has made desertification control a national ecological priority. Since 2023, the country has stepped up efforts under the program, with greater emphasis on systematic restoration and on consolidating earlier gains.
Decades after the first trees took root, a new challenge emerged. Poplars planted decades ago for their rapid growth began reaching the end of their life cycle, with large numbers of trees dying, while forests dominated by a single species were more vulnerable to pests and disease.
Making a forest was one challenge. Keeping it healthy for another generation is another.
Shi Jianyang grew up watching his grandfather and father work to hold back the sand. His father, Shi Zhanjun, spent years planting trees alongside Shi Guangyin before dying in a road accident in 2008 while transporting saplings.
As a boy, Shi Jianyang sometimes resented the work that had taken his father. He spent summer holidays in makeshift tents in the sandy land, eating meals gritty with sand. During planting season, his father would return home with painful blisters in his mouth.
Yet he eventually chose forestry himself.
After studying forestry technology in university, Shi returned home in 2020 and began working in desert control. His team, initially made up of just seven or eight young locals, later brought in university graduates with expertise in soil science, landscaping and pest control.
The younger generation faced a different question: not simply how to make trees survive, but how to make a forest last.
Shi and his team spent more than 40 days in a 5,000-mu woodland setting up sample plots, measuring rainfall, studying soil microorganisms and tracking tree lodging. They proposed renewing aging forests with better-planned forest structures and expanded the planting of Mongolian pine, a long-lived evergreen species that had been successfully tested locally.
To date, about 50,000 mu of land has been planted with Mongolian pine. As some trees fail to survive and require replacement in subsequent planting seasons, the cumulative area of planting operations has reached about 65,000 mu.
Technology has also changed daily work. Drones patrol forests from the air, mechanized equipment dig planting pits, and irrigation can be managed remotely. Sapling survival rates, which Shi Guangyin's generation had raised to about 80 percent through improved sand-control and planting methods, have climbed further to about 92 percent with greater mechanization and more precise management.
Shi said the changes can be felt on the ground. Strong sandstorms have become rare, winds are weaker inside the forest, and the ground stays moist longer after rain. Summer days beneath the trees also feel cooler, while morning dew appears more often. The changes lead him to rethink desert control.
His approach also reflects a broader effort in China's desert regions to link ecological restoration with local livelihoods, giving communities a stronger economic stake in protecting restored land.
With his grandfather's support, Shi and his team have been looking for ways to make better use of the restored land as ecological conditions improve. They have developed potato seedlings suited to sandy soil, promoted greenhouse farming, and set up a livestock cooperative, while increasingly growing potatoes, watermelons and peppers on land once prone to losing water and nutrients.
Shi has also turned to livestreaming e-commerce to market potatoes and other local farm produce, while developing forest-based health and leisure projects. More than 2,000 local residents have seen their incomes rise steadily as farming, livestock breeding and other businesses have developed.
"We used to fear the sand and keep away from it. Now we understand it and know how to make use of it," Shi Guangyin said. "Today, there are opportunities to make a living everywhere in this sandy land."
Across Yulin, forest coverage has risen from 1.8 percent in 1949 to 34.8 percent, while shifting dunes that once encroached on villages have been brought under control.
For Shi Jianyang, however, the green landscape is not proof that the work is finished. "Planting a tree is not difficult," he said. "The difficult part is looking after it for decades."
The grandfather generation learned how to stop the sand. The young generation is learning how to make what grew there last.
Shi Jianyang (R) and his grandfather check tree growth in a forest area in Dingbian County in Yulin City, northwest China's Shaanxi Province in 2026. (Xinhua)

Shi Jianyang (R) and his grandfather check tree growth in a forest area in Dingbian County in Yulin City, northwest China's Shaanxi Province in 2026. (Xinhua)
。A9增加了一系列功能，包括改进静态和视频中的跟踪和聚焦，以及将眼睛AF扩展到动物身上。A7R III和A7 III还将提供改进的跟踪和动物眼睛功能，以及延迟功能。

二 | A9固件将有两个版本：版本5.0将在3月发布，版本6.0将在夏季发布。固件版本3.0的A7 III和A7R III将在4月提供。A9更新集中于自动对焦和可用性改进。但遗憾的是，更不用说在A9视频中添加日志记录了，因为它的阅读速度如此之快，卷动快门也最小。固件版本5.0将引入一种新的“实时跟踪模式”，它使用索尼最新的主题识别算法。更新后的“实时跟踪”模式为以前使用的颜色、距离和面部检测增加了眼睛检测和模式识别优先级。实时眼部运动自动对焦模式允许您在不按第二个按钮的情况下对焦眼睛，并允许您提前指定您希望相机对焦的眼睛（左、右或最近）。跟踪模式允许您指定一个主题，该主题将优先考虑他们的眼睛，切换到人脸检测，如果丢失了他们，并将他们作为一般主题来跟踪他们是否关闭他们的头相机。现在眼睛的自动对焦功能已经扩展到了识别动物的眼睛，索尼说它将帮助野生动物摄影师拍摄他们自己的照片。聚焦眼睛首先意味着摄影师可以专注于构图而不是专注。索尼已经证明这种模式是基于人工智能的，但外国媒体认为它是基于机器学习的（训练算法通过显示大量图像来识别主题）。